Investigation of high resolution compact gamma camera module based on a continuous scintillation crystal using a novel charge division readout method

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2004-2010年

	Investigation of high resolution compact gamma camera module based on a continuous scintillation crystal using a novel charge division readout method
	Dai, QS ; Zhao, CL ; Zhang, HL ; Qi, YJ
刊名	CHINESE PHYSICS C
	2010
卷号	34 期号:8 页码:5
关键词	compact gamma camera module truncated center-of-gravity method image shrinkage effect
ISSN号	1674-1137
通讯作者	Dai, QS (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
英文摘要	The objective of this study is to investigate a high performance and lower cost compact gamma camera module for a multi-head small animal SPECT system. A compact camera module was developed using a thin Lutetium Oxyorthosilicate (LSO) scintillation crystal slice coupled to a Hamamatsu H8500 position sensitive photomultiplier tube (PSPMT). A two-stage charge division readout board based on a novel subtractive resistive readout with a truncated center-of-gravity (TCOG) positioning method was developed for the camera. The performance of the camera was evaluated using a flood (99m)Tc source with a four-quadrant bar-mask phantom. The preliminary experimental results show that the image shrinkage problem associated with the conventional resistive readout can be effectively overcome by the novel subtractive resistive readout with an appropriate fraction subtraction factor. The response output area (ROA) of the camera shown in the flood image was improved up to 34%, and an intrinsic spatial resolution better than 2 mm of detector was achieved. In conclusion, the utilization of a continuous scintillation crystal and a flat-panel PSPMT equipped with a novel subtractive resistive readout is a feasible approach for developing a high performance and lower cost compact gamma camera.
学科主题	Physics
收录类别	SCI
语种	英语
WOS记录号	WOS:000280656400021
公开日期	2012-04-11
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/6947]
专题	上海应用物理研究所_中科院上海应用物理研究所2004-2010年
推荐引用方式 GB/T 7714	Dai, QS,Zhao, CL,Zhang, HL,et al. Investigation of high resolution compact gamma camera module based on a continuous scintillation crystal using a novel charge division readout method[J]. CHINESE PHYSICS C,2010,34(8):5.
APA	Dai, QS,Zhao, CL,Zhang, HL,&Qi, YJ.(2010).Investigation of high resolution compact gamma camera module based on a continuous scintillation crystal using a novel charge division readout method.CHINESE PHYSICS C,34(8),5.
MLA	Dai, QS,et al."Investigation of high resolution compact gamma camera module based on a continuous scintillation crystal using a novel charge division readout method".CHINESE PHYSICS C 34.8(2010):5.