Alternative method for differential phase-contrast imaging with weakly coherent hard x rays

Huang, Zhifeng; Kang, Kejun; Zhang, Li; Chen, Zhiqiang; Ding, Fei; Wang, Zhentian; Fang, Qiaoguang

doi:10.1103/physreva.79.013815

Cited by 102 publications

(54 citation statements)

References 23 publications

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“…Applications of XPCI are extremely vast, ranging from biological and medical to security inspection and materials science. Several approaches exist for obtaining phase-contrast images in the X-ray regime, using large-scale synchrotron facilities and more compact X-ray-tube-based equipment [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. The imaging methods, their developments and applications can also be found in recent reviews on the subject [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Absorption, refraction and scattering retrieval with an edge-illumination-based imaging setup

Endrizzi¹,

Olivo²

2014

J. Phys. D: Appl. Phys.

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We have recently developed a new method based on edge-illumination for retrieving a three-image representation of the sample. A minimum of three intensity projections is required in order to retrieve the transmission, refraction and ultra-small-angle scattering properties of the sample. Here we show how the method can be adapted for particular cases in which some degree of a priori information about the sample might be available, limiting the number of required projections to two. Moreover, an iterative algorithm to correct for non-ideal optical elements is proposed and tested on numerical simulations, and finally validated on experimental data.

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Section: Introductionmentioning

confidence: 99%

Absorption, refraction and scattering retrieval with an edge-illumination-based imaging setup

Endrizzi¹,

Olivo²

2014

J. Phys. D: Appl. Phys.

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“…In this regard the edge illumination technique is related to that reported recently by Huang et. al [30] who, contrary to EIXPCI, employ phase stepping and do not make use of edge illumination. On the other hand, EIXPCI was first developed in analogy with ABI [28] due to the manner in which the pixel edge creates sensitivity to the angle of photon refraction.…”

Section: Introductionmentioning

confidence: 99%

A quantitative, non-interferometric X-ray phase contrast imaging technique

Munro¹,

Rigon²,

Ignatyev³

et al. 2013

Opt. Express

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We present a quantitative, non-interferometric, X-ray differential phase contrast imaging technique based on the edge illumination principle. We derive a novel phase retrieval algorithm which requires only two images to be acquired and verify the technique experimentally using synchrotron radiation. The technique is useful for planar imaging but is expected to be important for quantitative phase tomography also. The properties and limitations of the technique are studied in detail.

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“…Alternatively, two absorption elements can be used to directly detect refractive effects. This can reduce the requirements for spatial coherence even further [9][10]. Finally, if the detector has sufficiently high resolution to image fringes directly, a single grating element can be used [11].…”

Section: Introductionmentioning

confidence: 98%

Phase contrast x-ray imaging signatures for homeland security applications

Miller

White

McDonald

et al. 2010

IEEE Nuclear Science Symposuim &Amp; Medical Imaging Conference

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Gratings-based phase contrast imaging is a promising new radiographic technique providing three distinct contrast mechanisms, absorption, phase, and scatter, using a conventional x-ray tube source. We investigate the signatures available in these three contrast mechanisms with particular attention towards potential homeland security applications. We find that the scatter mode in particular is sensitive to textured materials, enabling lowered detection limits than absorption for materials such as powders. We investigate the length scales to which our imaging system is sensitive.

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Alternative method for differential phase-contrast imaging with weakly coherent hard x rays

Cited by 102 publications

References 23 publications

Absorption, refraction and scattering retrieval with an edge-illumination-based imaging setup

Absorption, refraction and scattering retrieval with an edge-illumination-based imaging setup

A quantitative, non-interferometric X-ray phase contrast imaging technique

Phase contrast x-ray imaging signatures for homeland security applications

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