Prof. Dr.-Ing. Matthias Gräser

2023 [ to top ]

• Aderhold, E., Schumacher, J., Stagge, P., Ahlborg, M., Buzug, T. M. and Graeser, M.: Towards a Fully Integrated Preclinical Field-Free Line MPI Scanner, In: International Journal on Magnetic Particle Imaging IJMPI, 2023.
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  @inproceedings{aderhold2023towards, author = {Aderhold, Eric and Schumacher, Jonas and Stagge, Pascal and Ahlborg, Mandy and Buzug, Thorsten M. and Graeser, Matthias}, booktitle = {International Journal on Magnetic Particle Imaging IJMPI}, keywords = {aderholderic ahlborgmandy buzugthorsten graesermatthias imt mpi schumacherjonas staggepascal}, number = {1 Suppl 1}, title = {Towards a Fully Integrated Preclinical Field-Free Line MPI Scanner}, volume = 9, year = 2023 }
• Hackelberg, N., Schumacher, J., Ackers, J., Möddel, M., Förger, F., Graeser, M. and Knopp, T.: MPIMeasurements.jl: An Extensible Julia Framework for Composable Magnetic Particle Imaging Devices, International Journal on Magnetic Particle Imaging IJMPI, Vol 9 No 1 Suppl 1 (2023), 2023, DOI: 10.18416/IJMPI.2023.2303069.
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  @article{https://doi.org/10.18416/ijmpi.2023.2303069, author = {Hackelberg, Niklas and Schumacher, Jonas and Ackers, Justin and Möddel, Martin and Förger, Fynn and Graeser, Matthias and Knopp, Tobias}, journal = {International Journal on Magnetic Particle Imaging IJMPI}, keywords = {ackersjustin graesermatthias imt mpi schumacherjonas}, pages = {Vol 9 No 1 Suppl 1 (2023)}, publisher = {International Journal on Magnetic Particle Imaging IJMPI}, title = {MPIMeasurements.jl: An Extensible Julia Framework for Composable Magnetic Particle Imaging Devices}, year = 2023 }
• Niebel, F., Schumacher, J., Mohn, F., Ahlborg, M., Buzug, T. M. and Graeser, M.: A Novel Approach to FFL Trajectory Analysis, International Journal on Magnetic Particle Imaging IJMPI, Vol 9 No 1 Suppl 1 (2023), 2023, DOI: 10.18416/IJMPI.2023.2303074.
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  @article{https://doi.org/10.18416/ijmpi.2023.2303074, author = {Niebel, Frauke and Schumacher, Jonas and Mohn, Fabian and Ahlborg, Mandy and Buzug, Thorsten M. and Graeser, Matthias}, journal = {International Journal on Magnetic Particle Imaging IJMPI}, keywords = {ahlborgmandy buzugthorsten graesermatthias imt mpi niebelfrauke schumacherjonas}, pages = {Vol 9 No 1 Suppl 1 (2023)}, publisher = {International Journal on Magnetic Particle Imaging IJMPI}, title = {A Novel Approach to FFL Trajectory Analysis}, year = 2023 }

2022 [ to top ]

• Hackelberg, N., Schumacher, J., Graeser, M. and Knopp, T.: A Flexible High-Performance Signal Generation and Digitization Plattform based on Low-Cost Hardware, International Journal on Magnetic Particle Imaging, Vol 8 No 1 Suppl 1 (2022), 2022, DOI: 10.18416/IJMPI.2022.2203063.
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  @article{https://doi.org/10.18416/ijmpi.2022.2203063, author = {Hackelberg, Niklas and Schumacher, Jonas and Graeser, Matthias and Knopp, Tobias}, journal = {International Journal on Magnetic Particle Imaging}, keywords = {graesermatthias imt mpi schumacherjonas}, pages = {Vol 8 No 1 Suppl 1 (2022)}, publisher = {International Journal on Magnetic Particle Imaging}, title = {A Flexible High-Performance Signal Generation and Digitization Plattform based on Low-Cost Hardware}, year = 2022 }
• Blancke Soares, Y., Gräser, M., Ackers, J., Bakenecker, A., Friedrich, T., Schumacher, J., Lüdtke Buzug, K., Blümler, P. and Buzug, T.: High gradient nested Halbach system for steering magnetic particles, International Journal on Magnetic Particle Imaging, Vol 8 No 1 Suppl 1 (2022), 2022, DOI: 10.18416/IJMPI.2022.2203012.
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  @article{https://doi.org/10.18416/ijmpi.2022.2203012, author = {Blancke Soares, Yvonne and Gräser, Matthias and Ackers, Justin and Bakenecker, Anna and Friedrich, Thomas and Schumacher, Jonas and Lüdtke Buzug, Kerstin and Blümler, Peter and Buzug, Thorsten}, journal = {International Journal on Magnetic Particle Imaging}, keywords = {ackersjustin bakeneckeranna buzugthorsten friedrichthomas graesermatthias imt luedtkekerstin mpi schumacherjonas soaresyvonne}, pages = {Vol 8 No 1 Suppl 1 (2022)}, publisher = {International Journal on Magnetic Particle Imaging}, title = {High gradient nested Halbach system for steering magnetic particles}, year = 2022 }
• Gräser, M., Wegner, F., Schumacher, J., Ahlborg, M., Gräfe, K., Aderhold, E., Soares, Y. B., Lüdtke-Buzug, K., Neumann, A., Stagge, P., Wei, H., Ackers, J. and Buzug, T. M.: Magnetic particle imaging, Die Radiologie, 62(6), 496--503, 2022, DOI: 10.1007/s00117-022-01011-9.
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  @article{Gr_ser_2022, author = {Gräser, Matthias and Wegner, Franz and Schumacher, Jonas and Ahlborg, Mandy and Gräfe, Ksenija and Aderhold, Eric and Soares, Yvonne Blancke and Lüdtke-Buzug, Kerstin and Neumann, Alexander and Stagge, Pascal and Wei, Huimin and Ackers, Justin and Buzug, Thorsten M.}, journal = {Die Radiologie}, keywords = {ackersjustin aderholderic ahlborgmandy buzugthorsten graefeksenija graesermatthias imt luedtkekerstin mpi neumannalexander schumacherjonas soaresyvonne staggepascal weihuimin}, month = {may}, number = 6, pages = {496--503}, publisher = {Springer Science and Business Media {LLC}}, title = {Magnetic particle imaging}, volume = 62, year = 2022 }
• Schumacher, J., Ahlborg, M., Aderhold, E., Stagge, P., Buzug, T. M. and Gräser, M.: Comparison of Reconstruction Methods for Measured FFL Data, In: International Workshop on Magnetic Particle Imaging, 2022, DOI: 10.18416/IJMPI.2022.2203061.
  [ BibTeX ] [ URL ]
   
  @inproceedings{https://doi.org/10.18416/ijmpi.2022.2203061, author = {Schumacher, Jonas and Ahlborg, Mandy and Aderhold, Eric and Stagge, Pascal and Buzug, Thorsten M. and Gräser, Matthias}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {MPITheo aderholderic ahlborgimt buzugthorsten graesermatthias imt mandy mpi schumacherjonas staggepascal}, number = {1 Suppl 1}, publisher = {International Journal on Magnetic Particle Imaging}, title = {Comparison of Reconstruction Methods for Measured FFL Data}, volume = 8, year = 2022 }

2020 [ to top ]

• von Gladiss, A., Graeser, M., Behrends, A., Chen, X. and Buzug, T. M.: Efficient hybrid 3D system calibration for magnetic particle imaging systems using a dedicated device, Scientific Reports, 10(1), 2020, DOI: 10.1038/s41598-020-75122-5.
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  @article{VonGladiss2020a, author = {von Gladiss, Anselm and Graeser, Matthias and Behrends, Andr{{é}} and Chen, Xin and Buzug, Thorsten M.}, journal = {Scientific Reports}, keywords = {behrendsandre buzugthorsten chenxin gladissanselm graesermatthias imt mpi mps}, month = {oct}, number = 1, publisher = {Springer Science and Business Media {LLC}}, title = {Efficient hybrid 3D system calibration for magnetic particle imaging systems using a dedicated device}, volume = 10, year = 2020 }
• Von Gladiss, A., Graeser, M., Cordes, A., Bakenecker, A. C., Behrends, A., Chen, X. and Buzug, T. M.: Investigating Spatial Resolution, Field Sequences and Image Reconstruction Strategies using Hybrid Phantoms in MPI, International Journal on Magnetic Particle Imaging, 6(1), 2020, DOI: 10.18416/IJMPI.2020.2003004.
  [ BibTeX ] [ URL ]
   
  @article{vonGladiss2020IJMPI, author = {Von Gladiss, Anselm and Graeser, Matthias and Cordes, Aileen and Bakenecker, Anna C. and Behrends, André and Chen, Xin and Buzug, Thorsten M.}, journal = {International Journal on Magnetic Particle Imaging}, keywords = {bakeneckeranna behrendsandre buzugthorsten chenxin cordesaileen gladissanselm graesermatthias imt mpi}, number = 1, publisher = {International Journal on Magnetic Particle Imaging}, title = {Investigating Spatial Resolution, Field Sequences and Image Reconstruction Strategies using Hybrid Phantoms in MPI}, volume = 6, year = 2020 }

2019 [ to top ]

• Beuke, J., Buzug, T., Friedrich, T., Rostalski, P. and Gräser, M.: Verfahren zur Magnetpartikelbildgebung mit verbesserter Messdynamik, German Patent, 2019, DE 10 2018 204 311 B3.
  [ BibTeX ]
   
  @patent{beuke2019verfahren, annote = {DE 10 2018 204 311 B3}, author = {Beuke, Jonas and Buzug, Thorsten and Friedrich, Thomas and Rostalski, Philipp and Gräser, Matthias}, keywords = {beukejonas buzugthorsten friedrichthomas graesermatthias imt mpi schumacherjonas}, month = {may}, note = {German}, title = {Verfahren zur Magnetpartikelbildgebung mit verbesserter Messdynamik}, year = 2019 }

2018 [ to top ]

