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Point spread functions for a small gamma camera with pinhole collimator 被引量：1

Point spread functions for a small gamma camera with pinhole collimator
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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. A set of point spread functions (PSF) has been obtained by means of Monte-Carlo simulation for a small gamma camera with a pinhole collimator of various hole diameters. The FOV (field of view) of the camera is expended from 45 mm to 70 mm in diameter. The position dependence of the variances of PSF is presented, and the acceptance for the 140 keV gamma rays is explored. A phantom of 70 mm in diameter was experimentally imaged in the camera with effective FOV of only 45 mm in diameter.
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)
出处 《Nuclear Science and Techniques》 SCIE CAS CSCD 2003年第3期195-198,共4页 核技术（英文）
基金 Supported by the National Natural Science Foundation of China(10275063)
关键词 点扩散函数 γ照相机 针孔准直器 PSF Monte-Carlo仿真 临床诊断 Gamma camera,Point spread function, Pinhole collimator, Monte-Carlo simulation
分类号 TL816.2 [核科学技术—核技术及应用]
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参考文献8

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同被引文献11

  • 1赵荣椿 等.数字图像处理导论[M].西安：西北工业大学出版社,1996..
  • 2BEKAERT V, BRASSE D. Determination of the analytical point spread function of a pinhole aperture SPt'2CT system[J]:IEEE Nuclear Science Symposium Conference Resord , 2004 : 2565-2569.
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  • 9夏天,张学龙,马军山,程敬海,黄勇.空间相干与入射光子能量对临床类同轴X射线相衬成像影响(英文)[J].光子学报,2011,40(4):627-635. 被引量：4
  • 10郑智捷.在变值测量模拟中的条件概率统计分布[J].光子学报,2011,40(11):1662-1666. 被引量：5

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Nuclear Science and Techniques
2003年 第3期

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