Motion-based projection generation for 4D-CT reconstruction

Salam Dhou, Geoffrey D. Hugo, Alen Docef

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

6 Scopus citations


A method for reducing streaking artifacts in 4D-CT reconstruction by generating additional projections is proposed. This method uses optical flow to track anatomy motion across the complete set of projections and then uses this information to compute interpolated projections while compensating for breathing motion. Original and interpolated projections, all belonging to one respiratory phase, are used to reconstruct a 4D-CT volume. Experimental results showed that the proposed method reduces artifacts and blurring in reconstructed 4D-CT volumes and improves the image quality.

Original languageEnglish
Title of host publication2014 IEEE International Conference on Image Processing, ICIP 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)9781479957514
StatePublished - Jan 28 2014

Publication series

Name2014 IEEE International Conference on Image Processing, ICIP 2014


  • CT reconstruction
  • interpolation
  • motion modeling
  • optical flow


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