Motion compensated fan-beam reconstruction for nonrigid transformation

Katsuyuki Taguchi, Hiroyuki Kudo

Research output: Contribution to journalArticlepeer-review

Abstract

We develop an approximate fan-beam algorithm to reconstruct an object with time-dependent nonrigid transformation such as the heart. The method is in the form of derivative backprojection filtering with compensation of affine transformations on a local basis. Computer simulations showed the proposed method significantly reduces image artifact due to nonrigid motion. Therefore, with very little motion artifact, the proposed method allowed us to reconstruct images from projections over about one motion cycle, resulting in reduced image noise level down to 40% of the current level.

Original languageEnglish (US)
Article number4520153
Pages (from-to)907-917
Number of pages11
JournalIEEE transactions on medical imaging
Volume27
Issue number7
DOIs
StatePublished - Jul 2008

Keywords

  • Computed tomography (CT)
  • Motion compensation

ASJC Scopus subject areas

  • Software
  • Radiological and Ultrasound Technology
  • Computer Science Applications
  • Electrical and Electronic Engineering

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