Title :
Simulation studies of optical photons in monolithic block scintillators
Author :
Streun, M. ; Al-Kaddoum, R. ; Parl, C. ; Pietrzyk, U. ; Ziemons, K. ; van Waasen, S.
Author_Institution :
Central Inst. for Electron., Forschungszentrum Julich GmbH, Julich, Germany
Abstract :
The interest in PET detectors with monolithic block scintillators is growing. In order to obtain high spatial resolutions dedicated positioning algorithms are required. But even an ideal algorithm can only deliver information which is provided by the detector. In this simulation study we investigated the light distribution on one surface of cuboid LSO scintillators of different size. Scintillators with a large aspect ratio (small footprint and large height) showed significant position information only for a minimum interaction depth of the gamma particle. The results allow a quantitative estimate for a useful aspect ratio.
Keywords :
high energy physics instrumentation computing; positron emission tomography; solid scintillation detectors; GEANT4; PET detector; aspect ratio; cuboid LSO scintillator surface; gamma particle interaction depth; high spatial resolution; monolithic block scintillator; optical photon simulation; position information analysis; Biomedical optical imaging; Logic gates; Optical imaging; Optical reflection; Visualization;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE
Conference_Location :
Valencia
Print_ISBN :
978-1-4673-0118-3
DOI :
10.1109/NSSMIC.2011.6154621
