An Iterative Image Reconstruction for Differential X-ray Phase-contrast Computed Tomography

An Iterative Image Reconstruction for Differential X-ray Phase-contrast Computed Tomography

Year:    2015

Journal of Fiber Bioengineering and Informatics, Vol. 8 (2015), Iss. 3 : pp. 521–528

Abstract

The last decade saw the growth of the use of X-ray Phase-contrast Computed Tomography (PCT) imaging. Differential X-ray Phase-contrast CT (DPCT) has shown bright prospect for clinical use in recent years, but how to best reconstruct the phase-contrast tomographic image from incomplete or inconsistent projections remains challenging. We designed an iterative image reconstruction method for DPCT utilizing compressed sensing. This proposed method reconstructs the phase-contrast tomographic image of the refractive index decrement gradient with acceptable accuracy and image quality even when the projection data is undersampled or noisy. Real data experiments indicate this proposed method is accurate and practical and outperforms the analytic filtered back-projection reconstruction. This method shows potential for X-ray DPCT facilities in low dose tomography and fast acquisition imaging.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.3993/jfbim00125

Journal of Fiber Bioengineering and Informatics, Vol. 8 (2015), Iss. 3 : pp. 521–528

Published online:    2015-01

AMS Subject Headings:   

Copyright:    COPYRIGHT: © Global Science Press

Pages:    8

Keywords:    X-ray Phase-contrast Imaging