Regensburg 2019 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
ST: Fachverband Strahlen- und Medizinphysik
ST 3: Gamma Imaging
ST 3.3: Vortrag
Dienstag, 2. April 2019, 10:45–11:00, Kunsthalle
Single Plane Compton Imaging — •Boyana Deneva1, Katja Roemer1, Guntram Pausch2,3, Andreas Wagner1, Wolfgang Enghardt2,3,5, and Toni Koegler2,3,4 — 1HZDR, Institute of Radiation Physics, Dresden, Germany — 2HZDR, Institute of Radiooncology - OncoRay, Dresden, Germany — 3OncoRay-National Center for Radiation Research in Oncology, Dresden, Germany — 4Technische Universität Dresden, Dresden, Germany — 5German Cancer Consortium (DKTK), partner site Dresden, Germany
The gamma camera and its utilization in SPECT have established themselves as key technologies for radionuclide imaging in nuclear medicine. Despite the advances in the imaging techniques, there are still physical limits to the camera performance manifested mainly by the constant trade-off between spatial resolution and detection efficiency due to the used collimator. To overcome these limitations, the concept of the "Single Plane Compton Imaging" was developed, based on the idea of the "Directional Gamma Radiation Detector". A setup for the investigation of this novel concept was developed at the Helmholtz-Zentrum Dresden - Rossendorf. Based on a GAGG:Ce scintillator array read out by digital silicon photomultipliers, the setup delivers spatial information about activity distributions. Experimental results will be shown acquired with the new setup for energies, relevant for the nuclear medicine. Also, the first results of image reconstruction of an activity distribution using the MLEM method based on experimental data will be presented and compared to predictions obtained from particle transport calculations performed with GEANT4.