A laboratory based edge-illumination x-ray phase-contrast imaging setup with two-directional sensitivity

被引：21

作者：

Kallon, Gibril K. ^{[1
]}

Wesolowski, Michal ^{[2
]}

Vittoria, Fabio A. ^{[1
]}

Endrizzi, Marco ^{[1
]}

Basta, Dario ^{[1
]}

Millard, Thomas P. ^{[1
]}

Diemoz, Paul C. ^{[1
]}

Olivo, Alessandro ^{[1
]}

机构：

[1] UCL, Dept Med Phys & Biomed Engn, London WC1E 6BT, England

[2] Univ Saskatchewan, Dept Med Imaging, Saskatoon, SK S7N 0W8, Canada

来源：

APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 20期

基金：

英国工程与自然科学研究理事会; 英国科学技术设施理事会;

关键词：

ABSORPTION; RETRIEVAL; REFRACTION;

D O I：

10.1063/1.4935983

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on a preliminary laboratory based x-ray phase-contrast imaging system capable of achieving two-directional phase sensitivity, thanks to the use of L-shaped apertures. We show that in addition to apparent absorption, two-directional differential phase images of an object can be quantitatively retrieved by using only three input images. We also verify that knowledge of the phase derivatives along both directions allows for straightforward phase integration with no streak artefacts, a known problem common to all differential phase techniques. In addition, an analytical method for 2-directional dark field retrieval is proposed and experimentally demonstrated. (c) 2015 Author(s).

引用

页数：5

共 37 条

[31] Two-dimensional gratings-based phase-contrast imaging using a conventional x-ray tube [J].

Sato, Genta ;

Kondoh, Takeshi ;

Itoh, Hidenosuke ;

Handa, Soichiro ;

Yamaguchi, Kimiaki ;

Nakamura, Takashi ;

Nagai, Kentaro ;

Ouchi, Chidane ;

Teshima, Takayuki ;

Setomoto, Yutaka ;

Den, Toru .

OPTICS LETTERS, 2011, 36 (18) :3551-3553

[32] On the possibilities of x-ray phase contrast microimaging by coherent high-energy synchrotron radiation [J].

Snigirev, A ;

Snigireva, I ;

Kohn, V ;

Kuznetsov, S ;

Schelokov, I .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1995, 66 (12) :5486-5492

[33] X-ray phase imaging with a grating interferometer [J].

Weitkamp, T ;

Diaz, A ;

David, C ;

Pfeiffer, F ;

Stampanoni, M ;

Cloetens, P ;

Ziegler, E .

OPTICS EXPRESS, 2005, 13 (16) :6296-6304

[34] Single-shot x-ray differential phase-contrast and diffraction imaging using two-dimensional transmission gratings [J].

Wen, Harold H. ;

Bennett, Eric E. ;

Kopace, Rael ;

Stein, Ashley F. ;

Pai, Vinay .

OPTICS LETTERS, 2010, 35 (12) :1932-1934

[35] Radiation dose efficiency comparison between differential phase contrast CT and conventional absorption CT [J].

Zambelli, Joseph ;

Bevins, Nicholas ;

Qi, Zhihua ;

Chen, Guang-Hong .

MEDICAL PHYSICS, 2010, 37 (06) :2473-2479

[36] Speckle-Based X-Ray Phase-Contrast and Dark-Field Imaging with a Laboratory Source [J].

Zanette, I. ;

Zhou, T. ;

Burvall, A. ;

Lundstrom, U. ;

Larsson, D. H. ;

Zdora, M. ;

Thibault, P. ;

Pfeiffer, F. ;

Hertz, H. M. .

PHYSICAL REVIEW LETTERS, 2014, 112 (25)

[37] Two-Dimensional X-Ray Grating Interferometer [J].

Zanette, Irene ;

Weitkamp, Timm ;

Donath, Tilman ;

Rutishauser, Simon ;

David, Christian .

PHYSICAL REVIEW LETTERS, 2010, 105 (24)

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