TY - JOUR
T1 - An Iterative Image Reconstruction for Differential X-ray Phase-contrast Computed Tomography
JO - Journal of Fiber Bioengineering and Informatics
VL - 3
SP - 521
EP - 528
PY - 2015
DA - 2015/08
SN - 8
DO - http://doi.org/10.3993/jfbim00125
UR - https://global-sci.org/intro/article_detail/jfbi/4733.html
KW - X-ray Phase-contrast Imaging
KW - Computed Tomography (CT)
KW - Compressed Sensing
KW - Low Dose Tomography
KW - Fast Acquisition Imaging
AB - 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.