TY - GEN
T1 - Evaluation of an LYSO based multi-PMT detector for both positron and single photon imaging usage
AU - Liang, H. C.
AU - Jan, M. L.
AU - Su, J. L.
PY - 2006
Y1 - 2006
N2 - In this research, Characteristics of combination of H8500 PSPMTs to form a larger detection area is studied. A home-made linear divider circuit was built for the merged Signals readout. Borosilicate glasses with several thicknesses (0-5 mm) were chosen for scintillation light sharing in crossover region. The effects of light guide and crossover region on separable crystal size were evaluated. According to the test results, an imaging gamma head with larger crystal block with 89 × 89 mm2 covered area, composed of 2 mm LYSO pixels, was fabricated and tested. Measured performances showed that this imaging head worked fine in both 511 keV and lower energy gamma rays. Through count rate measurements, the influence of 176Lu nature background for single photon imaging was also presented. These results showed that using light sharing and linear resistor chain techniques, combination of PMTs in X,Y directions to build a large area imaging detector is still able to keep the ability of positron and single photons detections. Separable crystal size was 2 mm with 2 mm glass applied for light sharing in current status.
AB - In this research, Characteristics of combination of H8500 PSPMTs to form a larger detection area is studied. A home-made linear divider circuit was built for the merged Signals readout. Borosilicate glasses with several thicknesses (0-5 mm) were chosen for scintillation light sharing in crossover region. The effects of light guide and crossover region on separable crystal size were evaluated. According to the test results, an imaging gamma head with larger crystal block with 89 × 89 mm2 covered area, composed of 2 mm LYSO pixels, was fabricated and tested. Measured performances showed that this imaging head worked fine in both 511 keV and lower energy gamma rays. Through count rate measurements, the influence of 176Lu nature background for single photon imaging was also presented. These results showed that using light sharing and linear resistor chain techniques, combination of PMTs in X,Y directions to build a large area imaging detector is still able to keep the ability of positron and single photons detections. Separable crystal size was 2 mm with 2 mm glass applied for light sharing in current status.
UR - http://www.scopus.com/inward/record.url?scp=38649108207&partnerID=8YFLogxK
U2 - 10.1109/NSSMIC.2006.354264
DO - 10.1109/NSSMIC.2006.354264
M3 - 会议稿件
AN - SCOPUS:38649108207
SN - 1424405610
SN - 9781424405619
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 1896
EP - 1899
BT - 2006 IEEE Nuclear Science Symposium - Conference Record
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2006 IEEE Nuclear Science Symposium, Medical Imaging Conference and 15th International Workshop on Room-Temperature Semiconductor X- and Gamma-Ray Detectors, Special Focus Workshops, NSS/MIC/RTSD
Y2 - 29 October 2006 through 4 November 2006
ER -