Position sensitive APDs for small animal PET imaging
Position sensitive APDs for small animal PET imaging
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DOI：
10.1109/tns.2003.823012
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发表时间：
2004-02-01
影响因子：
1.8
通讯作者：
Cherry, SR
中科院分区：
文献类型：
--
作者：
Shah, KS;Grazioso, R;Cherry, SR
本文报道了用位置灵敏雪崩光电二极管(PSAPD)作为光学探测器读出高分辨率PET组件中LSO的分段闪烁阵列的研究。用LSO单晶和阵列表征了8×8 mm(2)和14×14转2圈面积的PSAPD。与1×1×20 mm(3)LSO探测器耦合的PSAPD对511keV伽马射线的能量分辨率为19%(半高宽)，符合时间分辨率接近3 ns(半高宽)。通过将多元素LSO阵列(1 mm像素，20 mm高)耦合到PSAPD，成功地进行了洪水直方图研究。最后，交互深度(DOI)分辨率
In this paper, investigation of position sensitive avalanche photodiodes (PSAPDs) as optical detectors for reading out segmented scintillation arrays of LSO in high resolution PET modules is reported. PSAPDs with 8 x 8 mm(2) and 14 x 14 Turn 2 area have been characterized with single LSO crystals and arrays. Energy resolution of 19% (FWHM) for 511 keV gamma-rays and coincidence timing resolution of similar to3 ns (FWHM) have been recorded with PSAPD coupled to 1 x I x 20 mm(3) LSO detectors. Flood histogram studies have been successfully conducted by coupling multi-element element LSO arrays (1 mm pixels, 20 mm tall) to the PSAPDs. Finally, depth of interaction (DOI) resolution of