作者机构：
[徐建; 石雄] School of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[徐建; 刘胜; 甘志银] Institute of Microsystem, Huazhong Univ. of Sci. and Technol., Wuhan 430074, China;[徐建; 刘胜; 甘志银] School of Mechanical Science and Engineering, Huazhong Univ. of Sci. and Technol., Wuhan 430074, China
通讯机构：
School of Electrical and Electronic Engineering, Wuhan Polytechnic University, China
作者机构：
[牟怿; 刘纯利] Engineering School, Anhui Science and Technology University, Fengyang 233100, Anhui, China;[周龙] Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan 430023, China
通讯机构：
Engineering School, Anhui Science and Technology University, China
作者机构：
[尤新革; 周龙] Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[牟怿] School of Engineering, Anhui Science and Technology University, Fengyang 233100, Anhui, China
通讯机构：
Department of Electrical and Information Engineering, Wuhan Polytechnic University, China
作者机构：
[陈为真] Department of Information and Electrical Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[汪秉文; 陈为真; 胡晓娅] Department of Control Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
通讯机构：
[Chen, W.-Z.] D;Department of Information and Electrical Engineering, Wuhan Polytechnic University, China
关键词：
Monte-Carlo simulation;Pinhole collimator;Gamma camera;Small field of view;High spatial resolution
摘要：
Needs in scintimammography applications, especially for small animal cardiac imaging, lead to develop a small field of view, high spatial resolution gamma camera with a pinhole collimator. However the ideal pinhole collimator must keep a compromise between spatial resolution and sensitivity. In order to design a pinhole collimator with an optimized sensitivity and spatial resolution, the spatial resolution and the geometric sensitivity response as a function of the source to collimator distance has been obtained by means of Monte-Carlo simulation for a small field of view gamma camera with a pinhole collimator of various-hole diameters. The results show that the camera with pinhole of 1 mm, 1.5 mm and 2 mm diameter has respectively spatial resolution of 1.5 mm, 2.25 mm and 3 mm and geometric sensitivity of 0.016%, 0.022% and 0.036%, while the source to collimator distance is 3 cm. We chose the pinhole collimator with hole diameter size of 1.2 mm for our the gamma camera designed based on the trade-off between sensitivity and resolution.
作者机构：
[王浩] School of Electronic Information, Wuhan University, Wuhan 430079, China;[喻占武; 李锐] State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China;[Zeng, Wu] Department of Electrical Information Engineering, Wuhan Polytechnic University, Wuhan 430023, China
通讯机构：
[Wang, H.] S;School of Electronic Information, Wuhan University, China
作者机构：
[喻占武; 李忠民] Department of Electric Information Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[李忠民] State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
通讯机构：
[Li, Z.-M.] D;Department of Electric Information Engineering, Wuhan Polytechnic University, China
作者机构：
[秦岭; 李智] Department of Electrical and Information, Wuhan Polytechnic University, Wuhan 430023, China;[秦建华] School of Material Engineering, Wuhan Institute of Technology, Wuhan 430070, China
通讯机构：
[Li, Z.] D;Department of Electrical and Information, Wuhan Polytechnic University, China
作者机构：
[周龙] Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[陈绵云] Department of Control Science and Information Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
通讯机构：
Department of Electrical and Information Engineering, Wuhan Polytechnic University, China
作者机构：
[常晓萍; 李智] Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[秦建华] School of Mechanical Engineering, Wuhan Institute of Technology, Wuhan 430070, China
通讯机构：
Department of Electrical and Information Engineering, Wuhan Polytechnic University, China
作者机构：
[秦实宏] Dept. of Electrical and Information Eng., Wuhan Polytechnic University, Wuhan 430023, China;[刘克富; 李劲; 潘垣] Huazhong Univ. of Sci. and Technol., Wuhan 430074, China
通讯机构：
Dept. of Electrical and Information Eng., Wuhan Polytechnic University, China
