Adaptive motion compensation in MR imaging without use of navigator echoes

Joel P. Felmlee, Richard L. Ehman, Stephen J. Riederer, Hope W. Korin

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Retrospective correction of magnetic resonance (MR) image data to eliminate the effects of patient motion is possible with use of adaptive correction techniques. These methods require an accurate record of the motion that occurs during imaging. The authors evaluated whether motion information suitable for adaptive correction could be obtained from phase-encoded image data alone rather than from separate navigator echoes. Once such displacements were estimated from the image data, motion correction proceeded with use of the same algorithm used for the navigator echoes. The results show that image data alone can be used to effectively measure view-to-view displacements in phantoms, but external markers are required for accurate measurement during axial head imaging of patients.

Original languageEnglish (US)
Pages (from-to)139-142
Number of pages4
JournalRadiology
Volume179
Issue number1
DOIs
StatePublished - Apr 1991

Keywords

  • Magnetic resonance (MR), image processing, 10.1214
  • Magnetic resonance (MR), motion correction
  • Magnetic resonance (MR), quality assurance, 10.1214

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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