Computed Tomography

Computed tomography (CT) is a well established imaging modality. And, due to its ease of use, clear interpretation in terms of physical attenuation values, progress in detector technology, reconstruction mathematics, and reduction of radiation exposure, computed tomography will maintain and expand its established position in the field of radiology. Please follow the links below for more detailed information about each project we are currently pursuing.

Metal Artifact Reduction (MAR)

NFFT-Based Sinogram Restauration
Curvelet-based Sinogram Inpainting
Simultaneous reconstruction and registration
λ-MLEM

Tomosynthesis

Algebraic reconstruction with non-linear backprojection
A hybrid dual-axis tilt platform acquisition

Iterative Image Reconstruction

Optimization of projection access order for SART

Technical Imaging

Micro CT
Non-Destructive Testing
Phantom-based Determination of Noise Distribution
Dual Energy

Motion detection

Sinogram-Based Motion Detection

If you are looking for a topic for your thesis do not hesitate to contact the team members directly or the director of the Institute of Medical Engineering, Prof. Thorsten M. Buzug. A list of available topics for BSc and MSc final year projects can be found on this page. 

Hendrik Müller (Bachelor Student)
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Sylvia Kiencke, M.Sc.,
Data-based Projection Access Order for SART, April 2013

Aileen Cordes, B.Sc.,
Validation of Digital Tomosynthesis Reconstruction Based on Micro-CT, November 2011

Christian Kaethner, B.Sc.,
Referenzlose Beurteilung der Bildqualität von CT-Bildern, November 2010

Mohamed S. Hassan, M.Sc.,
Objective Evaluation of 3D Geometric Image Quality in C-Arm Angiography Systems, November 2009 (in cooperation with Siemens Healthcar AX Forchheim).

 Mostafa Kamel, M.Sc.,
A Simulation Framework for Cone-Beam CT, June 2009.

Dipl.-Inf. Bärbel Kratz,
Angepasste NFFT-Algorithmen zur Metallartefaktkorrektur in der Computertomographie, April 2008.

Dipl.-Inf. Svitlana Ens,
Sinogrammbasierte Bewegungsdetektion in der Transmissions-Computertomographie, February 2008.

The development in the field of CT is financially supported by the DFG Graduate School of Computing in Medicine and Life Sciences and SIRONA AG.

BMT 2012 1st Prize Best Scientific contribution "A Novel Acquisition Scheme for Higher Axial Resolution and Improved Image Quality in Digital Tomosynthesis"
Laureate: Yulia Levakhina

Fokusfinder 2011- Best Bachelor Thesis in Image Processing for "Validation of Digital Tomosynthesis Reconstruction Based on Micro-CT"
Laureate: Aileen Cordes

Fokusfinder 2009 - Best Diploma Thesis in Image Processing for NFFT-Based Sinogram Restauration,
Laureate: Bärbel Kratz

BVM 2006 prize for Metal-Artifact Reduction Using Directional Interpolation,
Laureate: May Oehler

2013

Y.~M. Levakhina, J. Mueller, R.~L.~Duschka, F.~M.~Vogt, J.~Barkhausen, T.~M.~Buzug: Weighted Simultaneous Algebraic Reconstruction Technique for Tomosynthesis Imaging of Objects with High-Attenuation Featuresn, Med. Phys, 2013, 40, p.xx-xx

S. Kiencke, Y.M. Levakhina , T. M. Buzug: Greedy projection access order for SART (Simultaneous Algebraic Reconstruction Technique), Bildverarbeitung für die Medizin, 2013

M.Stille, B. Kratz, J. Müller, N. Maaß, I. Schasiepen, M. Elter, I. Weyers, T. M. Buzug: Influence of metal segmentation on the quality of metal artifact reduction methods, SPIE Medical Imaging, 2013

2012

B. Kratz, I. Weyers, T. M. Buzug: A fully 3D approach for metal artifact reduction in computed tomography, Medical Physics, 2012, 39, 11

R.L. Duschka, P. Bischoff, K. May, Y. Levakhina, T.M. Buzug, A. Kovacs, P. Hunold, J. Barkhausen, F.M. Vogt: Digitale Tomosynthese - Ein neues Verfahren zur Beurteilung degenerativer Gelenkveränderungen im Vergleich zum konventionellen Röntgen, RöFo: Fortschritte auf dem Gebiet der Röntgenstrahlen und bildgebenden Verfahren, 2012, 184 - VO216_4