• Graeser, M., Szwargulski, P., Friedrich, T., von Gladiss, A., Kaul, M., Krishnan, K. M., Ittrich, H., Adam, G., Buzug, T. M. and Knopp, T.: On the Determination of the Sensitivity in Magnetic Particle Imaging, In: International Workshop on Magnetic Particle Imaging, 69-70, 2018.
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  @inproceedings{graeser2018determination, author = {Graeser, Matthias and Szwargulski, Patryk and Friedrich, Thomas and von Gladiss, Anselm and Kaul, Michael and Krishnan, Kannan M. and Ittrich, Harald and Adam, Gerhard and Buzug, Thorsten M. and Knopp, Tobias}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {buzugthorsten friedrichthomas gladissanselm graesermatthias imt mpi}, pages = {69-70}, title = {On the Determination of the Sensitivity in Magnetic Particle Imaging}, year = 2018 }
• von Gladiss, A., Graeser, M. and Buzug, T. M.: Influence of Excitation Signal Coupling on Reconstructed Images in Magnetic Particle Imaging, In: Bildverarbeitung für die Medizin 2018. Informatik aktuell, Springer Vieweg, , 92-97, 2018, DOI: 10.1007/978-3-662-56537-7_36.
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  @inbook{vongladiss2018influence, author = {von Gladiss, Anselm and Graeser, Matthias and Buzug, Thorsten M.}, editor = {Maier, Andreas K. and Deserno, Thomas M. and Handels, Heinz and Maier-Hein, Klaus Hermann and Palm, Christoph and Tolxdorff, Thomas}, journal = {Bildverarbeitung für die Medizin 2018. Informatik aktuell}, keywords = {buzugthorsten gladissanselm graesermatthias imt mpi mps}, pages = {92-97}, publisher = {Springer Vieweg}, title = {Influence of Excitation Signal Coupling on Reconstructed Images in Magnetic Particle Imaging}, year = 2018 }
• von Gladiss, A., Graeser, M. and Buzug, T. M.: Influence of Excitation Signal Coupling on Reconstructed Images in MPI, In: International Workshop on Magnetic Particle Imaging, 47-48, 2018.
  [ BibTeX ]
   
  @inproceedings{vongladiss2018influence, author = {von Gladiss, Anselm and Graeser, Matthias and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {buzugthorsten gladissanselm graesermatthias imt mpi mps}, pages = {47-48}, title = {Influence of Excitation Signal Coupling on Reconstructed Images in MPI}, year = 2018 }
• Beuke, J., Friedrich, T., Graeser, M., Buzug, T. M. and Rostalski, P.: An Approach for Actively Cancelling Direct Feedthrough, In: 8th International Workshop on Magnetic Particle Imaging, 77, 2018.
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  @inproceedings{beuke2018active, author = {Beuke, Jonas and Friedrich, Thomas and Graeser, Matthias and Buzug, Thorsten M. and Rostalski, Philipp}, booktitle = {8th International Workshop on Magnetic Particle Imaging}, keywords = {BeukeJonas BuzugThorsten FriedrichThomas GraeserMatthias IMT MPI SchumacherJonas}, pages = 77, title = {An Approach for Actively Cancelling Direct Feedthrough}, year = 2018 }
• von Gladiss, A., Graeser, M. and Buzug, T. M.: Increasing the MPI Frame Rate by Excitation Signal Phase-Shifting and Receive-Signal-Splitting, In: International Workshop on Magnetic Particle Imaging, 215-216, 2018.
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  @inproceedings{vongladiss2018increasing, author = {von Gladiss, Anselm and Graeser, Matthias and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {buzugthorsten gladissanselm graesermatthias mpi}, pages = {215-216}, title = {Increasing the MPI Frame Rate by Excitation Signal Phase-Shifting and Receive-Signal-Splitting}, year = 2018 }
• Chen, X., Graeser, M., Behrends, A., von Gladiss, A. and Buzug, T. M.: First Measurement and SNR Results of a 3D Magnetic Particle Spectrometer, International Journal on Magnetic Particle Imaging, 4(1), 2018, DOI: 10.18416/IJMPI.2018.1810001.
  [ BibTeX ]
   
  @article{chen2018first, author = {Chen, Xin and Graeser, Matthias and Behrends, André and von Gladiss, Anselm and Buzug, Thorsten M.}, journal = {International Journal on Magnetic Particle Imaging}, keywords = {BehrendsAndre ChenXin GladissAnselm GraeserMatthias MPI SAMBA buzugthorsten imt mps}, number = 1, title = {First Measurement and SNR Results of a 3D Magnetic Particle Spectrometer}, volume = 4, year = 2018 }

2017 [ to top ]

• von Gladiss, A., Graeser, M., Szwargulski, P., Knopp, T. and Buzug, T. M.: Hybrid System Calibration for Multidimensional Magnetic Particle Imaging, Physics in Medicine and Biology, 62(9), 3392-3406, 2017, DOI: 10.1088/1361-6560/aa5340.
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  @article{vongladiss2017hybrid, author = {von Gladiss, Anselm and Graeser, Matthias and Szwargulski, Patryk and Knopp, Tobias and Buzug, Thorsten M.}, journal = {Physics in Medicine and Biology}, keywords = {BuzugThorsten GladissAnselm GraeserMatthias MPI MPITheo MPS imt}, number = 9, pages = {3392-3406}, title = {Hybrid System Calibration for Multidimensional Magnetic Particle Imaging}, volume = 62, year = 2017 }
• Graeser, M., von Gladiss, A., Weber, M. and Buzug, T. M.: Two dimensional magnetic particle spectrometry, Physics in Medicine and Biology, 62(9), 3378-3391, 2017, DOI: 10.1088/1361-6560/aa5bcd.
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  @article{graeser2017dimensional, author = {Graeser, Matthias and von Gladiss, Anselm and Weber, Matthias and Buzug, Thorsten M.}, journal = {Physics in Medicine and Biology}, keywords = {BuzugThorsten GladissAnselm GraeserMatthias MPI MPS WeberMatthias imt}, number = 9, pages = {3378-3391}, title = {Two dimensional magnetic particle spectrometry}, volume = 62, year = 2017 }
• Bakenecker, A., Friedrich, T., von Gladiss, A., Graeser, M., Stelzner, J. and Buzug, T. M.: Experimental Validation of the Selection Field of a Rabbit-Sized FFL Scanner, International Journal on Magnetic Particle Imaging, 3(1), 2017, DOI: 10.18416/IJMPI.2017.1703013.
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  @article{bakenecker2017experimental, author = {Bakenecker, Anna and Friedrich, Thomas and von Gladiss, Anselm and Graeser, Matthias and Stelzner, Jan and Buzug, Thorsten M.}, journal = {International Journal on Magnetic Particle Imaging}, keywords = {BakeneckerAnna BuzugThorsten FriedrichThomas GladissAnselm GraeserMatthias MPI StelznerJan imt mapit}, number = 1, publisher = {Infinite Science Publishing}, title = {Experimental Validation of the Selection Field of a Rabbit-Sized FFL Scanner}, volume = 3, year = 2017 }
• Stelzner, J., Graeser, M., Bakenecker, A., von Gladiss, A., Bringout, G. and Buzug, T. M.: Measurements Inside a Rabbit Sized FFL-MPI Device Using a Gradiometric Receive Coil, International Journal on Magnetic Particle Imaging, 3(1), 2017, DOI: 10.18416/IJMPI.2017.1703012.
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  @article{stelzner2017measurements, author = {Stelzner, Jan and Graeser, Matthias and Bakenecker, Anna and von Gladiss, Anselm and Bringout, Gael and Buzug, Thorsten M.}, journal = {International Journal on Magnetic Particle Imaging}, keywords = {BakeneckerAnna BringoutGael BuzugThorsten GladissAnselm GraeserMatthias MAPIT MPI StelznerJan imt}, number = 1, publisher = {Infinite Science Publishing}, title = {Measurements Inside a Rabbit Sized FFL-MPI Device Using a Gradiometric Receive Coil}, volume = 3, year = 2017 }
• Graeser, M., von Gladiss, A., Friedrich, T. and Buzug, T. M.: SNR and Discretization Enhancement for System Matrix Determination by Decreasing the Gradient in Magnetic Particle Imaging, International Journal on Magnetic Particle Imaging, 3(1), 2017, DOI: 10.18416/IJMPI.2017.1703019.
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  @article{graeser2017discretization, author = {Graeser, Matthias and von Gladiss, Anselm and Friedrich, Thomas and Buzug, Thorsten M.}, journal = {International Journal on Magnetic Particle Imaging}, keywords = {BuzugThorsten FriedrichThomas GladissAnselm GraeserMatthias MPI imt}, number = 1, publisher = {Infinite Science Publishing}, title = {SNR and Discretization Enhancement for System Matrix Determination by Decreasing the Gradient in Magnetic Particle Imaging}, volume = 3, year = 2017 }
• Chen, X., Graeser, M., Behrends, A., von Gladiss, A. and Buzug, T. M.: First measured result of the 3D Magnetic Particle Spectrometer, In: International Workshop on Magnetic Particle Imaging, 123, 2017.
  [ BibTeX ]
   
  @inproceedings{chen2017first, abstract = {Magnetic Particle Imaging (MPI) is capable of imaging the spatial distribution of superparamagnetic iron oxide (SPIO) nanoparticles with a high sensitivity and high resolution. A Magnetic Particle Spectrometer (MPS) can be used to estimate the magnetic response of the SPIO nanoparticles and achieve the system matrix for the calibration of imaging devices. A one-dimensional and two-dimensional MPS have been introduced and shown good usability. A three-dimensional transmit coil setup was optimized, and its corresponding signal chains have been partially described. This paper is a continuation work and aims at presenting the first measured results of the three-dimensional MPS.}, author = {Chen, Xin and Graeser, Matthias and Behrends, André and von Gladiss, Anselm and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, editor = {Sefc, Ludek and Buzug, Thorsten M. and Knopp, Tobias}, keywords = {BehrendsAndre BuzugThorsten ChenXin GladissAnselm GraeserMatthias IMT MPI MPS SAMBA}, month = {March}, pages = 123, publisher = {Infinite Science Publishing}, title = {First measured result of the 3D Magnetic Particle Spectrometer}, year = 2017 }
• Graeser, M., von Gladiss, A., Friedrich, T. and Buzug, T. M.: SNR and Discretization Enhancement for System Matrix Determination by Decreasing the Gradient in Magnetic Particle Imaging, In: International Workshop on Magnetic Particle Imaging, 79, 2017.
  [ BibTeX ]
   
  @inproceedings{graeser2017discretization, author = {Graeser, Matthias and von Gladiss, Anselm and Friedrich, Thomas and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {BuzugThorsten FriedrichThomas GladissAnselm GraeserMatthias MPI imt}, pages = 79, title = {SNR and Discretization Enhancement for System Matrix Determination by Decreasing the Gradient in Magnetic Particle Imaging}, year = 2017 }
• von Gladiss, A., Graeser, M. and Buzug, T. M.: Applying Compressed Sensing on Hybrid System Matrices in Magnetic Particle Imaging, In: International Workshop on Magnetic Particle Imaging, 81, 2017.
  [ BibTeX ]
   
