TY - GEN
T1 - Exploring the limits of PET resolution with a monolithic scintillator detector
AU - Stoll, S.
AU - Purschke, M.
AU - Schlyer, D. J.
AU - Woody, C. L.
AU - Vaska, P.
AU - Krishnamoorthy, S.
PY - 2010
Y1 - 2010
N2 - We have built and evaluated a gamma-ray imaging detector for PET and simultaneous PET-MRI with the goal of providing sub-mm spatial resolution in all 3 dimensions. It consists of a solid slab of LYSO coupled to arrays of silicon photomultipliers (SiPMs) on both sides. The design is relatively cost-effective because it requires minimal mechanical processing of the scintillator, and because the photosensors are relatively large resulting in a small number of readout channels. Positioning algorithms employed include simple Anger centroid and a unique maximum likelihood approach with a measured system model which was developed for a previous generation APD-based detector. The design and construction of the detector, front-end electronics, data acquisition, and data processing methods are presented. The SiPM arrays are characterized and preliminary measures of energy, timing, and spatial resolution have been obtained, indicating promising performance.
AB - We have built and evaluated a gamma-ray imaging detector for PET and simultaneous PET-MRI with the goal of providing sub-mm spatial resolution in all 3 dimensions. It consists of a solid slab of LYSO coupled to arrays of silicon photomultipliers (SiPMs) on both sides. The design is relatively cost-effective because it requires minimal mechanical processing of the scintillator, and because the photosensors are relatively large resulting in a small number of readout channels. Positioning algorithms employed include simple Anger centroid and a unique maximum likelihood approach with a measured system model which was developed for a previous generation APD-based detector. The design and construction of the detector, front-end electronics, data acquisition, and data processing methods are presented. The SiPM arrays are characterized and preliminary measures of energy, timing, and spatial resolution have been obtained, indicating promising performance.
UR - https://www.scopus.com/pages/publications/79960300927
U2 - 10.1109/NSSMIC.2010.5874396
DO - 10.1109/NSSMIC.2010.5874396
M3 - Conference contribution
SN - 9781424491063
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 3210
EP - 3213
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 -