交叉条带伽马射线探测器的数据处理策略

Data-Processing Strategies for Crossed-Strip Gamma-Ray Detectors.

作者信息

Durko Heather L, McDonald Benjamin S, Shokouhi Sepideh, Furenlid Lars R, Barrett Harrison H, Peterson Todd E

机构信息

Center for Gamma-Ray Imaging, College of Optical Sciences at the University of Arizona, Tucson, AZ 85724 USA.

Institute of Imaging Science, Department of Radiology and Radiological Sciences and the Department of Physics and Astronomy at Vanderbilt University, Nashville, TN 37232 USA.

出版信息

IEEE Nucl Sci Symp Conf Rec (1997). 2008 Oct;2008:4091-4094. doi: 10.1109/NSSMIC.2008.4774181.

DOI:10.1109/NSSMIC.2008.4774181

PMID:26778912

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4712960/

Abstract

Crossed-strip gamma-ray detectors are an attractive option for small-animal SPECT imagers due to their high space-bandwidth product. In systems with independent triggering of the two sides of the detector, advanced data-processing techniques are required to accurately determine gamma-ray interaction locations and energy deposition. Optimal detector operation further relies on rigorous detector characterization in order to achieve detector triggering uniformity and best timing resolution and to permit position and energy estimation with maximum-likelihood methods. We describe algorithms and methods developed for calibrating and characterizing a recently fabricated system based on 1024-strips-per-side 1-mm-thick silicon detectors.

摘要

交叉条带伽马射线探测器因其高空间带宽积，是小型动物单光子发射计算机断层显像（SPECT）成像仪的一个有吸引力的选择。在探测器两侧独立触发的系统中，需要先进的数据处理技术来准确确定伽马射线相互作用位置和能量沉积。最佳探测器操作进一步依赖于严格的探测器特性描述，以实现探测器触发均匀性和最佳时间分辨率，并允许使用最大似然方法进行位置和能量估计。我们描述了为校准和表征一个最近制造的基于每侧1024条、厚度为1毫米的硅探测器的系统而开发的算法和方法。