Quick Search:

uzh logo
Browse by:
bullet
bullet
bullet
bullet

Zurich Open Repository and Archive 

Zhifeng, H; Li, Z; Zhiqiang, C; Kejun, K; Hongxia, Y; Zhenchang, W; Stampanoni, M (2011). Low dose reconstruction algorithm for differential phase contrast imaging. Journal of X-Ray Science and Technology, 19(3):403-415.

Full text not available from this repository.

Abstract

Differential phase contrast imaging computed tomography (DPCI-CT) is a novel x-ray inspection method to reconstruct the distribution of refraction index rather than the attenuation coefficient in weakly absorbing samples. In this paper, we propose an iterative reconstruction algorithm for DPCI-CT which benefits from the new compressed sensing theory. We first realize a differential algebraic reconstruction technique (DART) by discretizing the projection process of the differential phase contrast imaging into a linear partial derivative matrix. In this way the compressed sensing reconstruction problem of DPCI reconstruction can be transformed to a resolved problem in the transmission imaging CT. Our algorithm has the potential to reconstruct the refraction index distribution of the sample from highly undersampled projection data. Thus it can significantly reduce the dose and inspection time. The proposed algorithm has been validated by numerical simulations and actual experiments.

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Biomedical Engineering
DDC:170 Ethics
610 Medicine & health
Language:English
Date:2011
Deposited On:01 Mar 2012 14:23
Last Modified:27 Nov 2013 23:53
Publisher:IOS Press
ISSN:0895-3996
Publisher DOI:10.3233/XST-2011-0303
Citations:Web of Science®. Times Cited: 7
Google Scholar™
Scopus®. Citation Count: 8

Users (please log in): suggest update or correction for this item

Repository Staff Only: item control page