Compressed X-ray phase-contrast imaging using a coded source

被引：4
|
作者：
Sung, Yongjin [1 ,2 ]
Xu, Ling [3 ]
Nagarkar, Vivek [4 ]
Gupta, Rajiv [1 ,2 ]
机构：
[1] Massachusetts Gen Hosp, Dept Radiol, Boston, MA 02114 USA
[2] Harvard Univ, Sch Med, Boston, MA 02114 USA
[3] Harvard MIT Div Hlth Sci & Technol, Cambridge, MA 02139 USA
[4] Radiat Monitoring Devices Inc, Watertown, MA 02472 USA
来源：
OPTICS COMMUNICATIONS | 2014年 / 332卷
关键词：
X-ray phase-contrast imaging; Inverse scattering; Coded aperture imaging; Computational imaging; RESTRICTED ISOMETRY PROPERTY; DARK-FIELD; RECONSTRUCTION; INTERFEROMETER; NOISE;
D O I：
10.1016/j.optcom.2014.07.041
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
X-ray phase-contrast imaging (XPCI) holds great promise for medical X-ray imaging with high soft-tissue contrast. Obviating optical elements in the imaging chain, propagation-based XPCI (PB-XPCI) has definite advantages over other XPCI techniques in terms of cost, alignment and scalability. However, it imposes strict requirements on the spatial coherence of the source and the resolution of the detector. In this study, we demonstrate that using a coded X-ray source and sparsity-based reconstruction, we can significantly relax these requirements. Using numerical simulation, we assess the feasibility of our approach and study the effect of system parameters on the reconstructed image. The results are demonstrated with images obtained using a bench-top micro-focus XPCI system. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：370 / 378
页数：9
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