A simplified approach for computed tomography with an X-ray grating interferometer

被引：29

作者：

Diemoz, P. C. ^{[1
,2
]}

Coan, P. ^{[1
,2
,3
]}

Zanette, I. ^{[1
]}

Bravin, A. ^{[1
,2
]}

Lang, S. ^{[5
]}

Glaser, C. ^{[2
,4
]}

Weitkamp, T. ^{[1
,6
]}

机构：

[1] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[2] Univ Munich, Munich Ctr Adv Photon, Munich, Germany

[3] Univ Munich, Fac Med, D-81377 Munich, Germany

[4] Univ Munich, Inst Klin Radiol, D-81377 Munich, Germany

[5] Univ Basel, Biomat Sci Ctr, CH-4031 Basel, Switzerland

[6] LOrme Merisiers, Synchrotron Soleil, F-91192 Gif Sur Yvette, France

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 03期

关键词：

PHASE TOMOGRAPHY; CONTRAST;

D O I：

10.1364/OE.19.001691

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a simplified acquisition and processing method for Xray grating interferometry computed tomography (CT). The proposed approach eliminates the need to scan the gratings, thus allowing for a faster CT acquisition compared to methods presently in use. The contrast in the reconstructed images can be expressed as a linear combination of the absorption and refraction within the sample. Experimental images of a test phantom made of known materials and a human bone-cartilage sample prove the correctness of the method and show very good agreement with the theory. The here proposed approach might be highly interesting in many fields where a reduced imaging acquisition time is requested and/or where the radiation dose delivered to the sample has to be kept low, such as, for example, in in-vivo imaging. (C) 2011 Optical Society of America

引用

页码：1691 / 1698

页数：8

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