  @inproceedings{vongladiss2017applying, author = {von Gladiss, Anselm and Graeser, Matthias and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {BuzugThorsten GladissAnselm GraeserMatthias MPI MPITheo MPS imt}, pages = 81, title = {Applying Compressed Sensing on Hybrid System Matrices in Magnetic Particle Imaging}, year = 2017 }
• Bakenecker, A., Friedrich, T., von Gladiss, A., Graeser, M., Stelzner, J. and Buzug, T. M.: Experimental Validation of the Selection Field of a Rabbit Sized FFL Scanner, In: International Workshop on Magnetic Particle Imaging, 41, 2017.
  [ BibTeX ]
   
  @inproceedings{bakenecker2017experimental, author = {Bakenecker, Anna and Friedrich, Thomas and von Gladiss, Anselm and Graeser, Matthias and Stelzner, Jan and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {BakeneckerAnna BuzugThorsten FriedrichThomas GladissAnselm GraeserMatthias MAPIT MPI StelznerJan imt}, pages = 41, title = {Experimental Validation of the Selection Field of a Rabbit Sized FFL Scanner}, year = 2017 }
• Graeser, M., Knopp, T., Szwargulski, P., Friedrich, T., von Gladiss, A., Kaul, M., Krishnan, K. M., Ittrich, H., Adam, G. and Buzug, T. M.: Towards Picogram Detection of Superparamagnetic Iron-Oxide Particles Using a Gradiometric Receive Coil, Scientific Reports, 7(6872), 2017, DOI: 10.1038/s41598-017-06992-5.
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  @article{graeser2017towards, abstract = {Superparamagnetic iron-oxide nanoparticles can be used in medical applications like vascular or targeted imaging. Magnetic particle imaging (MPI) is a promising tomographic imaging technique that allows visualizing the 3D nanoparticle distribution concentration in a non-invasive manner. The two main strengths of MPI are high temporal resolution and high sensitivity. While the first has been proven in the assessment of dynamic processes like cardiac imaging, it is unknown how far the detection limit of MPI can be lowered. Within this work, we will present a highly sensitive gradiometric receive-coil unit combined with a noise-matching network tailored for the imaging of mice. The setup is capable of detecting 5 ng of iron in-vitro with an acquisition time of 2.14 sec. In terms of iron concentration we are able to detect 156 μg/L marking the lowest value that has been reported for an MPI scanner so far. In-vivo MPI mouse images of a 512 ng bolus and a 21.5 ms acquisition time allow for capturing the flow of an intravenously injected tracer through the heart of a mouse. Since it has been rather difficult to compare detection limits across MPI publications we propose guidelines to improve the comparability of future MPI studies.}, author = {Graeser, Matthias and Knopp, Tobias and Szwargulski, Patryk and Friedrich, Thomas and von Gladiss, Anselm and Kaul, Michael and Krishnan, Kannan M. and Ittrich, Harald and Adam, Gerhard and Buzug, Thorsten M.}, journal = {Scientific Reports}, keywords = {buzugthorsten friedrichthomas gladissanselm graesermatthias imt mpi}, number = 6872, title = {Towards Picogram Detection of Superparamagnetic Iron-Oxide Particles Using a Gradiometric Receive Coil}, volume = 7, year = 2017 }

2016 [ to top ]

• Weber, M., Bente, K., Bruns, S., von Gladiss, A., Graeser, M. and Buzug, T. M.: A 1.4T/m Field Free Line Magnetic Particle Imaging Device, In: International Workshop on Magnetic Particle Imaging, 142, 2016.
  [ BibTeX ]
   
  @inproceedings{weber2016field, author = {Weber, Matthias and Bente, Klaas and Bruns, Steffen and von Gladiss, Anselm and Graeser, Matthias and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {benteklaas brunssteffen buzugthorsten gladissanselm graesermatthias imt mpi webermatthias}, pages = 142, title = {A 1.4T/m Field Free Line Magnetic Particle Imaging Device}, year = 2016 }
• Schmidt, D., Graeser, M., Gladiss, A. von, Buzug, T. M. and Steinhoff, U.: Imaging Characterization of MPI Tracers Employing Offset Measurements in a two Dimensional Magnetic Particle Spectrometer, International Journal on Magnetic Particle Imaging, 2(1), 2016.
  [ BibTeX ] [ URL ]
   
  @article{schmidt_imaging_2016, abstract = {We developed a method to characterize the imaging performance of {MPI} tracers from virtual {MPI} measurements that can be synthesized using measurement data from a Magnetic Particle Spectrometer ({MPS}) at different static magnetic field offsets. {MPI} system functions were obtained from measurements on a {FeraSpin}™ R ({nanoPET} {GmbH}, Berlin) sample in a 2D {MPS} comprising two excitation coils and two receive coils. Software phantoms of spatial {MPI} tracer distributions with different size and shape were constructed. With the measured {MPI} system function, a synthetic {MPI} measurement of the software phantoms was simulated. By adding noise to the virtual {MPI} data, the detection limit of each harmonic in dependence of the noise level was obtained. An {MPI} reconstruction of the virtual tracer distribution was performed using the virtual {MPI} data as input. By comparing the reconstructed images with the actual software phantoms, we obtained the spatial resolution of {MPI} of the investigated tracers. This method might help predicting the image resolution for real {MPI} setups. Our characterization method provides a valuable link between pure spectroscopic characterization and time consuming {MPI} phantom experiments.}, author = {Schmidt, Daniel and Graeser, Matthias and Gladiss, Anselm von and Buzug, Thorsten M. and Steinhoff, Uwe}, journal = {International Journal on Magnetic Particle Imaging}, keywords = {GladissAnselm GraeserMatthias MPS buzugthorsten imt mpi}, number = 1, title = {Imaging Characterization of {MPI} Tracers Employing Offset Measurements in a two Dimensional Magnetic Particle Spectrometer}, volume = 2, year = 2016 }
• Graeser, M., von Gladiss, A., Szwargulski, P., Ahlborg, M., Knopp, T. and Buzug, T. M.: Reconstruction of Experimental 2D MPI Data using a Hybrid System Matrix, In: International Workshop on Magnetic Particle Imaging, 130, 2016.
  [ BibTeX ]
   
  @inproceedings{GraeserIWMPI2016a, author = {Graeser, M. and von Gladiss, A. and Szwargulski, P. and Ahlborg, M. and Knopp, T. and Buzug, T. M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {AhlborgMandy GladissAnselm MPS buzugthorsten graesermatthias imt}, note = {inproceedings}, pages = 130, title = {Reconstruction of Experimental 2D MPI Data using a Hybrid System Matrix}, year = 2016 }
• Chen, X., Behrends, A., Graeser, M., Neumann, A. and Buzug, T. M.: Optimizing the Coil Setup for a Three-Dimensional Magnetic Particle Spectrometer, In: International Workshop on Magnetic Particle Imaging, 59, 2016.
  [ BibTeX ]
   
  @inproceedings{chen2016optimizing, author = {Chen, Xin and Behrends, André and Graeser, Matthias and Neumann, Alexander and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, editor = {Buzug, Thorsten M. and Borgert, Jörn and Knopp, Tobias}, keywords = {BehrendsAndre BuzugThorsten ChenXin GraeserMatthias IMT MPI MPS NeumannAlexander SAMBA}, month = {March}, pages = 59, publisher = {Infinite Science Publishing}, title = {Optimizing the Coil Setup for a Three-Dimensional Magnetic Particle Spectrometer}, year = 2016 }
• Schmidt, D., Graeser, M., von Gladiss, A., Buzug, T. M. and Steinhoff, U.: Imaging Characterization of MPI Tracers Employing Offset Measurements in a 2D Magnetic Particle Spectrometer, In: International Workshop on Magnetic Particle Imaging, 114, 2016.
  [ BibTeX ]
   
  @inproceedings{schmidttobepublishedimaging, author = {Schmidt, Daniel and Graeser, Matthias and von Gladiss, Anselm and Buzug, Thorsten M. and Steinhoff, Uwe}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {BuzugThorsten GladissAnselm GraeserMatthias IMT MPS}, pages = 114, title = {Imaging Characterization of MPI Tracers Employing Offset Measurements in a 2D Magnetic Particle Spectrometer}, year = 2016 }
• von Gladiss, A., Graeser, M., Ferguson, R. M., Khandhar, A. P., Kemp, S. J., Krishnan, K. M. and Buzug, T. M.: The Particle Response of Blended Nanoparticles in MPI, In: International Workshop on Magnetic Particle Imaging, 115, 2016.
  [ BibTeX ]
   
  @inproceedings{vongladisstobepublishedparticle, author = {von Gladiss, Anselm and Graeser, Matthias and Ferguson, R. Matthew and Khandhar, Amit P. and Kemp, Scott J. and Krishnan, Kannan M. and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {BuzugThorsten GladissAnselm GraeserMatthias IMT MPS ParticleTheory}, pages = 115, title = {The Particle Response of Blended Nanoparticles in MPI}, year = 2016 }
• Graeser, M., Bente, K., Neumann, A. and Buzug, T. M.: Trajectory dependent particle response for anisotropic mono domain particles in magnetic particle imaging, Journal of Physics D: Applied Physics, 49(4), 045007, 2016.
  [ BibTeX ] [ URL ]
   
  @article{0022-3727-49-4-045007, abstract = {In magnetic particle imaging, scanners use different spatial sampling techniques to cover the field of view (FOV). As spatial encoding is realized by a selective low field region (a field-free-point, or field-free-line), this region has to be moved through the FOV on specific sampling trajectories. To achieve these trajectories complex time dependent magnetic fields are necessary. Due to the superposition of the selection field and the homogeneous time dependent fields, particles at different spatial positions experience different field sequences. As a result, the dynamic behaviour of those particles can be strongly spatially dependent. So far, simulation studies that determined the trajectory quality have used the Langevin function to model the particle response. This however, neglects the dynamic relaxation of the particles, which is highly affected by magnetic anisotropy. More sophisticated models based on stochastic differential equations that include these effects were only used for one dimensional excitation. In this work, a model based on stochastic differential equations is applied to two-dimensional trajectory field sequences, and the effects of these field sequences on the particle response are investigated. The results show that the signal of anisotropic particles is not based on particle parameters such as size and shape alone, but is also determined by the field sequence that a particle ensemble experiences at its spatial position. It is concluded, that the particle parameters can be optimized in terms of the used trajectory.}, author = {Graeser, M. and Bente, K. and Neumann, A. and Buzug, T.M.}, journal = {Journal of Physics D: Applied Physics}, keywords = {BuzugThorsten GraeserMatthias IMT NeumannAlexander}, number = 4, pages = {045007}, title = {Trajectory dependent particle response for anisotropic mono domain particles in magnetic particle imaging}, volume = 49, year = 2016 }

2015 [ to top ]

