Title :
Testing 144- and 256-crystal BGO block detectors
Author :
Rogers, Joel G. ; Nutt, Ronald ; Andreaco, Mark ; Williams, C.W.
Author_Institution :
TRIUMF, Vancouver, BC, Canada
fDate :
31 Oct-6 Nov 1993
Abstract :
New block detectors have been fabricated incorporating large numbers of small crystals. The authors evaluate and compare the performance of the new detectors with a standard 64-crystal block detector from Siemens-CTI. The new detectors demonstrate greatly improved imaging capability for 511 keV gamma rays. Future PET tomographs incorporating such detectors should produce substantially better volume images with little increase in tomograph manufacturing costs. The detectors will require a new type of automatic calibration procedure. Various such procedures have been tested and are discussed. A technique using higher energy gamma rays has shown special promise
Keywords :
biomedical equipment; bismuth compounds; gamma-ray detection; positron emission tomography; solid scintillation detectors; 144-crystal BGO block detector; 256-crystal BGO block detector; 511 keV; Siemens-CTI; automatic calibration procedure; higher energy gamma rays; medical diagnostic imaging; medical instrumentation; nuclear medicine; standard 64-crystal block detector; tomograph manufacturing costs; volume images; Calibration; Costs; Crystals; Gamma ray detection; Gamma ray detectors; Gamma rays; Manufacturing; Optical imaging; Positron emission tomography; Testing;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1993., 1993 IEEE Conference Record.
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-1487-5
DOI :
10.1109/NSSMIC.1993.373611
