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

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HUANG Xian-Chao, ZHANG Zhi-Ming, LI Dao-Wu, TANG Hao-Hui, LI Ting, LIAO Yan-Fei, LIU Jun-Hui, WANG Pei-Lin, CHEN Yan, WANG Ying-Jie, WEI Long, SHAN Bao-Ci and WANG Bao-Yi. Performance evaluation of a parallel-hole collimated detector module for animal SPECT imaging[J]. Chinese Physics C, 2011, 35(12): 1162-1165. doi: 10.1088/1674-1137/35/12/016
HUANG Xian-Chao, ZHANG Zhi-Ming, LI Dao-Wu, TANG Hao-Hui, LI Ting, LIAO Yan-Fei, LIU Jun-Hui, WANG Pei-Lin, CHEN Yan, WANG Ying-Jie, WEI Long, SHAN Bao-Ci and WANG Bao-Yi. Performance evaluation of a parallel-hole collimated detector module for animal SPECT imaging[J]. Chinese Physics C, 2011, 35(12): 1162-1165.  doi: 10.1088/1674-1137/35/12/016 shu
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Received: 2011-01-24
Revised: 2011-03-09
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Performance evaluation of a parallel-hole collimated detector module for animal SPECT imaging

    Corresponding author: WANG Bao-Yi,

Abstract: 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 × 80 mm. The detector is composed of a NaI scintillation crystal array coupled to four H8500 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.

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