Point spread functions for a small gamma camera with pinhole collimator

作     者：LIU Shi-Tao, XU Zi-Zong, WANG Zhao-Min, XU Shen-Bo (Department of Modern Physics, University of Science and Technology of China, Hefei 230027) 

作者机构：Department of Modern Physics University of Science and Technology of China Hefei 230027 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2003年第14卷第3期

页      面：195-198页

核心收录：

学科分类：082704[工学-辐射防护及环境保护] 08[工学] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 0703[理学-化学] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Supported by the National Natural Science Foundation of China(10275063) 

主　　题：点扩散函数 γ照相机 针孔准直器 PSF Monte-Carlo仿真 临床诊断 

摘      要：A set of point spread functions (PSF) has been obtained by means of Monte-Carlo simulation for asmall gamma camera with a pinhole collimator of various hole diameters. The FOV (field of view) of the camera isexpended from 45 mm to 70 mm in diameter. The position dependence of the variances of PSF is presented, and theacceptance for the 140 kev gamma rays is explored. A phantom of 70 mm in diameter was experimentally imaged inthe camera with effective FOV of only 45 mm in diameter.