Performance evaluation of a parallel-hole collimated detector module for animal SPECT imaging

被引：2

作者：

Huang Xian-Chao ^{[1
,2
,3
]}

Zhang Zhi-Ming ^{[1
,2
]}

Li Dao-Wu ^{[1
,2
]}

Tang Hao-Hui ^{[1
,2
]}

Li Ting ^{[1
,2
]}

Liao Yan-Fei ^{[1
,2
,3
]}

Liu Jun-Hui ^{[1
,2
,3
]}

Wang Pei-Lin ^{[1
,2
,3
]}

Chen Yan ^{[1
,2
,3
]}

Wang Ying-Jie ^{[1
,2
,3
]}

Wei Long ^{[1
,2
]}

Shan Bao-Ci ^{[1
,2
]}

Wang Bao-Yi ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Key Lab Nucl Analyt Tech, Inst High Energy Phys, Beijing 100049, Peoples R China

[2] Beijing Engn Res Ctr Radiog Tech & Equipment, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

CHINESE PHYSICS C | 2011年 / 35卷 / 12期

关键词：

animal imaging; SPECT parallel-hole collimator; SYSTEM; CAMERA;

D O I：

10.1088/1674-1137/35/12/016

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We have built and investigated a detector module for animal SPECT imaging, especially for use in large field of view (FOV) conditions. The module consists of a PMT-based detector and a parallel-hole collimator with an effective area of 80 mm x 80 mm. The detector is composed of a NaI scintillation crystal array coupled to four 118500 position sensitive photomultiplier tubes (PS-PMT). The intrinsic energy resolution of the detector is 11.5% at 140 keV on average. The planar spatial resolution of the module changes from 2.2 mm to 5.1 mm at different source-to-collimator distances with an unchanged sensitivity of about 34cps/MBq. Additionally, the SPECT Micro Deluxe Phantom imaging was performed with a radius of rotation (ROR) of 40 mm. Using the FBP reconstruction algorithm, a high performance image was obtained, indicating the feasibility of this detector module.

引用

页码：1162 / 1165

页数：4

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