Sinogram-based motion correction of PET images using optical motion tracking system and list-mode data acquisition

Sang Keun Woo, Hiroshi Watabe, Yong Choi, Kyeong Min Kim, Chang Choon Park, Peter M. Bloomfield, Hidehiro Iida

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Motion of the head during brain positron emission tomography (PET) acquisitions has been identified as a source of artifact in the reconstructed image. A number of techniques have been proposed to correct for this motion artifact, but they are unable to correct for a motion during an acquisition. The aim of this study was to develop a sinogram-based motion correction (SBMC) technique to correct directly the head motion during a PET scan using a motion tracking system and list-mode data acquisition. This method uses a rebinning procedure whereby the lines of response (LOR) are geometrically transformed according to the current values of six-dimensional motion data. A Michelogram was recomposed using the rebinned LOR, and the motion-corrected sinogram was generated. In the motion corrected image, the blurring artifact due to the motion was reduced by the SBMC technique. This technique was applied to actual PET data acquired in the list-mode, and demonstrated the potential for real-time motion correction of head movements during a PET acquisition.

Original languageEnglish
Pages (from-to)782-788
Number of pages7
JournalIEEE Transactions on Nuclear Science
Volume51
Issue number3 II
DOIs
Publication statusPublished - 2004 Jun 1
Externally publishedYes

Keywords

  • Motion correction
  • Optical tracking system
  • PET
  • Sinogram

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

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