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Line integral retrieval and reconstruction for X-ray fan-beam differential phase contrast CT

  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A reconstruction technique for X-ray fan-beam differential phase-contrast computed tomography (DPC-CT) was reported in this paper. It consists of two steps which are line integral retrieval from the recorded DPC-CT projections and image reconstruction. The first step is performed using a retrieval filter which roots in the derivative property of Fourier transform and takes into account the differential nature of DPCCT projections. The second step is implemented by the classical fan-beam absorption-contrast filtered back-projection (FBP) algorithms. This work comprises a numerical study of the method and its experimental verification using a dataset measured with an X-ray DPC-CT system consisted of a threegrating interferometer and a mini-focus x-ray tube source. The results indicate that normalized root square error of the proposed method is 0.2532 and the reconstruction accuracy is improved 87% compared with direct FBP reconstruction.

Original languageEnglish
Title of host publicationProceedings - 5th International Conference on Instrumentation and Measurement, Computer, Communication, and Control, IMCCC 2015
EditorsJun-Bao Li
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1348-1351
Number of pages4
ISBN (Electronic)9781467377232
DOIs
StatePublished - 11 Feb 2016
Event5th International Conference on Instrumentation and Measurement, Computer, Communication, and Control, IMCCC 2015 - Qinhuangdao, China
Duration: 18 Sep 201520 Sep 2015

Publication series

NameProceedings - 5th International Conference on Instrumentation and Measurement, Computer, Communication, and Control, IMCCC 2015

Conference

Conference5th International Conference on Instrumentation and Measurement, Computer, Communication, and Control, IMCCC 2015
Country/TerritoryChina
CityQinhuangdao
Period18/09/1520/09/15

Keywords

  • Computed tomography
  • Differential phase contrast
  • Grating interferometer
  • Image reconstruction
  • Phase retrieval
  • X-ray imaging

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