Laboratory-based X-ray phase-contrast imaging technique for material and medical science applications

Kashyap, Yogesh; Yadav, P.S.; Roy, Tushar; Sarkar, Partha Sarathi; Shukla, Mayank; Sinha, Alok

doi:10.1016/j.apradiso.2007.12.008

Cited by 23 publications

(14 citation statements)

References 14 publications

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“…Fig. 8(b) shows the NRMSE of reconstructed beetle for various bit depths (6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16) and read noise (0-1/ 1000) of detector. The read noise does not significantly increase the reconstruction error, and thus is not a concern.…”

Section: Resultsmentioning

confidence: 98%

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

Sung

Nagarkar

et al. 2014

Optics Communications

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Section: Resultsmentioning

confidence: 98%

“…Only a few sources, e.g., a synchrotron [9] or a micro-focus source [11], can provide such X-rays. The synchrotron is not practical in a clinical setting, while the microfocus source cannot generate sufficient beam flux for whole body imaging.…”

Section: Introductionmentioning

confidence: 99%

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

Sung

Nagarkar

et al. 2014

Optics Communications

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“…X-ray phase-contrast imaging is a novel nondestructive detection technology in medicine, biology and materials science [1][2][3][4]. It offers up to 1000 times sensitivity than absorption-based techniques.…”

Section: Introductionmentioning

confidence: 99%

A phase retrieval algorithm for polychromatic x-ray in-line phase contrast imaging

Guo

Liu

et al. 2012

SPIE Proceedings

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In-line phase contrast imaging using micro-focus x-ray source is an important diagnostic tool in medicine, biology and materials science. The phase retrieval enables us to obtain material information from the gray of the phase-contrast image. A phase retrieval algorithm based on phase-attenuation and Fourier-wavelet regularization was proposed, which only need one single projection image and can deal with the case of large Fresnel propagator corresponding to high spatial resolution imaging. And the energy response function of detector and x-ray spectral density distribution of source were considered in this algorithm. The effectiveness of the proposed approach was tested by experimental image of silica aerogel.

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“…These new imaging methods are called X-ray phase contrast imaging (XPCI). As the phase contrast does not directly depend upon the energy deposited in the object, the dose delivered to the sample can be reduced [1].…”

Section: Introductionmentioning

confidence: 99%

“…They are interferometric technique [1], diffraction enhanced imaging [1], grating-based differential phase contrast imaging [2] and inline phase contrast imaging [1]. Diffraction enhanced and interferometry-based imaging methods have stringent requirement in terms of high coherence of source for implementing these techniques.…”

Section: Introductionmentioning

confidence: 99%

X-Ray Phase-Contrast Imaging Methods for Biological Structures

Fu¹,

Li²,

Zhu³

et al. 2009

2009 2nd International Conference on Biomedical Engineering and Informatics

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X-ray imaging is of paramount importance for clinical and preclinical imaging but it is fundamentally restricted by the attenuation-based contrast mechanism, which has remained essentially the same since Roentgen's discovery a century ago. Different from the conventional method based on the attenuation contrast mechanism, X-ray phase-contrast imaging (XPCI) is proposed for the study of biological tissues and structures. This technique is also well suited for the imaging of materials such as carbon fibers, carbon composite materials, polymers, etc. This paper firstly discusses two XPCI methods. The first one is in-line phase contrast imaging based on the micro-focus X-ray source and the transport of intensity equation (TIE). The second one is the differential phase contrast imaging based on the grating and the normal X-ray source. Their imaging setups and the imaging principles are described. An experiment system based on the first XPCI method is set up. Phase contrast image of mosquito is acquired successfully. The first XPCI method has the simplest imaging setup but time-consuming. The second one has better Xray utilization efficiency but the imaging layout is more complicated. Based on these work, a new micro-focus grating differential phase contrast imaging method is finally proposed and described.

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Laboratory-based X-ray phase-contrast imaging technique for material and medical science applications

Cited by 23 publications

References 14 publications

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

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

A phase retrieval algorithm for polychromatic x-ray in-line phase contrast imaging

X-Ray Phase-Contrast Imaging Methods for Biological Structures

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