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Fast and accurate computation of system matrix for area integral model-based algebraic reconstruction technique
文献类型:期刊
作者:Zhang, Shunli[1]  Zhang, Dinghua[2]  Gong, Hao[3]  Ghasemalizadeh, Omid[4]  Wang, Ge[5]  Cao, Guohua[6]  
机构:[1]Northwestern Polytechnical University, Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Xi'an, China
[2]Northwestern Polytechnical University, Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Xi'an, China
[3]Virginia Tech-Wake Forest University, School of Biomedical Engineering and Sciences, Blacksburg, VA, United States
[4]Virginia Tech, Department of Mechanical Engineering, Blacksburg, VA, United States
[5]Rensselaer Polytechnic Institute, Department of Biomedical Engineering, Troy, NY, United States
[6]Virginia Tech-Wake Forest University, School of Biomedical Engineering and Sciences, Blacksburg, VA, United States
通讯作者:Cao, GH (reprint author), Virginia Tech Wake Forest Univ, Virginia Tech, Sch Biomed Engn & Sci, Blacksburg, VA 24061 USA.
年:2014
期刊名称:OPTICAL ENGINEERING影响因子和分区
卷:53
期:11
增刊:正刊
学科:工程学
收录情况:SCI(E)(WOS:000347723600036)  EI(20151300695121)  
被引频次:5
人气指数:685
浏览次数:675
基金:Chinese Government Scholarship Program; China Postdoctoral Science Foundation [2011049169]; Institute for Critical Technology and Applied Science at Virginia Tech; NSF [1351936]
关键词:computed tomography; image reconstruction; algebraic reconstruction technique; area integral model; Siddon algorithm
摘要:
Iterative algorithms, such as the algebraic reconstruction technique (ART), are popular for image reconstruction. For iterative reconstruction, the area integral model (AIM) is more accurate for better reconstruction quality than the line integral model (LIM). However, the computation of the system matrix for AIM is more complex and time-consuming than that for LIM. Here, we propose a fast and accurate method to compute the system matrix for AIM. First, we calculate the intersection of each boun ...More
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