Y. M. Levakhina, R. L. Duschka, F. Vogt, J. Barkhausen, T. M. Buzug: A Novel Acquisition Scheme for Higher Axial Resolution and Improved Image Quality in Digital Tomosynthesis, Biomed Tech, 2012, xx, p.xx

A. Cordes, Y. M. Levakhina,, T. M. Buzug: A Method for Validation and Evaluation of Digital Tomosynthesis Reconstruction, Biomed Tech, 2012, p.513

Y. M. Levakhina, J. Müller, R. L. Duschka, F. Vogt, J. Barkhausen, T. M. Buzug: Algebraic tomosynthesis reconstruction with spatially adaptive updating term, Proceedings of The Second International Conference on Image Formation in X-Ray Computed Tomography, 2012, p.46-49

J. Mueller, F. Kaiser, Y.M. Levakhina, M. Stille, I. Weyers, T.M. Buzug: An open database of metal artifacts cases for clinical CT imaging, Proceedings of The Second International Conference on Image Formation in X-Ray Computed Tomography, 2012, p.210-213

M. Kleine, T. M. Buzug: Curvelet-based Inpainting for Metal Artifact Reduction in Computed Tomography, Proceedings of The Second International Conference on Image Formation in X-Ray Computed Tomography, 2012, p.242-245

R. L. Duschka, P. Bischoff, K. May, Y. M. Levakhina, T. M. Buzug, A. Kovacs, P. Hunold, J. Barkhausen, F. M. Vogt: Digital tomosynthesis: a fierce competitor to CR in examinations of small bones, ECR 2012 - European Congress of Radiology, Wien, Austria, 2012, p.C-1514

J. Hamer, B. Kratz, J. Müller, T. M. Buzug: Modified Euler´s Elastica Inpainting for Metal Artifact Reduction in CT, Bildverarbeitung für die Medizin 2012, 2012, Berlin, Germany

M. Kleine, J. Müller, T. M. Buzug: L1‐Regularisierung für die Computertomographie mit begrenztem Aufnahmewinkel, Bildverarbeitung für die Medizin 2012, 2012, Berlin, Germany, p.147-152

Y. M. Levakhina, R. L. Duschka, F. Vogt, J. Barkhausen, T. M. Buzug: An adaptive spatially-dependent weighting scheme for tomosynthesis reconstruction, Proc. SPIE, 2012, 8313, p.831350-831356

B. Kratz, S. Ens, C. Kaethner, J. Müllerand T. M. Buzug: Quality evaluation for metal influenced CT-data, Proceedings of SPIE Medical Imaging 2012: Image Processing, 2012, 8314, p.83143Y-1 - 83143Y-6

A. Cordes, Y. M. Levakhina, T. M. Buzug: Mikro-CT basierte Validierung digitaler Tomosynthese Rekonstruktion, Bildverarbeitung für die Medizin, 2012, p.304-309

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2011

R. L. Duschka, P. Bischoff, Y. M. Levakhina, P. Hunold, T. M. Buzug, L. C. Busch, J. Barkhausen, F. M. Vogt: Tomosynthesis - The revival of an imaging tool for musculoskeletal applicationsn, ECR 2011 - European Congress of Radiology, Wien, Austria, 2011, p.C-1895

R. L. Duschka, Y. M. Levakhina, T. M. Buzug, P. Hunold, J. Barkhausen, F. M. Vogt: Tomosynthesis: A Long Forgotten Imaging Tool becomes a Fierce Competitor to CR in Follow-up Examinations of Pathologies in Hands, RSNA - 97th Scientific Assembly and Annual Meeting, Chicago, 2011, p.LL-MKS-TU2A

Y. M. Levakhina, B. Kratz, R. L. Duschka, F. Vogt, J. Barkhausen, T. M. Buzug: Reconstruction for Musculoskeletal Tomosynthesis: a Comparative Study using Image Quality Assessment in Image and Projection Domain, Proc. IEEE Nuc. Sci. Symp. Med. Im. Conf., 2011, p.2569-2571

M. Kleine, J. Hamer, T. M. Buzug: Sparse recovery for SPECT imaging of inflammation at implants, Proceedings Medizinische Physik 2011, 2011, p.64

C. Kaethner, B. Kratz, S. Ens, T. M. Buzug: No-Reference Quality Assessment for CT-Images, Biomed Tech, 2011, 56, Suppl. 1, DOI 10.1515/BMT.2011.246

