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Title: Clarification of aspects in in-line phase-sensitive x-ray imaging

Abstract

In this report we clarify two aspects for in-line phase-sensitive x-ray imaging, which includes phase-contrast imaging and phase imaging. First, we point out that there is confusion in the literature about the lateral coherence length, which is widely adopted as the coherence criteria for implementing phase-sensitive imaging. The confusion exaggerates the coherence requirement for clinical implementation of in-line phase-sensitive imaging. Instead we show that the ratio of the phase-space shearing length to lateral coherence length is a good measure for gauging the partial coherence realized in a specific image setting. Second, based on the general intensity equation for in-line phase-sensitive imaging, we discuss the differences between the phase-contrast imaging and phase imaging in terms of the physics mechanism, image acquisition approaches, computation algorithm development, and the potentials for tissue quantitative characterization.

Authors:
;  [1];  [2]
  1. Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35233 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20951063
Resource Type:
Journal Article
Resource Relation:
Journal Name: Medical Physics; Journal Volume: 34; Journal Issue: 2; Other Information: DOI: 10.1118/1.2431475; (c) 2007 American Association of Physicists in Medicine; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; ALGORITHMS; CALCULATION METHODS; COHERENCE LENGTH; IMAGE PROCESSING; IMAGES; PHASE SPACE; X RADIATION

Citation Formats

Wu Xizeng, Liu Hong, and Center for Bioengineering and School of Electrical and Computer Engineering, University of Oklahoma, Norman, Oklahoma 73019. Clarification of aspects in in-line phase-sensitive x-ray imaging. United States: N. p., 2007. Web. doi:10.1118/1.2431475.
Wu Xizeng, Liu Hong, & Center for Bioengineering and School of Electrical and Computer Engineering, University of Oklahoma, Norman, Oklahoma 73019. Clarification of aspects in in-line phase-sensitive x-ray imaging. United States. doi:10.1118/1.2431475.
Wu Xizeng, Liu Hong, and Center for Bioengineering and School of Electrical and Computer Engineering, University of Oklahoma, Norman, Oklahoma 73019. Thu . "Clarification of aspects in in-line phase-sensitive x-ray imaging". United States. doi:10.1118/1.2431475.
@article{osti_20951063,
title = {Clarification of aspects in in-line phase-sensitive x-ray imaging},
author = {Wu Xizeng and Liu Hong and Center for Bioengineering and School of Electrical and Computer Engineering, University of Oklahoma, Norman, Oklahoma 73019},
abstractNote = {In this report we clarify two aspects for in-line phase-sensitive x-ray imaging, which includes phase-contrast imaging and phase imaging. First, we point out that there is confusion in the literature about the lateral coherence length, which is widely adopted as the coherence criteria for implementing phase-sensitive imaging. The confusion exaggerates the coherence requirement for clinical implementation of in-line phase-sensitive imaging. Instead we show that the ratio of the phase-space shearing length to lateral coherence length is a good measure for gauging the partial coherence realized in a specific image setting. Second, based on the general intensity equation for in-line phase-sensitive imaging, we discuss the differences between the phase-contrast imaging and phase imaging in terms of the physics mechanism, image acquisition approaches, computation algorithm development, and the potentials for tissue quantitative characterization.},
doi = {10.1118/1.2431475},
journal = {Medical Physics},
number = 2,
volume = 34,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}