CAS OpenIR  > 中科院上海应用物理研究所2004-2010年
Performance comparison of subtractive resistive readout with conventional resistive readout for a high-resolution compact gamma camera
Qi, YJ(漆玉金); Zhang, MJ; Zhao, CL(赵翠兰); Wojcik, RF
2007
Conference NameIEEE Nuclear Science Symposium/Medical Imaging Conference
Source Publication2007 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD, VOLS 1-11
Pages3725
Conference DateOCT 26-NOV 03, 2007
Conference PlaceHonolulu, HI
AbstractThe purpose of this study was to investigate an optimal readout for a high-resolution compact gamma camera with maximum performance in crystal element identifications. The compact camera is based on a pixellated NaI(Tl) crystal with 1.2mm pixel size coupled to a 5'' Hamamatsu R3292 PSPMT. A conventional resistive-chain readout was initially developed for the camera. Then a novel subtractive resistive readout developed was utilized to optimize the performance of the camera. The performance of the camera was evaluated by raw flood images of a (CS)-C-137 source. The results show that the conventional resistive readout results in a significant shrinkage of the useful field-of-view (UFOV) of the detector with a maximum of resolvable crystal elements of 64x64, which is about 89% of the active-area of the PSPMT's (similar to 10cm). The subtractive resistive readout can maximize the crystal element identifications up to 71x71 while improve the UFOV of the detector up to almost the full active area of the PSPMT's. In the central region of the camera, the subtractive resistive readout also improve the peak-valley ratio of the crystal elements from 1.5:1 to 2:1 as compared the conventional resistive readout. The phantom and in vivo mouse imaging studies demonstrate that the compact camera with subtractive resistive readout can provide very good performance for high-resolution SPECT. We concluded that the subtractive resistive readout is an effective approach for an optimal readout for the development of high-resolution compact gamma cameras.
ISSN1082-3654
ISBN978-1-4244-0922-8
Indexed BySCI
Funding Project应物所课题组
Language英语
Document Type会议论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/8879
Collection中科院上海应用物理研究所2004-2010年
Recommended Citation
GB/T 7714
Qi, YJ,Zhang, MJ,Zhao, CL,et al. Performance comparison of subtractive resistive readout with conventional resistive readout for a high-resolution compact gamma camera[C],2007:3725.
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