A comparison of a generalized DEI method with multiple-image radiography

Cheng Ying Chou, Mark A. Anastasio, Jovan G. Brankov, Miles N. Wernick

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Diffraction enhanced imaging (DEI) is an analyzer-based X-ray phase-contrast imaging method that measures the absorption and refractive properties of an object. A well-known limitation of DEI is that it does not account for ultra-small-angle X-ray scattering (USAXS), which is produced commonly by biological tissue. In this work, an extended DEI (E-DEI) imaging method is described that attempts to circumvent this limitation. The E-DEI method concurrently reconstructs three images that depict an object's projected absorption, refraction, and USAXS properties, and can be viewed as an implementation of the multiple-image radiography (MIR) paradigm. Planar and computed tomography (CT) implementations of E-DEI and an existing MIR method are compared by use of computer-simulation studies that employ statistical models to describe USAXS effects.

Original languageEnglish (US)
Title of host publicationDevelopments in X-Ray Tomography V
StatePublished - Nov 13 2006
Externally publishedYes
EventDevelopments in X-Ray Tomography V - San Diego, CA, United States
Duration: Aug 15 2006Aug 17 2006

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
ISSN (Print)1605-7422


OtherDevelopments in X-Ray Tomography V
Country/TerritoryUnited States
CitySan Diego, CA


  • Diffraction enhanced imaging
  • Multiple-image radiography
  • Phase-contrast imaging
  • X-ray ultra-small-angle scattering

ASJC Scopus subject areas

  • General Engineering


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