From Event: SPIE Optical Engineering + Applications, 2017
We are building a dual-panel positron emission tomography (PET) system prototype that enables focused imaging of local regions of interest of the body with 1 mm3 spatial resolution, The detector panels are built from novel 3D position sensitive scintillation (3DPSS) detectors comprising arrays of 1x1x1 mm3 LYSO scintillation crystal elements coupled to position-sensitive avalanche photodiodes (PSAPD). At the present state of system construction, the measured energy resolution over 98,304 crystal elements coupled to 1,536 PSAPDs is 11.34%, and 76.2% (74,938) of the system LYSO crystal elements are found to have greater than 99% event positioning accuracy. Imaging studies performed with a high-resolution phantom demonstrate resolution of the smallest (1.2 mm diameter) features. Besides enabling 1 mm resolution clinical PET studies, we describe other novel ways we are planning to exploit the 3DPSS detector information.
David Hsu, David Freese, Derek Innes, and Craig S. Levin, "3D position-sensitive scintillation detectors for a high-resolution loco-regional PET imaging system (Conference Presentation)," Proc. SPIE 10393, Radiation Detectors in Medicine, Industry, and National Security XVIII, 103930O (Presented at SPIE Optical Engineering + Applications: August 10, 2017; Published: 19 September 2017); https://doi.org/10.1117/12.2279354.5581168722001.
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