Can large-area avalanche photodiodes be used for a clinical PET/MRI block detector?

被引：0
|
作者：
Peng, Hao [1 ]
Olcott, P. D. [1 ]
Spanoudaki, Virginia [1 ]
Levin, Craig S. [1 ]
机构：
[1] Stanford Univ, Dept Radiol, Stanford, CA 94305 USA
来源：
2008 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (2008 NSS/MIC), VOLS 1-9 | 2009年
关键词：
PET DETECTOR; SYSTEM;
D O I：
暂无
中图分类号：
R8 [特种医学]; R445 [影像诊断学];
学科分类号：
1002 ; 100207 ; 1009 ;
摘要：
We are investigating a high resolution, Angerlogic based PET block detector using large-area avalanche photodiodes (LAAPD). Such block detectors will be used in a simultaneous PET/MRI clinical scanner. Using a Monte-Carlo simulation tool, we systemically optimized the detector design taking into account the following factors: the dimensions of the scintillation crystal and the optical diffuser, the surface finish of crystals, the layout of APD arrays, and the signal-to-noise (SNR) of the system. Based on the simulation results, a block detector prototype was built with an 8x8 LYSO crystal array (crystal pitch size: 2.75 x 3.00 x 20 mm(3)) coupled to four APDs. The performance of the block detector with regard to the crystal resolving ability and the energy resolution is reported.
引用
收藏
页码：3948 / 3953
页数：6
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