Title :
Optimization of optical coupling conditions for LSO/LuYAP phoswich detector
Author :
Jung, Jin Ho ; Choi, Yong ; Chung, Yong Hyun ; Devroede, Olivier ; Krieguer, Magalie ; Bruyndonckx, Peter ; Tavernier, Stefaan
Author_Institution :
Dept. of Nucl. Med., Sung Kyun Kwan Univ., Seoul
Abstract :
Phoswich detectors consisting of LSO and LuYAP for small animal PET have been developed to measure the depth of interaction (DOI) and to improve spatial resolution. The aim of this study was to characterize the optical coupling condition between phoswich crystal and photomultiplier tube (PMT) and between LSO and LuYAP to improve the performance of LSO/LuYAP phoswich detector. Light yields and DOI measurement errors of the phoswich detector with various optical coupling conditions were investigated by simulation and experiment. Additionally, the effects of inserted materials between LSO and LuYAP crystals with various ratios of coverage and surface conditions on PET performance were investigated
Keywords :
gamma-ray detection; optical couplers; photomultipliers; positron emission tomography; solid scintillation detectors; LSO; LuYAP; depth of interaction; optical coupling condition; phoswich detectors; photomultiplier tube; small animal PET; spatial resolution; surface conditions; Animals; Crystalline materials; Crystals; Measurement errors; Optical coupling; Optical detectors; Optical materials; Photomultipliers; Positron emission tomography; Spatial resolution;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2004 IEEE
Conference_Location :
Rome
Print_ISBN :
0-7803-8700-7
Electronic_ISBN :
1082-3654
DOI :
10.1109/NSSMIC.2004.1466309