• Weber, M., Bente, K., Graeser, M., Sattel, T. F. and Buzug, T. M.: Implementation of a High-Precision 2-D Receiving Coil Set for Magnetic Particle Imaging, IEEE Transactions on Magnetics, 51(2), 6502404, 2015, DOI: 10.1109/TMAG.2014.2331987.
  [ BibTeX ] [ URL ]
   
  @article{Weber2014b, abstract = {In the medical imaging technique magnetic particle imaging, tomographic images of the spatial distribution of superparamagnetic particles are produced in real time. To generate images in a plane, the particles are excited in two dimensions. A specific particle response can be measured via receiving coils and the measured signal gives quantitative information about the particle distribution and local concentration. To achieve a high-spatial resolution with x-space reconstruction, the receiving coils have to feature a preferably homogeneous sensitivity in the field of view. To achieve this for a cylindrical bore, which is the typical medical scenario, an optimized coil set is implemented and tested in this paper. Two orthogonal receiving coil pairs are wound inside a negative form, which is custom made by a 3-D printer. Further, a well performing receiving chain is utilized, which transmits the particle signal from the receiving coils to the data acquisition unit. For performance evaluation, a hardware phantom with three delta samples is used. A field free line is chosen as a selection field, for which the presented coils may be used in an application scenario. The receiving coils perform well in the sense that no coupling in between the data paths is apparent and the recorded signals clearly represent the used phantom.}, author = {Weber, M. and Bente, K. and Graeser, M. and Sattel, T. F. and Buzug, T. M.}, journal = {IEEE Transactions on Magnetics}, keywords = {BuzugThorsten GraeserMatthias IMT LUMEN WeberMatthias}, month = {feb}, number = 2, pages = 6502404, title = {Implementation of a High-Precision 2-D Receiving Coil Set for Magnetic Particle Imaging}, volume = 51, year = 2015 }
• Graeser, M., Bente, K., Neumann, A. and Buzug, T. M.: Trajectory Dependent Particle Response for Anisotropic Mono Domain Particles in Magnetic Particle Imaging, Journal of Physics D: Applied Physics, 49(4), 2015, DOI: 10.1088/0022-3727/49/4/045007.
  [ BibTeX ] [ URL ]
   
  @article{Graeser2015c, author = {Graeser, Matthias and Bente, Klaas and Neumann, Alexander and Buzug, Thorsten M.}, journal = {Journal of Physics D: Applied Physics}, keywords = {BuzugThorsten GraeserMatthias IMT MAPIT MPS NeumannAlexander ParticleTheory SAMBA}, number = 4, title = {Trajectory Dependent Particle Response for Anisotropic Mono Domain Particles in Magnetic Particle Imaging}, volume = 49, year = 2015 }
• v. Gladiß, A., Graeser, M., Lüdtke-Buzug, K. and Buzug, T. M.: Contribution of brownian rotation and particle assembly polarisation to the particle response in magnetic particle spectrometry, Current Directions in Biomedical Engineering, 1(1), 298-301, 2015, DOI: 10.1515/cdbme-2015-0074.
  [ BibTeX ] [ URL ]
   
  @article{Gladiss2015c, author = {v. Gladiß, A. and Graeser, M. and Lüdtke-Buzug, K. and Buzug, T. M}, journal = {Current Directions in Biomedical Engineering}, keywords = {BuzugThorsten GladissAnselm GraeserMatthias IMT LuedtkeKerstin MPS}, number = 1, pages = {298-301}, title = {Contribution of brownian rotation and particle assembly polarisation to the particle response in magnetic particle spectrometry}, volume = 1, year = 2015 }
• Kläser, K., Graeser, M., Steinhagen, D. and Lüdtke-Buzug, K.: Construction of a device for magnetic separation of superparamagnetic iron oxide nanoparticles, Current Directions in Biomedical Engineering, 1(1), 306--309, 2015, DOI: 10.1515/cdbme-2015-0076.
  [ BibTeX ] [ URL ]
   
  @article{Luedtke-Buzug2015a, author = {Kläser, K. and Graeser, M. and Steinhagen, D. and Lüdtke-Buzug, K.}, journal = {Current Directions in Biomedical Engineering}, keywords = {BCE GraeserMatthias IMT LuedtkeKerstin SPIO}, number = 1, pages = {306--309}, title = {Construction of a device for magnetic separation of superparamagnetic iron oxide nanoparticles}, volume = 1, year = 2015 }
• Graeser, M., Bente, K. and Buzug, T. M.: Dynamic Single-Domain Particle Model for Magnetite Particles with Combined Crystalline and Shape Anisotropy, Journal of Physics D: Applied Physics, 48(27), 275001, 2015, DOI: 10.1088/0022-3727/48/27/275001.
  [ BibTeX ] [ URL ]
   
  @article{Graeser2015b, author = {Graeser, M. and Bente, K. and Buzug, T. M.}, journal = {Journal of Physics D: Applied Physics}, keywords = {BuzugThorsten GraeserMatthias IMT MPS ParticleTheory SAMBA}, number = 27, pages = 275001, title = {Dynamic Single-Domain Particle Model for Magnetite Particles with Combined Crystalline and Shape Anisotropy}, volume = 48, year = 2015 }
• Panagiotopoulos, N., Duschka, R. L., Ahlborg, M., Bringout, G., Debbeler, C., Graeser, M., Kaethner, C., Lüdtke-Buzug, K., Medimagh, H., Stelzner, J., Buzug, T. M., Barkhausen, J., Vogt, F. and Haegele, J.: Magnetic particle imaging: current developments and future directions, International Journal of Nanomedicine, 10, 3097-3114, 2015, DOI: 10.2147/ijn.s70488.
  [ BibTeX ] [ URL ]
   
  @article{Panagiotopoulos2015a, author = {Panagiotopoulos, Nikolaos and Duschka, Robert L. and Ahlborg, Mandy and Bringout, Gael and Debbeler, Christina and Graeser, Matthias and Kaethner, Christian and Lüdtke-Buzug, Kerstin and Medimagh, Hanne and Stelzner, Jan and Buzug, Thorsten M. and Barkhausen, Jörg and Vogt, Florian and Haegele, Julian}, journal = {International Journal of Nanomedicine}, keywords = {AhlborgMandy BringoutGael BuzugThorsten DebbelerChristina GraeserMatthias IMT KaethnerChristian LuedtkeKerstin MAPIT MPS MedimaghHanne SPIO StelznerJan}, month = {apr}, pages = {3097-3114}, publisher = {Dove Medical Press Ltd.}, title = {Magnetic particle imaging: current developments and future directions}, volume = 10, year = 2015 }
• Bringout, G., Stelzner, J., Ahlborg, M., Behrends, A., Bente, K., Debbeler, C., von Gladiß, A., Gräfe, K., Graeser, M., Kaethner, C., Kaufmann, S., Lüdtke-Buzug, K., Medimagh, H., Tenner, W., Weber, M. and Buzug, T. M.: Concept of a Rabbit-Sized FFL-Scanner, In: International Workshop on Magnetic Particle Imaging, 49, 2015.
  [ BibTeX ]
   
  @inproceedings{Bringout2015a, author = {Bringout, G. and Stelzner, J. and Ahlborg, M. and Behrends, A. and Bente, K. and Debbeler, C. and {von Gladiß}, A. and Gräfe, K. and Graeser, M. and Kaethner, C. and Kaufmann, S. and Lüdtke-Buzug, K. and Medimagh, H. and Tenner, W. and Weber, M. and Buzug, T. M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {AhlborgMandy BehrendsAndre BringoutGael BuzugThorsten DebbelerChristina GladissAnselm GraefeKsenija GraeserMatthias IMT KaethnerChristian MAPIT MedimaghHanne StelznerJan WeberMatthias}, pages = 49, title = {Concept of a Rabbit-Sized FFL-Scanner}, year = 2015 }
• Debbeler, C., Graeser, M., Knobloch, R. F., Becker, S. and Lüdtke-Buzug, K.: Evaluation of a Cotton-Mouton Relaxometer for the Characterization of Superparamagnetic Iron Oxide Nanoparticles, In: International Workshop on Magnetic Particle Imaging, 2015, DOI: 10.1109/IWMPI.2015.7107058.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Debbeler2015a, author = {Debbeler, C. and Graeser, M. and Knobloch, R. F. and Becker, S. and Lüdtke-Buzug, K.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {DebbelerChristina GraeserMatthias IMT LuedtkeKerstin RelaxationSpectroscopy}, title = {Evaluation of a Cotton-Mouton Relaxometer for the Characterization of Superparamagnetic Iron Oxide Nanoparticles}, year = 2015 }
• Welzel, T., Debbeler, C., Graeser, M., Kaufmann, S., Kusche, R. and Lüdtke-Buzug, K.: Analyzing Superparamagnetic Iron Oxide Nanoparticles (SPIONs) using Electrical Impedance Spectroscopy, In: International Workshop on Magnetic Particle Imaging, 2015, DOI: 10.1109/IWMPI.2015.7107062.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Welzel2015a, author = {Welzel, T. and Debbeler, C. and Graeser, M. and Kaufmann, S. and Kusche, R. and Lüdtke-Buzug, K.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {DebbelerChristina GraeserMatthias IMT LuedtkeKerstin SPIO}, title = {Analyzing Superparamagnetic Iron Oxide Nanoparticles (SPIONs) using Electrical Impedance Spectroscopy}, year = 2015 }
• Gräfe, K., Bringout, G., Graeser, M., Sattel, T. F. and Buzug, T. M.: System Matrix Recording and Phantom Measurements with a Single-Sided Magnetic Particle Imaging Device, IEEE Transactions on Magnetics, 51(2), 6502303, 2015, DOI: 10.1109/TMAG.2014.2330371.
  [ BibTeX ] [ URL ]
   
  @article{Graefe2015a, abstract = {Magnetic particle imaging (MPI) is a new imaging method, which uses superparamagnetic iron oxide nanoparticles as tracer material. Due to their tube-like design, most MPI devices have limited patient access. In this paper, an improved oil-cooled single-sided MPI device is presented that has the advantage that all coils, which are generating the magnetic fields or receiving the particle signal, are coplanar and on one side of the patient only. In consequence, the object, which will be scanned, is not limited in size. In this paper, a first 1-D image recorded with the new device is presented.}, author = {Gräfe, K. and Bringout, G. and Graeser, M. and Sattel, T.F. and Buzug, T.M.}, journal = {IEEE Transactions on Magnetics}, keywords = {BringoutGael BuzugThorsten GraefeKsenija GraeserMatthias IMT SingleSided}, month = {feb}, number = 2, pages = 6502303, title = {System Matrix Recording and Phantom Measurements with a Single-Sided Magnetic Particle Imaging Device}, volume = 51, year = 2015 }
• Behrends, A., Graeser, M. and Buzug, T. M.: Introducing a frequency-tunable magnetic particle spectrometer, In: Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung, 249-253, 2015, DOI: 10.1515/cdbme-2015-0062.
  [ BibTeX ] [ URL ]
   