S. Ens, B. Kratz, T. M. Buzug: Metric-Based Estimation of Movement Positions in Cone-Beam CT, Biomedical Engineering, ISSN 0939-4990, 2011, 56

J. Hamer, M. Kleine, S. Barendt, J. Krajewski, J. Konitzer, E. Gáspár, Meller, J. Knobloch, M. Russlies, I. Buchmann, J. Barkhausen, J. Modersitzki, G. Ebel, T. M. Buzug: Molecular Imaging of Inflammations at Implant Interfaces (M4I) - Part of Molecular Imaging North Competence Center (MOIN CC), Biomed Tech, 2011, 56, Suppl.1, DOI 10.1515/BMT.2011.299

Y. M. Levakhina, R.L. Duschka, J. Barkhausen, T. M. Buzug: Digital Tomosynthesis of Hands using Simultaneous Algebraic Reconstruction Technique with Distance Driven Projector, 11th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, 2011, p.167-170

B. Kratz, S. Ens, J. Müller, T. M. Buzug: Reference-free ground truth metric for metal artifact evaluation in CT images, Medical Physics, 2011, 38, 7, p.4321-4328

C. Kaethner, B. Kratz, S. Ens, T. M. Buzug: Referenzlose Qualitätsbestimmung von CT-Bildern, Bildverarbeitung für die Medizin, 2011, Springer Verlag, Berlin, Heidelberg, p.439 - 443

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2010

S. Ens, J.Ulrici, E. Hell, T. M. Buzug: Automatic Motion Correction in Cone-Beam Computed Tomography, Proc. IEEE Nuc. Sci. Symp. Med. Im. Conf., 2010

R. L. Duschka, Y. M. Levakhina, L. C. Busch, P. Hunold, T. M. Buzug, J. Barkhausen, F. M. Vogt: Tomosynthese zur Beurteilung des Handskeletts - technische Möglichkeiten und klinisches Potenzial, Fortschr Rontgenstr, 2010, 182, p.A25

Y. M. Levakhina, B. Kratz, T. M. Buzug: Two-Step Metal Artifact Reduction Using 2D-NFFT and Spherically Symmetric Basis Functions, Proc. IEEE Nuc. Sci. Symp. Med. Im. Conf., 2010, p.3343-3345

Y. M. Levakhina, T. M. Buzug: Distance Driven Projection and Backprojection for Spherically Symmetric Basis Functions, Proc. IEEE Nuc. Sci. Symp. Med. Im. Conf., 2010, p.2894-2897

S. Ens, B. Kratz, T. M. Buzug: Automatische Beurteilung von Artefakten in tomographischen Bilddaten, Biomed Tech, 2010, Rostock, Germany, 5, p.p.BMT.2010.550

S. Ens, J.Ulrici, E. Hell, T. M. Buzug: Automatic Detection of Patient Motion in Cone-Beam Computed Tomography, IEEE International Symposium on Biomedical Imaging: From Nano to Macro, 2010

I. Graesslin, S. Wang, S. Biederer, G. Mens, B. Annighoefer, H. Homann, J. Duyn, P. Harvey: Towards Patient-Specific SAR Calculation for Parallel Transmission Systems, Proceedings of the International Society for Magnetic Resonance in Medicine, 2010, Mai, Stockholm, 18, p.3873

B. Kratz, M. Oehler, T. M. Buzug: Vorwissensbasierte NFFT zur CT-Metallartefaktreduktion, Bildverarbeitung für die Medizin, 2010, Aachen, Springer, p.122-126

Stille, Maik, Finke, Markus: Combination of a Robotic Surgical Microscope and an Augmented Reality for Intraoperative Navigation, In Proceedings BMT2010, 44. Jahrestagung der Deutschen Gesellschaft für Biomedizinische Technik (DGBMT), 2010

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2009

B. Kratz, T. M. Buzug: Metal Artifact Reduction in Computed Tomography Using Nonequispaced Fourier Transform, Proc. IEEE Nuc. Sci. Symp. Med. Im. Conf., 2009, p.2720-2723

B. Kratz, T. M. Buzug: Metallartefakte in der Computertomographie. Softwarebasierte Ansätze zur Artefaktreduktion, 39. Jahrestagung der Gesellschaft für Informatik, Lecture Notes in Informatics (LNI), 2009, September, Lübeck, p.1213-1222

