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Evaluation of imaging protocol for ECT based on CS image reconstruction algorithm
Zhou XL(周小林); Yuan MK(贠明凯); Cao XX(曹学香); Zhou, XL; Yun, MK; Cao, XX; Liu, SQ; Wang, L; Huang, XC; Wei, L; Liu SQ(刘双全); Wang L(王璐); Huang XC(黄先超); Wei L(魏龙)
2014
发表期刊CHINESE PHYSICS C
卷号38期号:4页码:48201
摘要Single-photon emission computerized tomography and positron emission tomography are essential medical imaging tools, for which the sampling angle number and scan time should be carefully chosen to give a good compromise between image quality and radiopharmaceutical dose. In this study, the image quality of different acquisition protocols was evaluated via varied angle number and count number per angle with Monte Carlo simulation data. It was shown that, when similar imaging counts were used, the factor of acquisition counts was more important than that of the sampling number in emission computerized tomography. To further reduce the activity requirement and the scan duration, an iterative image reconstruction algorithm for limited-view and low-dose tomography based on compressed sensing theory has been developed. The total variation regulation was added to the reconstruction process to improve the signal to noise Ratio and reduce artifacts caused by the limited angle sampling. Maximization of the maximum likelihood of the estimated image and the measured data and minimization of the total variation of the image are alternatively implemented. By using this advanced algorithm, the reconstruction process is able to achieve image quality matching or exceed that of normal scans with only half of the injection radiopharmaceutical dose.
关键词ECT imaging protocol compressed sensing total variation
学科领域Physics
DOI10.1088/1674-1137/38/4/048201
收录类别SCI
WOS记录号WOS:000333547500022
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224921
专题核技术应用研究中心
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GB/T 7714
Zhou XL,Yuan MK,Cao XX,et al. Evaluation of imaging protocol for ECT based on CS image reconstruction algorithm[J]. CHINESE PHYSICS C,2014,38(4):48201.
APA 周小林.,贠明凯.,曹学香.,Zhou, XL.,Yun, MK.,...&魏龙.(2014).Evaluation of imaging protocol for ECT based on CS image reconstruction algorithm.CHINESE PHYSICS C,38(4),48201.
MLA 周小林,et al."Evaluation of imaging protocol for ECT based on CS image reconstruction algorithm".CHINESE PHYSICS C 38.4(2014):48201.
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