  @inproceedings{behrends2015introducing, author = {Behrends, André and Graeser, Matthias and Buzug, Thorsten M.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, editor = {Dössel, Olaf}, keywords = {BehrendsAndre BuzugThorsten GraeserMatthias IMT SAMBA}, number = 1, pages = {249-253}, title = {Introducing a frequency-tunable magnetic particle spectrometer}, volume = 1, year = 2015 }
• Graeser, M., Ahlborg, M., Behrends, A., Bente, K., Bringout, G., Debbeler, C., v. Gladiß, A., Gräfe, K., Kaethner, C., Kaufmann, S., Lüdtke-Buzug, K., Medimagh, H., Stelzner, J., Weber, M. and Buzug, T. M.: A Device for Measureing the Trajectorey Dependent Magnetic Particle Performance for MPI, In: International Workshop on Magnetic Particle Imaging, 2015, DOI: 10.1109/IWMPI.2015.7107078.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Graeser2015a, author = {Graeser, M. and Ahlborg, M. and Behrends, A. and Bente, K. and Bringout, G. and Debbeler, C. and {v. Gladiß}, A. and Gräfe, K. and Kaethner, C. and Kaufmann, S. and Lüdtke-Buzug, K. and Medimagh, H. and Stelzner, J. and Weber, M. and Buzug, T. M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {AhlborgMandy BehrendsAndre BringoutGael BuzugThorsten DebbelerChristina GladissAnselm GraefeKsenija GraeserMatthias IMT KaethnerChristian LuedtkeKerstin MAPIT MPS MedimaghHanne SAMBA StelznerJan WeberMatthias}, title = {A Device for Measureing the Trajectorey Dependent Magnetic Particle Performance for MPI}, year = 2015 }
• Stelzner, J., Bringout, G., Graeser, M. and Buzug, T. M.: Toriodal Variometer for a Magnetic Particle Imaging Device, In: International Workshop on Magnetic Particle Imaging, 92, 2015, DOI: 10.1109/IWMPI.2015.7107074.
  [ BibTeX ]
   
  @inproceedings{stelzner2015toriodal, author = {Stelzner, Jan and Bringout, Gael and Graeser, Matthias and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {BringoutGael BuzugThorsten GraeserMatthias IMT MAPIT MPI StelznerJan}, pages = 92, title = {Toriodal Variometer for a Magnetic Particle Imaging Device}, year = 2015 }

2014 [ to top ]

• Wojtczyk, H., Bringout, G., Tenner, W., Graeser, M., Grüttner, M., Sattel, T. F., Gräfe, K. and Buzug, T. M.: Toward the Optimization of D-Shaped Coils for the Use in an Open Magnetic Particle Imaging Scanner, IEEE Transactions on Magnetics, 50(7), 5100507, 2014, DOI: 10.1109/TMAG.2014.2303113.
  [ BibTeX ] [ URL ]
   
  @article{Wojtczyk2014a, abstract = {Magnetic particle imaging (MPI) is a novel medical imaging modality that allows for the quantitative detection of superparamagnetic iron oxide nanoparticles using static and oscillating magnetic fields. Essential aspects in the coil optimization for MPI include the magnetic field generated per unit current and the magnetic field homogeneity. For a set of D-shaped coils, which can be used in an open MPI scanner with lateral patient access to enable multidimensional imaging, these quantities were analyzed for a range of configurations. The results were compared with the situation in a four-wire-model and a four-wire-model with return paths (called eight-wire-model). It was found that for large coil radii, the effects of the D-coil set resemble those of the eight-wire-model; however, the local minimum in the magnetic field inhomogeneity is less pronounced.}, author = {Wojtczyk, H. and Bringout, G. and Tenner, W. and Graeser, M. and Grüttner, M. and Sattel, T.F. and Gräfe, K. and Buzug, T.M.}, journal = {IEEE Transactions on Magnetics}, keywords = {AhlborgMandy BringoutGael BuzugThorsten GraefeKsenija GraeserMatthias IMT MAPIT MPITheo MedimaghHanne}, month = {July}, number = 7, pages = 5100507, title = {Toward the Optimization of D-Shaped Coils for the Use in an Open Magnetic Particle Imaging Scanner}, volume = 50, year = 2014 }
• Gräfe, K., Bringout, G., Graeser, M., Sattel, T. F. and Buzug, T. M.: Single-Sided Magnetic Particle Imaging Scanner: System Matrix Measurement, In: Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung, 638-642, 2014, DOI: 10.1515/bmt-2014-5009.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Graefe2014b, author = {Gräfe, K. and Bringout, G. and Graeser, M. and Sattel, T. F. and Buzug, T. M.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {BringoutGael BuzugThorsten GraefeKsenija GraeserMatthias IMT MPI}, pages = {638-642}, title = {Single-Sided Magnetic Particle Imaging Scanner: System Matrix Measurement}, year = 2014 }
• Stelzner, J., Graeser, M. and Buzug, T. M.: Design and Construction of a Toroidal Filter Coil for a Magnetic Particle Imaging Device, In: Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung, 679--682, 2014, DOI: 10.1515/bmt-2014-4280.
  [ BibTeX ]
   
  @inproceedings{Stelzner2014a, author = {Stelzner, Jan and Graeser, Matthias and Buzug, Thorsten M.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {BuzugThorsten GraeserMatthias IMT MAPIT StelznerJan}, number = {S1}, pages = {679--682}, publisher = {Walter De Gruyter}, title = {Design and Construction of a Toroidal Filter Coil for a Magnetic Particle Imaging Device}, volume = 59, year = 2014 }
• Weber, M., Bente, K., Graeser, M., Sattel, T. F. and Buzug, T. M.: Technical Aspects of a Two Dimensional Rotatable Field Free Line Imager for Magnetic Particle Imaging, In: International Workshop on Magnetic Particle Imaging, 98, 2014.
  [ BibTeX ]
   
  @inproceedings{Weber2014a, author = {Weber, M. and Bente, K. and Graeser, M. and Sattel, T. F. and Buzug, T. M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {BuzugThorsten GraeserMatthias IMT LUMEN WeberMatthias}, pages = 98, title = {Technical Aspects of a Two Dimensional Rotatable Field Free Line Imager for Magnetic Particle Imaging}, year = 2014 }
• Gräfe, K., Bringout, G., Graeser, M., Sattel, T. F. and Buzug, T. M.: System Matrix Recording and Phantom Measurements with a Single-Sided Magnetic Particle Imaging Device, In: International Workshop on Magnetic Particle Imaging, 92, 2014.
  [ BibTeX ]
   
  @inproceedings{Graefe2014a, author = {Gräfe, K. and Bringout, G. and Graeser, M. and Sattel, T. F. and Buzug, T. M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, editor = {Buzug, Thorsten M. and Borgert, Joern}, keywords = {BringoutGael BuzugThorsten GraefeKsenija GraeserMatthias IMT SingleSided}, pages = 92, title = {System Matrix Recording and Phantom Measurements with a Single-Sided Magnetic Particle Imaging Device}, year = 2014 }
• Bringout, G., Ahlborg, M., Graeser, M., Kaethner, C., Stelzner, J., Tenner, W., Wojtczyk, H. and Buzug, T. M.: Shielded drive coils for a rabbit sized FFL scanner, In: International Workshop on Magnetic Particle Imaging, 98, 2014.
  [ BibTeX ]
   
  @inproceedings{Bringout2014a, author = {Bringout, Gael and Ahlborg, Mandy and Graeser, Matthias and Kaethner, Christian and Stelzner, Jan and Tenner, Wiebke and Wojtczyk, Hanne and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {AhlborgMandy BringoutGael BuzugThorsten GraeserMatthias IMT KaethnerChristian MAPIT MedimaghHanne StelznerJan}, pages = 98, title = {Shielded drive coils for a rabbit sized FFL scanner}, year = 2014 }
• Graeser, M., Sattel, T. F. and Buzug, T. M.: Construction of a multi-dimensional transmit field generator and receive coil setup, In: International Workshop on Magnetic Particle Imaging, 94-95, 2014.
  [ BibTeX ]
   
  @inproceedings{Graeser2014a, author = {Graeser, M. and Sattel, T. F. and Buzug, T. M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {BuzugThorsten GraeserMatthias IMT MPI}, pages = {94-95}, title = {Construction of a multi-dimensional transmit field generator and receive coil setup}, year = 2014 }
• Behrends, A., Graeser, M., Stelzner, J. and Buzug, T. M.: Signal Chain Optimization in Magnetic Particle Imaging, In: Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung, 526--529, 2014, DOI: 10.1515/bmt-2014-5008.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Behrends2014a, author = {Behrends, A. and Graeser, M. and Stelzner, J. and Buzug, T. M.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {BehrendsAndre BuzugThorsten GraeserMatthias IMT MPI StelznerJan}, number = {s1}, pages = {526--529}, title = {Signal Chain Optimization in Magnetic Particle Imaging}, volume = 59, year = 2014 }
• Haegele, J., Lüdtke-Buzug, K., Schaecke, C., Graeser, M., Duschka, R. L., Panagiotopoulos, N., Buzug, T. M., Vogt, F. and Barkhausen, J.: Magnetic particle imaging: kinetics of the intravascular signal in vivo, International Journal of Nanomedicine, 4203-4209, 2014, DOI: 10.2147/ijn.s49976.
  [ BibTeX ] [ URL ]
   
  @article{haegele2014, author = {Haegele, Julian and Lüdtke-Buzug, Kerstin and Schaecke, Catharina and Graeser, Matthias and Duschka, Robert L. and Panagiotopoulos, Nikolaos and Buzug, Thorsten M. and Vogt, Florian and Barkhausen, Jörg}, journal = {International Journal of Nanomedicine}, keywords = {BuzugThorsten GraeserMatthias IMT LuedtkeKerstin MPS}, month = {sep}, pages = {4203-4209}, publisher = {Dove Medical Press Ltd.}, title = {Magnetic particle imaging: kinetics of the intravascular signal in vivo}, year = 2014 }

2013 [ to top ]

• Graeser, M., Knopp, T., Grüttner, M., Sattel, T. F. and Buzug, T. M.: Analog receive signal processing for magnetic particle imaging, Medical Physics, 40(4), 042303, 2013, DOI: 10.1118/1.4794482.
  [ BibTeX ] [ URL ]
   
