TY - GEN
T1 - Coincidence measurement of 350m pitch pixelated CdZnTe detector with LSO PET module
AU - Yin, Yongzhi
AU - Wu, Heyu
AU - Komarov, Sergey
AU - Garson, Alfred
AU - Guo, Qingzhen
AU - Krawczynski, Henric
AU - Meng, Ling Jian
AU - Tai, Yuan Chuan
PY - 2010
Y1 - 2010
N2 - A coincidence detection system between 350m pitch pixelated CZT detector and a LSO-based Inveon PET detector was built up for PET imaging application. Using different trigger mode, we studied how the triggering strategy affects the PET imaging resolution. We obtained 670m at FWHM image resolution for coincidence events detected by CZT central pixel only. If we include coincidence events from CZT double-pixel charge sharing events (while the CZT central pixel still got the biggest signal amplitude), the PET image resolution degrades to 730m FWHM, but the count rate increases 2.5 to 3 times. We estimated the CZT timing property in different coincidence approaches, i.e. triggered by CZT anode signal or LSO signal, based on the electron drift time measurement from one flash ADC system and the measurement of trigger time difference of LSO and CZT signals.
AB - A coincidence detection system between 350m pitch pixelated CZT detector and a LSO-based Inveon PET detector was built up for PET imaging application. Using different trigger mode, we studied how the triggering strategy affects the PET imaging resolution. We obtained 670m at FWHM image resolution for coincidence events detected by CZT central pixel only. If we include coincidence events from CZT double-pixel charge sharing events (while the CZT central pixel still got the biggest signal amplitude), the PET image resolution degrades to 730m FWHM, but the count rate increases 2.5 to 3 times. We estimated the CZT timing property in different coincidence approaches, i.e. triggered by CZT anode signal or LSO signal, based on the electron drift time measurement from one flash ADC system and the measurement of trigger time difference of LSO and CZT signals.
UR - http://www.scopus.com/inward/record.url?scp=79960289768&partnerID=8YFLogxK
U2 - 10.1109/NSSMIC.2010.5874538
DO - 10.1109/NSSMIC.2010.5874538
M3 - Conference contribution
AN - SCOPUS:79960289768
SN - 9781424491063
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 3868
EP - 3872
BT - IEEE Nuclear Science Symposuim and Medical Imaging Conference, NSS/MIC 2010
T2 - 2010 IEEE Nuclear Science Symposium, Medical Imaging Conference, NSS/MIC 2010 and 17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors, RTSD 2010
Y2 - 30 October 2010 through 6 November 2010
ER -