Optimization of the in-line X-ray phase-contrast imaging setup considering edge-contrast enhancement and spatial resolution

JIA Quan-Jie; CHEN Yu; LI Gang; JIANG Xiao-Ming

doi:10.1088/1674-1137/36/3/014

Chinese Physics C> 2012, Vol. 36> Issue(3) : 267-274 DOI: 10.1088/1674-1137/36/3/014

Optimization of the in-line X-ray phase-contrast imaging setup considering edge-contrast enhancement and spatial resolution

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Abstract：
Employing the approximation theory based on refraction and the definition of the total point-spread-function of the imaging system, the variation in the edge contrast of simple model samples is discussed with different source-to-sample and sample-to-detector distances, which actually means different spatial resolutions of the imaging system. The experiments were carried out with the Beamline 4W1A imaging setup at the Beijing Synchrotron Radiation Facility for simple model and insect samples. The results show that to obtain clear phase-contrast images of biologic tissues for the X-ray in-line imaging setup, with determined parameters such as the size of the X-ray source, the pixel size of the detector and the fixed source-to-sample distance, there is a range of optimized sample-to-detector distances. The analysis method discussed in this article can be helpful in optimizing the setup of X-ray in-line phase-contrast imaging.

References

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JIA Quan-Jie, CHEN Yu, LI Gang and JIANG Xiao-Ming. Optimization of the in-line X-ray phase-contrast imaging setup considering edge-contrast enhancement and spatial resolution[J]. Chinese Physics C, 2012, 36(3): 267-274. doi: 10.1088/1674-1137/36/3/014

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Received: 2011-05-16
Revised: 2011-07-29

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沈阳化工大学材料科学与工程学院沈阳 110142

Optimization of the in-line X-ray phase-contrast imaging setup considering edge-contrast enhancement and spatial resolution

Corresponding author: JIANG Xiao-Ming,

Received Date: 2011-05-16
Accepted Date: 2011-07-29
Available Online: 2012-03-01

Abstract: Employing the approximation theory based on refraction and the definition of the total point-spread-function of the imaging system, the variation in the edge contrast of simple model samples is discussed with different source-to-sample and sample-to-detector distances, which actually means different spatial resolutions of the imaging system. The experiments were carried out with the Beamline 4W1A imaging setup at the Beijing Synchrotron Radiation Facility for simple model and insect samples. The results show that to obtain clear phase-contrast images of biologic tissues for the X-ray in-line imaging setup, with determined parameters such as the size of the X-ray source, the pixel size of the detector and the fixed source-to-sample distance, there is a range of optimized sample-to-detector distances. The analysis method discussed in this article can be helpful in optimizing the setup of X-ray in-line phase-contrast imaging.