  @article{Graeser2013b, abstract = {Purpose: Magnetic particle imaging (MPI) applies oscillating magnetic fields to determine the distribution of magnetic nanoparticlesin vivo. Using a receive coil, the change of the particle magnetization can be detected. However, the signal induced by the nanoparticles is superimposed by the direct feedthrough interference of the sinusoidal excitation field, which couples into the receive coils. As the latter is several magnitudes higher, the extraction of the particle signal from the excitation signal is a challenging task. Methods: One way to remove the interfering signal is to suppress the excitation signal by means of a band-stop filter. However, this technique removes parts of the desired particle signal, which are essential for direct reconstruction of the particle concentration. A way to recover the entire particle signal is to cancel out the excitation signal by coupling a matching cancellation signal into the receive chain. However, the suppression rates that can be achieved by signal cancellation are not as high as with the filtering method, which limits the sensitivity of this method. In order to unite the advantages of both methods, in this work the authors propose to combine the filtering and the cancellation technique. All methods were compared by measuring 10 μl Resovist, in the same field generator only switching the signal processing parts. Results: The reconstructed time signals of the three methods, show the advantage of the proposed combination of filtering and cancellation. The method preserves the fundamental frequency and is able to detect the tracer signal at its full bandwidth even for low concentrations. Conclusions: By recovering the full particle signal the SNR can be improved and errors in the x-space reconstruction are prevented. The authors show that the combined method provides this full particle signal and makes it possible to improve image quality.}, author = {Graeser, Matthias and Knopp, Tobias and Grüttner, Mandy and Sattel, Timo F. and Buzug, Thorsten M.}, journal = {Medical Physics}, keywords = {AhlborgMandy BuzugThorsten GraeserMatthias IMT MAPIT MPS}, number = 4, pages = {042303}, title = {Analog receive signal processing for magnetic particle imaging}, volume = 40, year = 2013 }
• Haegele, J., Biederer, S., Wojtczyk, H., Graeser, M., Knopp, T., Buzug, T. M., Barkhausen, J. and Vogt, F. M.: Toward cardiovascular interventions guided by magnetic particle imaging: First instrument characterization, Magnetic Resonance in Medicine, 69(6), 1761-1767, 2013, DOI: 10.1002/mrm.24421.
  [ BibTeX ] [ URL ]
   
  @article{Haegele2012j, abstract = {Magnetic particle imaging has emerged as a new technique for the visualization and quantification of superparamagnetic iron oxide nanoparticles. It seems to be a very promising application for cardiovascular interventional radiology. A prerequisite for interventions is the artifact-free visualization of the required instruments and implants. Various commercially available catheters, guide wires, and a catheter experimentally coated with superparamagnetic iron oxide nanoparticles were tested regarding their signal characteristics using magnetic particle spectroscopy to evaluate their performance in magnetic particle imaging. The results indicate that signal-generating and non-signal-generating instruments can be distinguished. Furthermore, coating or loading non-signal-generating instruments with superparamagnetic iron oxide nanoparticles seems to be a promising approach, but optimized nanoparticles need yet to be developed. Magn Reson Med, 2013. © 2012 Wiley Periodicals, Inc.}, author = {Haegele, Julian and Biederer, Sven and Wojtczyk, Hanne and Graeser, Matthias and Knopp, Tobias and Buzug, Thorsten M. and Barkhausen, Jörg and Vogt, Florian M.}, journal = {Magnetic Resonance in Medicine}, keywords = {BuzugThorsten GraeserMatthias IMT MedimaghHanne}, number = 6, pages = {1761-1767}, publisher = {Wiley Subscription Services, Inc., A Wiley Company}, title = {Toward cardiovascular interventions guided by magnetic particle imaging: First instrument characterization}, volume = 69, year = 2013 }
• Bente, K., Bringout, G., Debbeler, C., Gräfe, K., Graeser, M., Grüttner, M., Kaethner, C., Tenner, W., Weber, M., Wojtczyk, H., Buzug, T. M. and Lüdtke-Buzug, K.: Magnetic Particle Imaging - eine Einführung in die Instrumentierung und Bildrekonstruktion, In: Proceedings der 44. Jahrestagung der Deutschen Gesellschaft für Medizinische Physik, 95-100, 2013.
  [ BibTeX ]
   
  @inproceedings{Bente2013a, author = {Bente, K. and Bringout, G. and Debbeler, C. and Gräfe, K. and Graeser, M. and Grüttner, M. and Kaethner, C. and Tenner, W. and Weber, M. and Wojtczyk, H. and Buzug, T.M. and Lüdtke-Buzug, K.}, booktitle = {Proceedings der 44. Jahrestagung der Deutschen Gesellschaft für Medizinische Physik}, keywords = {AhlborgMandy BringoutGael BuzugThorsten DebbelerChristina GraefeKsenija GraeserMatthias IMT KaethnerChristian LuedtkeKerstin MedimaghHanne WeberMatthias}, pages = {95-100}, title = {Magnetic Particle Imaging - eine Einführung in die Instrumentierung und Bildrekonstruktion}, year = 2013 }
• Wojtczyk, H., Bringout, G., Tenner, W., Graeser, M., Grüttner, M., Sattel, T. F., Gräfe, K., Haegele, J., Duschka, R. L., Panagiotopoulos, N., Vogt, F. M., Barkhausen, J. and Buzug, T. M.: Comparison of Open Scanner Designs for Interventional Magnetic Particle Imaging, In: Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung, 2013, DOI: 10.1515/bmt-2013-4279.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Wojtczyk2013b, author = {Wojtczyk, H. and Bringout, G. and Tenner, W. and Graeser, M. and Grüttner, M. and Sattel, T.F. and Gräfe, K. and Haegele, J. and Duschka, R.L. and Panagiotopoulos, N. and Vogt, F.M. and Barkhausen, J. and Buzug, T.M.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {AhlborgMandy BringoutGael BuzugThorsten GraefeKsenija GraeserMatthias IMT MAPIT MPITheo MedimaghHanne}, title = {Comparison of Open Scanner Designs for Interventional Magnetic Particle Imaging}, volume = 58, year = 2013 }
• Krieger, J., Köhler, K., Graeser, M. and Lüdtke-Buzug, K.: Construction of a Spectrometer to Measure the Cotton-Mouton Effect of Superparamagnetic Iron Oxide Nanoparticles, In: Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung, 2013, DOI: 10.1515/bmt-2013-4102.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Krieger2013a, author = {Krieger, J. and Köhler, K. and Graeser, M. and Lüdtke-Buzug, K.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {GraeserMatthias IMT LuedtkeKerstin RelaxationSpectroscopy SPIO}, title = {Construction of a Spectrometer to Measure the Cotton-Mouton Effect of Superparamagnetic Iron Oxide Nanoparticles}, volume = 58, year = 2013 }
• Timmermeyer, A., Wojtczyk, H., Tenner, W., Bringout, G., Grüttner, M., Graeser, M., Sattel, T. F., Halkola, A. and Buzug, T. M.: Super-resolution approach in magnetic particle imaging – Evaluation of effectiveness at various noise levels, In: Proceedings der 44. Jahrestagung der Deutschen Gesellschaft für Medizinische Physik, 2013.
  [ BibTeX ]
   
  @inproceedings{Timmermeyer2013b, author = {Timmermeyer, Anja and Wojtczyk, Hanne and Tenner, Wiebke and Bringout, Gael and Grüttner, Mandy and Graeser, Matthias and Sattel, Timo F. and Halkola, Aleksi and Buzug, Thorsten M.}, booktitle = {Proceedings der 44. Jahrestagung der Deutschen Gesellschaft für Medizinische Physik}, editor = {Treuer, Harald}, keywords = {AhlborgMandy BringoutGael BuzugThorsten GraeserMatthias IMT MAPIT MPITheo MedimaghHanne}, title = {Super-resolution approach in magnetic particle imaging – Evaluation of effectiveness at various noise levels}, year = 2013 }
• Haegele, J., Duschka, R., Graeser, M., Schaecke, C., Panagiotopoulos, N., Buzug, T. M., Barkhausen, J. and Vogt, F. M.: Magnetic Particle Imaging: Kinetik des intravaskulären Tracersignals in vivo, In: Deutscher Röntgenkongress, 2013.
  [ BibTeX ]
   
