Analytical and experimental determination of signal-to-noise ratio and figure of merit in three phase-contrast imaging techniques

被引：48

作者：

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

Bravin, A. ^{[2
]}

Langer, M. ^{[2
,3
]}

Coan, P. ^{[1
,4
]}

机构：

[1] Univ Munich, Fac Phys, D-85748 Garching, Germany

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

[3] Univ Lyon 1, CREATIS, CNRS UMR5220, INSA Lyon,INSERM U1044, F-69621 Villeurbanne, France

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

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 25期

关键词：

X-RAY SOURCES; GRATING INTERFEROMETER; COMPUTED-TOMOGRAPHY; PROPAGATION; DIFFRACTION; ANALYZER; RETRIEVAL; CRYSTAL;

D O I：

10.1364/OE.20.027670

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a theoretical and experimental comparison of three X-ray phase-contrast techniques: propagation-based imaging, analyzer-based imaging and grating interferometry. The signal-to-noise ratio and the figure of merit are quantitatively compared for the three techniques on the same phantoms and using the same X-ray source and detector. Principal dependencies of the signal upon the numerous acquisition parameters, the spatial resolution and X-ray energy are discussed in detail. The sensitivity of each technique, in terms of the smallest detectable phase shift, is also evaluated. (C) 2012 Optical Society of America

引用

页码：27670 / 27690

页数：21

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