S. Ens, T. M. Buzug: Automatische Detektion von abrupten Patientenbewegungen in der Cone-Beam-Computertomographie, Lect Notes Inf, 2009, September, Lübeck, p.1223-1232

Y. M. Levakhina, T. M. Buzug: Algebraic Reconstruction Versus Statistical Reconstruction Methods in CT, World Congress on Medical Physics and Biomedical Engineering, Springer IFMBE Series, 2009, September, Munich, 25/Post-Deadline Poster 37

Y. M. Levakhina, S. A. Gonchukov: Confocal Microscopy Based on Injection of Reflected Irradiation, World Congress on Medical Physics and Biomedical Engineering, Springer IFMBE Series, 2009, September, Munich, 25/II, p.883–885

S. Ens, R. Bruder, J. Ulrici, E. Hell, T. M. Buzug: A Validation Framework for Head-Motion Artifacts in Dental Cone-Beam CT, World Congress on Medical Physics and Biomedical Engineering, Springer IFMBE Series, 2009, September, Munich, 25/II, p.658–661

B. Kratz, M. Oehler, T.M. Buzug: On Limitations of 1D Interpolation-Based Metal Artefact Reduction Approaches - A Comparison of FBP versus MLEM, World Congress on Medical Physics and Biomedical Engineering, 2009, IFMBE Springer Series, 25/II, p.398-401

B. Kratz, T. M. Buzug: Metallartefakte in der Computertomographie - Softwarebasierte Ansätze zur Artefaktreduktion, 39. Jahrestagung der Gesellschaft für Informatik, Lecture Notes in Informatics (LNI), 2009, p.1213-1220

S. Ens, T. M. Buzug: Automatische Detektion von abrupten Patientenbewegungen in der Cone-Beam-Computertomographie, 39. Jahrestagung der Gesellschaft für Informatik, Lecture Notes in Informatics (LNI), 2009, p.1223-1230

J. Müller, T. M. Buzug: Spurious Structures Created by Interpolation-Based CT Metal Artifact Reduction, SPIE Symposium on Medical Physics, 2009, February, Orlando, Florida, 72581Y, p.1-10

Finke, Markus, Meyer, Tobias, Stille, Maik, Schweikard, Achim: Automatic Positioning of a Surgical Microscope, 39. GI Jahrestagung, 2009, Bonner Köllen, 154, p.998-1009

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2008

M. Oehler, T. M. Buzug: Sinogram Inpainting for Metal Artifact Reduction in CT Images, Proc. 4th European Congress for Medical and Biomedical Engineering, Springer IFMBE Series, 2008, 22, p.651-654

B. Kratz, M. Oehler, T. Knopp, S. Ens, T. M. Buzug: CT-MAR-Reconstruction using Non-Uniform Fourier Transform, Proc. 4th European Congress for Medical and Biomedical Engineering, Springer IFMBE Series, 2008, 22, p.861–865

S. Ens, J. Müller, B. Kratz, T. M. Buzug: Sinogram-Based Motion Detection in Transmission Computed Tomography, Proc. 4th European Congress for Medical and Biomedical Engineering, Springer IFMBE Series, 2008, 22, p.505–508

M. Oehler, B. Kratz, T. Knopp , J. Müller, T. M. Buzug: Evaluation of Surrogate Data Quality in Sinogram-Based CT Metal-Artefact Reduction, SPIE Symposium on Optical Engineering - Image Reconstruction from Incomplete Data Conference, 2008, August, San Diego, 7076-07, p.1-10

I. Graesslin, D. Glaesel, S. Biederer, F. Schweser, P. Vernickel, P. Börnert, B. Annighoefer, H. Stahl, H. Dingemans, G. Mens, P. Harvey, U. Katscher: SAR in Parallel Transmission, PIERS Online, 2008, July, Cambridge, 4, p.681-685

I. Graesslin, F. Schweser, B. Annighoefer, S. Biederer, Katscher, K. Nehrke, H. Stahl, H. Dingemans, G. Mens, P. Börnert: A Minimum SAR RF Pulse Design Approach for Parallel Tx with Local Spot Suppression and Exact Fidelity Constraint, Proceedings of the International Society for Magnetic Resonance in Medicine, 2008, Mai, Toronto, 16, p.621

I. Graesslin, D. Glaesel, S. Biederer, P. Vernickel, Katscher, F. Schweser, B. Annighoefer, H. Dingemans, G. Mens, G. v. Yperen, P. Harvey: Comprehensive RF Safety Concept for Parallel Transmission Systems, Proceedings of the International Society for Magnetic Resonance in Medicine, 2008, Mai, Toronto, 16, p.74