  @inproceedings{Haegele2013b, author = {Haegele, J. and Duschka, R. and Graeser, M. and Schaecke, C. and Panagiotopoulos, N. and Buzug, T. M. and Barkhausen, J. and Vogt, F. M.}, booktitle = {Deutscher Röntgenkongress}, keywords = {BuzugThorsten GraeserMatthias IMT}, title = {Magnetic Particle Imaging: Kinetik des intravaskulären Tracersignals in vivo}, year = 2013 }
• Wojtczyk, H., Timmermeyer, A., Tenner, W., Sattel, T. F., Bringout, G., Grüttner, M., Graeser, M. and Buzug, T. M.: Measure of trajectory quality in Magnetic Particle Imaging, In: International Workshop on Magnetic Particle Imaging, 2013, DOI: 10.1109/IWMPI.2013.6528351.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Wojtczyk2013a, abstract = {For all trajectories, the energies computed in time and frequency domain agree well. The maximum local magnetization change dM/dt is largest for the spiral and Lissajous trajectories while it is smallest for the Cartesian trajectory. For the Lissajous and Cartesian trajectories, the total magnetization change appears more homogeneous over the field of view (FOV) than for the radial and spiral trajectories, where it is stronger in the center compared to the borders. In general, areas of homogeneous high total magnetization change seem to correspond to areas of high spatial resolution in reconstructed images.}, author = {Wojtczyk, H. and Timmermeyer, A. and Tenner, W. and Sattel, T.F. and Bringout, G. and Grüttner, M. and Graeser, M. and Buzug, T.M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {AhlborgMandy BringoutGael BuzugThorsten GraeserMatthias IMT MAPIT MPITheo MedimaghHanne}, month = {March}, title = {Measure of trajectory quality in Magnetic Particle Imaging}, year = 2013 }
• Haegele, J., Duschka, R., Graeser, M., Lüdtke-Buzug, K., Schaecke, C., Panagiotopoulos, N., Buzug, T., Barkhausen, J. and Vogt, F.: Magnetic Particle Imaging: Kinetics of the intravascular signal in vivo, In: International Workshop on Magnetic Particle Imaging, 2013, DOI: 10.1109/IWMPI.2013.6528350.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Haegele2013a, abstract = {The highest spectral MPI signal was measured directly after Resovist^® administration (3,21*10^-9 Am2Hz^-1). After application of Resovist^® the signal decreased to 39.7 % within 5 minutes and to 20.5 % and 12.1 % within 10 and 15 minutes, respectively (see Fig. 1). Within 30 minutes, the measured signal was below the background noise level.}, author = {Haegele, J. and Duschka, R. and Graeser, M. and Lüdtke-Buzug, K. and Schaecke, C. and Panagiotopoulos, N. and Buzug, T. and Barkhausen, J. and Vogt, F.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {BuzugThorsten GraeserMatthias IMT LuedtkeKerstin}, month = {March}, title = {Magnetic Particle Imaging: Kinetics of the intravascular signal in vivo}, year = 2013 }
• Timmermeyer, A., Wojtczyk, H., Tenner, W., Bringout, G., Grüttner, M., Graeser, M., Sattel, T., Halkola, A. and Buzug, T. M.: Super-resolution approaches for resolution enhancement in magnetic particle imaging, In: International Workshop on Magnetic Particle Imaging, 2013, DOI: 10.1109/IWMPI.2013.6528360.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Timmermeyer2013a, abstract = {Given a definition of spatial resolution that considers two objects as distinguished if the minimum value of the gap is less than 50% of the value at the object position [7], both approaches achieved an improvement of the spatial resolution in the 1D simulation study as visualized in Fig. 1 and 2. If the spatial resolution is considered as the minimum width of two distinguished lines, the first approach using spatially shifted images achieved a spatial resolution of 1.7 mm and the second approach using different sampling points achieved a resolution of 2.6 mm. This is an improvement in comparison to the used low resolution images with a spatial resolution of 2 mm (first approach) and 2.9 mm (second approach).}, author = {Timmermeyer, A. and Wojtczyk, H. and Tenner, W. and Bringout, G. and Grüttner, M. and Graeser, M. and Sattel, T. and Halkola, A. and Buzug, T.M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {AhlborgMandy BringoutGael BuzugThorsten GraeserMatthias IMT MAPIT MPITheo MedimaghHanne}, month = {March}, title = {Super-resolution approaches for resolution enhancement in magnetic particle imaging}, year = 2013 }
• Bringout, G., Wojtczyk, H., Tenner, W., Graeser, M., Grüttner, M., Haegele, J., Duschka, R., Panagiotopoulos, N., Vogt, F. M., Barkhausen, J. and Buzug, T. M.: A high power driving and selection field coil for an open MPI scanner, In: International Workshop on Magnetic Particle Imaging, 2013, DOI: 10.1109/IWMPI.2013.6528332.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Bringout2013a, abstract = {Three Litz wires have been used in parallel in order to decrease the layer to layer voltage down to 4 kV and the coil voltage down to 8 kV. A two millimeter thick epoxy plate has been glued between each layer, in order to prevent any electrical breakdown between the layers. A special epoxy has been used to minimize the inner temperature of the coil, which reached 180°C with a dissipated power of 5.2 kW. The use of parallel Litz wire leads to currents having different phase angle in every wire which has to be corrected.}, author = {Bringout, G. and Wojtczyk, H. and Tenner, W. and Graeser, M. and Grüttner, M. and Haegele, J. and Duschka, R. and Panagiotopoulos, N. and Vogt, F.M. and Barkhausen, J. and Buzug, T.M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {AhlborgMandy BringoutGael BuzugThorsten GraeserMatthias IMT MAPIT MedimaghHanne}, month = {March}, title = {A high power driving and selection field coil for an open MPI scanner}, year = 2013 }
• Tenner, W., Wojtczyk, H., Bringout, G., Graeser, M., Grüttner, M., Haegele, J., Duschka, R. L., Panagiotopoulos, N., Vogt, F. M., Barkhausen, J. and Buzug, T. M.: Receive coil optimization for an open magnetic particle imaging scanner, In: International Workshop on Magnetic Particle Imaging, 2013, DOI: 10.1109/IWMPI.2013.6528336.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Tenner2013a, abstract = {Helmholtz-like coil pairs with a radius of 15 cm have the highest sensitivity for the given geometry. Their homogeneity decreases with higher radius, which is both shown in Fig. 4. Arrays of circular coils show very good homogeneity, which further increases with increasing number of coils, but have comparably poor sensitivity in the FOV. D-shaped coils have both decreasing sensitivity and homogeneity with increasing radius. An increasing distance between a D-coil pair increases the homogeneity, but leads to decreasing sensitivity. Nested D-coils can show an improved homogeneity without a loss in sensitivity. Optimized circular and not nested D-shaped coil pairs with a radius of 15 cm were manufactured and the resonance frequency for both geometries was measured to be about 1.9 MHz for the tight and 2.6 MHz for the loose winding technique.}, author = {Tenner, W. and Wojtczyk, H. and Bringout, G. and Graeser, M. and Grüttner, M. and Haegele, J. and Duschka, R.L. and Panagiotopoulos, N. and Vogt, F.M. and Barkhausen, J. and Buzug, T.M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {AhlborgMandy BringoutGael BuzugThorsten GraeserMatthias IMT MAPIT MedimaghHanne}, month = {March}, title = {Receive coil optimization for an open magnetic particle imaging scanner}, year = 2013 }
• Graeser, M., Knopp, T., Grüttner, M., Sattel, T. F., Bringout, G., Tenner, W., Wojtczyk, H. and Buzug, T. M.: Cancellation techniques for MPI, In: International Workshop on Magnetic Particle Imaging, 2013, DOI: 10.1109/IWMPI.2013.6528331.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Graeser2013a, abstract = {Due to the superposition of the high magnitude drive field signal and the low magnitude particle signal in magnetic particle imaging (MPI), the received signal has to be separated at its fundamental frequency [1]. This is often done by filtering causing DC offset drifts in the particle answer using x-space reconstruction. These errors are currently corrected by dividing the FOV in partial FOVs [2]. However, small FOV sizes reduce the temporal resolution if the region of interest stays the same. This work proposes a combination of filtering and cancellation to prevent the fundamental frequency of the particle signal as well as provide the possibility of larger FOVs and presents three different cancellation coil techniques.}, author = {Graeser, M. and Knopp, T. and Grüttner, M. and Sattel, T.F. and Bringout, G. and Tenner, W. and Wojtczyk, H. and Buzug, T.M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {AhlborgMandy BringoutGael BuzugThorsten GraeserMatthias IMT MAPIT MPS MedimaghHanne}, month = {March}, title = {Cancellation techniques for MPI}, year = 2013 }
• Grüttner, M., Sattel, T. F., Bringout, G., Graeser, M., Tenner, W., Wojtczyk, H. and Buzug, T. M.: Truncation artifacts in Magnetic Particle Imaging, In: International Workshop on Magnetic Particle Imaging, 2013, DOI: 10.1109/IWMPI.2013.6528335.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Gruettner2013b, abstract = {Figure 1 clearly shows the effect of truncation artifacts when particles are not covered by the trajectory. With the removal of edge pixels these artifacts disappear. However, some information of the image is lost depending on the size of the necessary cut-off. With the multi-resolution approach the full information is used. Instead of removing pixels they are combined to large pixels. This method results in a better quality with small cut-offs compared to the non-compensated images.}, author = {Grüttner, M. and Sattel, T.F. and Bringout, G. and Graeser, M. and Tenner, W. and Wojtczyk, H. and Buzug, T.M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {AhlborgMandy BringoutGael BuzugThorsten GraeserMatthias IMT MAPIT MPITheo MedimaghHanne}, month = {March}, title = {Truncation artifacts in Magnetic Particle Imaging}, year = 2013 }
• Gräfe, K., Grüttner, M., Sattel, T. F., Graeser, M. and Buzug, T. M.: Single-sided magnetic particle imaging: magnetic field and gradient, In: SPIE Medical Imaging, 867219, 2013, DOI: 10.1117/12.2001610.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Graefe2013a, author = {Gräfe, K. and Grüttner, M. and Sattel, T. F. and Graeser, M. and Buzug, T. M.}, booktitle = {SPIE Medical Imaging}, editor = {Weaver, John B. and Molthen, Robert C.}, keywords = {AhlborgMandy BuzugThorsten GraefeKsenija GraeserMatthias IMT SingleSided}, month = {mar}, pages = 867219, publisher = {{SPIE}-Intl Soc Optical Eng}, title = {Single-sided magnetic particle imaging: magnetic field and gradient}, year = 2013 }

2012 [ to top ]

• Graeser, M., Knopp, T., Sattel, T. F., Grüttner, M. and Buzug, T. M.: Signal separation in magnetic particle imaging, In: Nuclear Science Symposium and Medical Imaging Conference, 2483-2485, 2012, DOI: 10.1109/NSSMIC.2012.6551566.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Graeser2012b, abstract = {Magnetic particle imaging (MPI) applies oscillating magnetic fields to measure the distribution of magnetic nanoparticles in-vivo. Using receive coils, the change of the particle magnetization can be detected. However, the signal induced by the nanoparticles is superimposed by the signal induced by the sinusoidal excitation field, which directly couples into the receive coils. As the latter is several magnitudes higher, the separation of the particle signal from the excitation signal is a challenging task. One way to remove the excitation signal from the induced voltage in the receive coil is to suppress the excitation signal at its base frequency by means of a band-stop filter. An alternative is to recover the particle signal by compensating the excitation signal in the receive chain, which allows recovering the particle signal at its full bandwidth. In this work, it is proposed to combine both methods which allows increasing the dynamic range of the recorded signal while still recovering the fundamental frequency.}, author = {Graeser, M. and Knopp, T. and Sattel, T.F. and Grüttner, M. and Buzug, T.M.}, booktitle = {Nuclear Science Symposium and Medical Imaging Conference}, keywords = {AhlborgMandy BuzugThorsten GraeserMatthias IMT MAPIT MPS}, month = {oct}, pages = {2483-2485}, title = {Signal separation in magnetic particle imaging}, year = 2012 }
• Buzug, T. M., Bringout, G., Erbe, M., Gräfe, K., Graeser, M., Grüttner, M., Halkola, A., Sattel, T. F., Tenner, W., Wojtczyk, H., Haegele, J., Vogt, F. M., Barkhausen, J. and Lüdtke-Buzug, K.: Magnetic particle imaging: Introduction to imaging and hardware realization, Zeitschrift für Medizinische Physik, 22(4), 323-334, 2012, DOI: 10.1016/j.zemedi.2012.07.004.
  [ BibTeX ] [ URL ]
   
