换一批摘要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.
更多相关知识
发布时间
2003-11-07（万方平台首次上网日期，不代表论文的发表时间）
基金项目
国家自然科学基金（10275063）
- 浏览0
- 被引3
- 下载0
相似文献
- 中文期刊
- 外文期刊
- 学位论文
- 会议论文
