Experimental studies on few-view reconstruction for high-resolution micro-CT

被引:16
|
作者
Sen Sharma, Kriti [1 ]
Jin, Xin [2 ]
Holzner, Christian [3 ]
Narayanan, Shree [1 ]
Liu, Baodong [4 ]
Wang, Dong [5 ]
Agah, Masoud [1 ]
Wang, Libing [5 ]
Yu, Hengyong [4 ]
Wang, Ge [6 ]
机构
[1] Virginia Tech, Dept Elect & Comp Engn, Blacksburg, VA USA
[2] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
[3] Xradia Inc, Pleasanton, CA USA
[4] Wake Forest Univ Hlth Sci, VT WFU Sch Biomed Engn & Sci, Biomed Imaging Div, Winston Salem, NC USA
[5] Virginia Tech, Dept Civil & Environm Engn, Blacksburg, VA USA
[6] Rensselaer Polytech Inst, Biomed Imaging Ctr, Troy, NY USA
关键词
Few-view reconstruction; micro-CT; compressed sensing; TV minimization; SART-TV; COMPUTED-TOMOGRAPHY; IMAGE-RECONSTRUCTION; FAN-BEAM; ALGORITHM;
D O I
10.3233/XST-130364
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
High-resolution micro-CT offers 3D non-destructive imaging but scan times are prohibitively large in many cases. Advancements in image reconstruction offer great reduction in number of views while maintaining reconstruction accuracy; yet filtered back projection remains the de facto standard. An extensive study of few-view reconstruction using compressed-sensing based iterative techniques is carried out. Also, a novel 3D micro-CT phantom is proposed, and used for analyzing reconstruction accuracy. Numerical tests, and studies on real micro-CT data show that if measurement noise in projections is not extremely high, the number of views may be reduced to 1/8th of the typically acquired view numbers. The study motivates the adoption of advanced reconstruction techniques to allow faster scanning, lower dosage, and reduced data size in high-resolution micro-CT.
引用
收藏
页码:25 / 42
页数:18
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