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We are constructing a 1 mm3 resolution, high sensitivity breast-specific PET camera, consisting out of 2 imaging heads each built out of many layers of 8×8 arrays of 1×1×1 mm3 LYSO crystals coupled to Position Sensitive Avalanche Photo-Diodes (PSAPDs). This paper investigates the effects of shielding on out-of-field background event rate from highly vascular organs like heart, liver, spleen and brain...
We are constructing a 1 mm3 resolution, high sensitivity PET detector system with depth of interaction capability. The detectors are built from modules comprising LSO crystal arrays coupled to Position Sensitive Avalanche Photodiodes (PSAPDs). The entire system will have 4,608 densely packed dual LSO-PSAPD modules. The performance of the large area (1?1 cm2) PSAPDs in our system depends on bias voltage...
We present measurements and simulation to determine the optimal crystal array parameters for an advanced PET scanner dedicated to breast imaging. We compared LSO versus LYSO arrays, measured different crystal sizes and various surface finishes and array configurations. We conclude that an 8 × 8 array of 1 × 1 × 1 mm3 LYSO crystals with a specular (VM2000) foil on all sides of each individual crystal...
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