B. Kratz, T. Knopp, J. Müller, M. Oehler, T. M. Buzug: Comparison of Nonequispaced Fourier Transform and Polynomial based Metal Artifact Reduction Methods in Computed Tomography, Bildverarbeitung für die Medizin, 2008, Springer, Berlin, p.21-25

J. Müller, T. M. Buzug: Intersection line Length Normalization in CT Projection Data, Bildverarbeitung für die Medizin, 2008, Springer, Berlin, p.77-81

T. M. Buzug: Computed Tomography: From Photon Statistics to Modern Cone-Beam CT, Springer-Verlag, 2008, Berlin/Heidelberg

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2007

M. Oehler, T. M. Buzug: Sinogrammbasierte Strategie zur Metallartefaktunterdrückung für die Transmissions-Computertomographie, J. Biomed. Tech. 52, Suppl., Proc. BMT 2007, ISSN 09394990, Ref. 46923, 2007, Aachen

I. Graesslin, S. Biederer, P. Wilhelm, P. Vernickel, G. Mens, K-H. Zimmermann, U. Katscher, P. Börnert: 3D RF Pulses for Parallel Transmission MRI Systems, Proceedings of the International Society for Magnetic Resonance in Medicine, 2007, Mai, Berlin, 15, p.1688

I. Graesslin, S. Biederer, K. Falaggis, P. Vernickel, Dingemans, G. Mens, P. Roeschmann, C. Leussler, Z. Zhai, M. Morich, U. Katscher: Real-time SAR Monitoring to ensure Patient Safety for Parallel Transmission Systems, Proceedings of the International Society for Magnetic Resonance in Medicine, 2007, Mai, Berlin, 15, p.1086

M. Oehler, T. M. Buzug: Two Step MLEM Algorithm for Artefact Reduction in CT Images, Intern. Journal of Computer Assisted Radiology and Surgery, 2007, 2, 1, p.S38-S41

M. Oehler, T. M. Buzug: The l-MLEM Algorithm: An Iterative Reconstruction Technique for Metal Artifact Reduction in CT Images, Advances in Medical Engineering, Springer Series: Proceedings in Physics 114, 2007, Feb., Springer, Berlin, p.42-47

M. Oehler, T. M. Buzug: Statistical Image Reconstruction for Inconsistent CT Projection Data, Journal of Methods of Information in Medicine, 2007, 3, p.261-269

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2006

M. Oehler, T. M. Buzug: Modified MLEM Algorithm for Artifact Suppression in CT, IEEE Conference NSS-MIC, 2006, San Diego, p.3511-3518

M. Oehler, T. M. Buzug: Gewichtete MLEM-Rekonstruktion zur Artefaktreduktion in der Transmissions-Computertomographie, Proceedings of 37th Annual Meeting DGMP, 2006, Regensburg, p.345-346

M. Oehler, T. M. Buzug: Statistische Bildrekonstruktion zur Behandlung inkonsistenter Projektionsdaten der Computertomographie, Proceedings of the DGBMT Jahrestagung 2006, 2006, Zürich, Schweiz

M. Oehler, T. M. Buzug: Maximum-Likelihood-Ansatz zur Metallartefaktreduktion bei der Computertomographie, Bildverarbeitung für die Medizin, 2006, Mai, Springer, Berlin, p.36-40

M. Oehler, T. M. Buzug: A Sinogram-Based Metal Artifact Suppression Strategy for Transmission Computed Tomography, Geometriebestimmung mit industrieller Computertomographie, PTB-Bericht PTB-F-54, 2007, M. Bartscher (Ed.), Brauschweig, p.255-262

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2005

M. Oehler, S. Weber, P. Musmann, T. M. Buzug: Imaging Concept for a Novel High Resolution ClearPET-Neuro Scanner, Biomedizinische Technik 50, 2005, 1, p.1217-1218

M. Oehler, S. Weber, P. Musmann, T. M. Buzug: Implementation of a Fourier-Rebinning Algorithm for a High-Resolution PET-Scanner, Aktuelle Methoden der Laser- und Medizinphysik, 2005, U. Hartmann et al. (Ed.), VDE-Verlag, Berlin, p.16-21

