Combined Reconstruction of CT and Nuclear Imaging

Multimodal imaging is the combination of different imaging techniques and making use of their individual advantages to maximize the information obtained by inspecting an object. Computed tomography (CT) on the one hand side is a noninvasive procedure to generate high-resolution structural images, whereas nuclear imaging, as positron emission tomography (PET) and single-photon emission computed tomography (SPECT), illustrates regions with increased physiological activity by injecting a radioactive tracer to the subject. In combination, CT and nuclear imaging provide precise localization of various types of cancer, heart diseases or neurological disorders.

Focus of the research project is the development of a reconstruction strategy to process two raw data sets of the same object from different modalities in one reconstruction formulation and therefore facilitate mutual assistance of both imaging techniques. This should enhance the results with respect to contrast, object boundaries and noise statistics.



2019[ to top ]
  • Schaar, M. and Rafecas, M.: Modelling of Scatter in the System Matrix for 3D PET Image Reconstruction: a Comparative Study, 2019, DOI: 10.1109/nss/mic42101.2019.9059797.
2017[ to top ]
  • Schaar, M., Buzug, T. M. and Rafecas, M.: PET image reconstruction using the Origin Ensemble algorithm and geometric constraints, 549–553, 2017, DOI: 10.1515/cdbme-2017-0115.