  @article{Buzug2012b, abstract = {Magnetic Particle Imaging (MPI) is a recently invented tomographic imaging method that quantitatively measures the spatial distribution of a tracer based on magnetic nanoparticles. The new modality promises a high sensitivity and high spatial as well as temporal resolution. There is a high potential of \{MPI\} to improve interventional and image-guided surgical procedures because, today, established medical imaging modalities typically excel in only one or two of these important imaging properties. \{MPI\} makes use of the non-linear magnetization characteristics of the magnetic nanoparticles. For this purpose, two magnetic fields are created and superimposed, a static selection field and an oscillatory drive field. If superparamagnetic iron-oxide nanoparticles (SPIOs) are subjected to the oscillatory magnetic field, the particles will react with a non-linear magnetization response, which can be measured with an appropriate pick-up coil arrangement. Due to the non-linearity of the particle magnetization, the received signal consists of the fundamental excitation frequency as well as of harmonics. After separation of the fundamental signal, the nanoparticle concentration can be reconstructed quantitatively based on the harmonics. The spatial coding is realized with the static selection field that produces a field-free point, which is moved through the field of view by the drive fields. This article focuses on the frequency-based image reconstruction approach and the corresponding imaging devices while alternative concepts like x-space \{MPI\} and field-free line imaging are described as well. The status quo in hardware realization is summarized in an overview of \{MPI\} scanners.}, author = {Buzug, T.M. and Bringout, G. and Erbe, M. and Gräfe, K. and Graeser, M. and Grüttner, M. and Halkola, A. and Sattel, T.F. and Tenner, W. and Wojtczyk, H. and Haegele, J. and Vogt, F.M. and Barkhausen, J. and Lüdtke-Buzug, K.}, journal = {Zeitschrift für Medizinische Physik}, keywords = {AhlborgMandy BringoutGael BuzugThorsten GraefeKsenija GraeserMatthias IMT LuedtkeKerstin MedimaghHanne}, note = {Schwerpunkt: Multimodale Bildgebung und Therapie}, number = 4, pages = {323-334}, title = {Magnetic particle imaging: Introduction to imaging and hardware realization}, volume = 22, year = 2012 }
• Bringout, G., Wojtczyk, H., Grüttner, M., Graeser, M., Tenner, W., Hägele, J., Vogt, F. M., Barkhausen, J. and Buzug, T. M.: Safety Aspects for a Pre-clinical Magnetic Particle Imaging Scanner, In: Springer Proceedings in Physics, 355-359, 2012, DOI: 10.1007/978-3-642-24133-8_57.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Bringout2012a, author = {Bringout, Gael and Wojtczyk, Hanne and Grüttner, Mandy and Graeser, Matthias and Tenner, Wiebke and Hägele, Julian and Vogt, FlorianM. and Barkhausen, Jörg and Buzug, ThorstenM.}, booktitle = {Springer Proceedings in Physics}, editor = {Buzug, Thorsten M. and Borgert, Jörn}, keywords = {AhlborgMandy BringoutGael BuzugThorsten GraeserMatthias IMT MAPIT MedimaghHanne}, pages = {355-359}, publisher = {Springer Berlin Heidelberg}, series = {Springer Proceedings in Physics}, title = {Safety Aspects for a Pre-clinical Magnetic Particle Imaging Scanner}, volume = 140, year = 2012 }
• Graeser, M., Biederer, S., Grüttner, M., Wojtczyk, H., Sattel, T. F., Tenner, W., Bringout, G. and Buzug, T. M.: Determination of System Functions for Magnetic Particle Imaging, In: Springer Proceedings in Physics, 59-64, 2012, DOI: 10.1007/978-3-642-24133-8_10.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Graeser2012a, author = {Graeser, M. and Biederer, S. and Grüttner, M. and Wojtczyk, H. and Sattel, T.F. and Tenner, W. and Bringout, G. and Buzug, T.M.}, booktitle = {Springer Proceedings in Physics}, editor = {Buzug, Thorsten M. and Borgert, Jörn}, keywords = {AhlborgMandy BringoutGael BuzugThorsten GraeserMatthias IMT MAPIT MPS MedimaghHanne}, pages = {59-64}, publisher = {Springer Berlin Heidelberg}, series = {Springer Proceedings in Physics}, title = {Determination of System Functions for Magnetic Particle Imaging}, volume = 140, year = 2012 }
• Wojtczyk, H., Haegele, J., Grüttner, M., Tenner, W., Bringout, G., Graeser, M., Vogt, F. M., Barkhausen, J. and Buzug, T. M.: Visualization of Instruments in interventional Magnetic Particle Imaging (iMPI): A Simulation Study on SPIO Labelings, In: Springer Proceedings in Physics, 167-172, 2012, DOI: 10.1007/978-3-642-24133-8_27.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Wojtczyk2012a, author = {Wojtczyk, Hanne and Haegele, Julian and Grüttner, Mandy and Tenner, Wiebke and Bringout, Gael and Graeser, Matthias and Vogt, FlorianM. and Barkhausen, Jörg and Buzug, ThorstenM.}, booktitle = {Springer Proceedings in Physics}, editor = {Buzug, Thorsten M. and Borgert, Jörn}, keywords = {AhlborgMandy BringoutGael BuzugThorsten GraeserMatthias IMT MAPIT MPITheo MedimaghHanne}, pages = {167-172}, publisher = {Springer Berlin Heidelberg}, series = {Springer Proceedings in Physics}, title = {Visualization of Instruments in interventional Magnetic Particle Imaging (iMPI): A Simulation Study on SPIO Labelings}, volume = 140, year = 2012 }
• Grüttner, M., Sattel, T. F., Graeser, M., Wojtczyk, H., Bringout, G., Tenner, W. and Buzug, T. M.: Enlarging the Field of View in Magnetic Particle Imaging – A Comparison, In: Springer Proceedings in Physics, 249-253, 2012, DOI: 10.1007/978-3-642-24133-8_40.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Gruettner2012a, author = {Grüttner, M. and Sattel, T.F. and Graeser, M. and Wojtczyk, H. and Bringout, G. and Tenner, W. and Buzug, T.M.}, booktitle = {Springer Proceedings in Physics}, editor = {Buzug, Thorsten M. and Borgert, Jörn}, keywords = {AhlborgMandy BringoutGael BuzugThorsten GraeserMatthias IMT MAPIT MPITheo MedimaghHanne}, pages = {249-253}, publisher = {Springer Berlin Heidelberg}, series = {Springer Proceedings in Physics}, title = {Enlarging the Field of View in Magnetic Particle Imaging – A Comparison}, volume = 140, year = 2012 }
• Haegele, J., Biederer, S., Wojtczyk, H., Graeser, M., Knopp, T., Buzug, T. M., Barkhausen, J. and Vogt, F. M.: Towards cardiovascular interventions guided by magnetic particle imaging (MPI): first instrument characterisation, In: European Congress on Radiology, B-0287, 2012.
  [ BibTeX ]
   
  @inproceedings{Haegele2012b, author = {Haegele, J. and Biederer, S. and Wojtczyk, H. and Graeser, M. and Knopp, T. and Buzug, T. M. and Barkhausen, J. and Vogt, F. M.}, booktitle = {European Congress on Radiology}, keywords = {BuzugThorsten GraeserMatthias IMT MedimaghHanne}, pages = {B-0287}, title = {Towards cardiovascular interventions guided by magnetic particle imaging (MPI): first instrument characterisation}, year = 2012 }
• Graeser, M., Bohnert, J. and Dössel, O.: Abschätzung der muskelstimulierenden Wirkung von Magnetwechselfeldern im kHz-Bereich, In: Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung, 2012.
  [ BibTeX ]
   
  @inproceedings{Graeser2010a, author = {Graeser, M. and Bohnert, J. and Dössel, O.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {GraeserMatthias}, title = {Abschätzung der muskelstimulierenden Wirkung von Magnetwechselfeldern im kHz-Bereich}, volume = 55, year = 2012 }

2011 [ to top ]

• Graeser, M., Biederer, S., Grüttner, M., Wojtczyk, H., Tenner, W., Sattel, T. F., Gleich, B., Borgert, J. and Buzug, T. M.: Determination of a 1D-MPI-System-Function using a Magnetic Particle Spectroscope, In: Biomed Tech, 2011.
  [ BibTeX ]
   
  @inproceedings{Graeser2011a, author = {Graeser, M. and Biederer, S. and Grüttner, M. and Wojtczyk, H. and Tenner, W. and Sattel, T. F. and Gleich, B. and Borgert, J. and Buzug, T. M.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, journal = {Biomed Tech}, keywords = {AhlborgMandy BuzugThorsten GraeserMatthias IMT MAPIT MPS MedimaghHanne}, number = {Suppl. 1}, title = {Determination of a 1D-MPI-System-Function using a Magnetic Particle Spectroscope}, volume = 56, year = 2011 }
• Buzug, T. M., Sattel, T. F., Erbe, M., Biederer, S., Graeser, M., Grüttner, M., Tenner, W., Wojtczyk, H., Borgert, J., Finas, D., Dietrich, K., Vogt, F. M., Barkhausen, J., Lüdtke-Buzug, K. and Knopp, T.: Magnetic Particle Imaging: Novel Field Generating Devices for Optimized Imaging, In: Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung, 2011.
  [ BibTeX ]
   
  @inproceedings{Buzug2011b, author = {Buzug, T. M. and Sattel, T. F. and Erbe, M. and Biederer, S. and Graeser, M. and Grüttner, M. and Tenner, W. and Wojtczyk, H. and Borgert, J. and Finas, D. and Dietrich, K. and Vogt, F. M. and Barkhausen, J. and Lüdtke-Buzug, K. and Knopp, T.}, journal = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {AhlborgMandy BuzugThorsten GraeserMatthias IMT LuedtkeKerstin MedimaghHanne}, number = {Suppl. 1}, title = {Magnetic Particle Imaging: Novel Field Generating Devices for Optimized Imaging}, volume = 56, year = 2011 }
• Grüttner, M., Graeser, M., Biederer, S., Sattel, T. F., Wojtczyk, H., Tenner, W., Knopp, T., Gleich, B., Borgert, J. and Buzug, T. M.: 1D-image reconstruction for magnetic particle imaging using a hybrid system function, In: Nuclear Science Symposium and Medical Imaging Conference, 2545-2548, 2011, DOI: 10.1109/NSSMIC.2011.6152687.
  [ BibTeX ] [ URL ]
   
  @inproceedings{Gruettner2011, abstract = {Magnetic Particle Imaging is a promising imaging technique using iron-oxide nanoparticle tracers. The spatial distribution of these particles can be determined by solving a system of linear equations. This reconstruction is based on a system function that either has to be measured or can be calculated with given information about scanner topology and particle characteristics. This paper introduces a new approach combining both possibilities. A Magnetic Particle Spectrometer is used to obtain a hybrid system function. Furthermore, we will show that the hybrid system function can be successfully used for 1D-image reconstruction and potentially is an alternative to the measurement-based system function.}, author = {Grüttner, M. and Graeser, M. and Biederer, S. and Sattel, T.F. and Wojtczyk, H. and Tenner, W. and Knopp, T. and Gleich, B. and Borgert, J. and Buzug, T.M.}, booktitle = {Nuclear Science Symposium and Medical Imaging Conference}, keywords = {AhlborgMandy BuzugThorsten GraeserMatthias IMT MPITheo MedimaghHanne}, month = {oct}, pages = {2545-2548}, title = {1D-image reconstruction for magnetic particle imaging using a hybrid system function}, year = 2011 }