M. Oehler, S. Weber, P. Musmann, T. M. Buzug: Image Reconstruction based on Fourier-Rebinning for a Novel High Resolution ClearPET-Neuro Scanner, Computer Assisted Radiology, 2005, H. Lemke et al. (Ed.), Elsevier, Amsterdam, p.131-136

M. Oehler, L. Pfaffmann, T. M. Buzug: Artefact Suppression in Computed Tomography using Iterative Reconstruction Methods, Biomedizinische Technik 50, 2005, 1, p.1130-1131

M. Oehler, L. Pfaffmann, T. M. Buzug: Reduction of Metal Artifacts in Computed Tomography, Computer Assisted Radiology, 2005, H. Lemke et al. (Ed.), Elsevier, Amsterdam, p.1310

M. Oehler, T. M. Buzug: CT Artifact Reduction with an Iterative Maximum Likelihood Approach, Computer Aided Surgery around the Head, VDI Fortschritt-Bericht, Reihe 17: Biotechnik/Medizintechnik, 2005, VDI-Verlag, Düsseldorf, p.44

P. Kohns, M. Oehler, T. M. Buzug, G. Kokodi, V. Kuzmihov: New Spatial Resolving Detector for Infrared Laser Radiation, Aktuelle Methoden der Laser- und Medizinphysik, 2005, U. Hartmann, M. Kohl-Bareis, G. Lonsdale, P. Hering, J. Bongartz, T. M. Buzug (Ed.), VDE-Verlag, Berlin, p.300--305

O. Grünwald, M. Oehler, S. Ostrowitzki, U. Altenburger, C. Haller, J. Ruhlmann, T. M. Buzug: An Open-Source System for Radiation Therapy, Aktuelle Methoden der Laser- und Medizinphysik, U. Hartmann (Ed.), p.60--65, VDE-Verlag Berlin, 2005, Berlin

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2003

D. Thomsen, K. Klein, M. Oehler, S. Pfinninger, F. Reich und T. M. Buzug: Computertomographie in der Archäologie, Physikalische Methoden der Laser- und Medizintechnik, VDI Fortschritt-Bericht, Reihe 17: Biotechnik/Medizintechnik, Nr. 231, 2003, VDI-Verlag, Düsseldorf, p.156

Wolters, C. H., Anwander, A., Koch, M. A., Reitzinger, S., Kuhn, M., Svens\ en, M.: Influence of Head Tissue Conductivity Anisotropy on Human EEG and using Fast High Resolution Finite Element Modeling, based on a Parallel Algebraic Multigrid Solver, Forschung und wissenschaftliches Rechnen. Beiträge zum Heinz-Billing-Preis 2001, 2003, Plesser, T., Macho, V., Gesellschaft für wissenschaftliche Datenverarbeitung mbH Göttingen

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1999

M. Stahl, T. Aach, T. M. Buzug, R. Wiemker, U. Neitzel, E. Mueller, J. P. Haas: Rauschrobuste Verbesserung schwacher Strukturen in digitalen Radiographien durch nichtlineare Multiskalen-Filterung, Bildverarbeitung für die Medizin, 1999, Springer Heidelberg, p.21

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1998

M. Breeuwer, J. P. Wadley, H. L. T. de Bliek, J. Buurman P. A. C. Desmedt, P. Gieles, F. A. Gerritsen, N. L. , N. D. Kitchen, B. Velani, D. G. T. Thomas, O. , J. D. Blankensteijn, B. C. Eikelboom, W. P. T. M. , M. A. Viergever, G. P. Penney, R. Gaston, D. L. Hill, C. R. Maurer, D. J. Hawkes, F. Maes, D. Vandermeulen R. Verbeeck, P. Suetens, G. Schmitz, T. M. Buzug, C. Lorenz, J. Sabczynski, J. Weese, W. Zylka, M. H. Kuhn: The EASI project - Improving the effectiveness and quality of image-guided surgery, IEEE Trans Inf Tech Biomed, 1998, 72, p.156-168

M. Breeuwer, H. L. T. de Bliek, P. Desmedt, F. A. Gerritsen D. P. E. Kingsley, D. G. T. Thomas, J. Wadley, T. M. , M. H. Kuhn, J. Sabczynski, G. Schmitz, J. Weese W. Zylka, D. J. Hawkes, D. L. Hill, J. Blankensteijn B. C. Eikelboom, W. P. T. M. Mali, M. A. Viergever, O. Wink: European Applications in Surgical Interventions (EASI) - progress in the years 1996-1997, Computer Assisted Radiology, 1998, p.627

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