TY - GEN
T1 - A study on CZT and scintillator based micro-PETs with Compton Tracing Technology
AU - Yoon, Changyeon
AU - Lee, Wonho
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant (2012-006399 and 2012M2A2A4010292) and BK21Plus (21A20132212094) funded by the Korean government (MEST)
Publisher Copyright:
© 2014 IEEE.
PY - 2016/3/10
Y1 - 2016/3/10
N2 - In this research, we compared the performance of a CZT Compton PET and those of conventional micro-PETs using scintillators in which Compton tracing technology was applied. The conventional micro-PETs used photoelectric interaction only as effective events for PET image reconstruction and their position resolution are limited by the size of a single scintillator voxel. The CZT Compton PET, however, was made of CdZnTe semiconductor which showed high energy and position resolution. In addition, in the case of pixellized CZT detector, the interaction sequence inside the detector can be identified effectively and hence not only photoelectric but also Compton scattering interaction can be useful events for PET image reconstruction. At 511 keV, the probability of Compton scattering is approximately three times larger than that of photoelectric events, which results in high detection efficiency and improved reconstruction image. Based on the detection efficiency and reconstructed image, the performances of PET systems were compared with each other.
AB - In this research, we compared the performance of a CZT Compton PET and those of conventional micro-PETs using scintillators in which Compton tracing technology was applied. The conventional micro-PETs used photoelectric interaction only as effective events for PET image reconstruction and their position resolution are limited by the size of a single scintillator voxel. The CZT Compton PET, however, was made of CdZnTe semiconductor which showed high energy and position resolution. In addition, in the case of pixellized CZT detector, the interaction sequence inside the detector can be identified effectively and hence not only photoelectric but also Compton scattering interaction can be useful events for PET image reconstruction. At 511 keV, the probability of Compton scattering is approximately three times larger than that of photoelectric events, which results in high detection efficiency and improved reconstruction image. Based on the detection efficiency and reconstructed image, the performances of PET systems were compared with each other.
UR - http://www.scopus.com/inward/record.url?scp=84965027088&partnerID=8YFLogxK
U2 - 10.1109/NSSMIC.2014.7431278
DO - 10.1109/NSSMIC.2014.7431278
M3 - Conference contribution
AN - SCOPUS:84965027088
T3 - 2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
BT - 2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
Y2 - 8 November 2014 through 15 November 2014
ER -