Spatial‐Frequency‐Tuned Markers and Adaptive Correction for Rotational Motion

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

Research output: Contribution to journalArticle

35 Scopus citations

Abstract

A common type of motion present in clinical magnetic resonance imaging examinations is rotational motion, such as that due to voluntary motion during head examinations. The correction scheme presented in this work offers a method for eliminating the effects of rotations within the imaging plane. Integral to the implementation of this technique is the concept and design of spatial‐frequency‐tuned markers, which are used to track the rotational motion. These studies showed that it is possible to accurately track the motion, measuring both axis and angle of rotation, and use this information to retrospectively correct the acquired images. These markers can also provide information about any translational motion present. The resulting images show a marked decrease in artifacts and improved clarity.

Original languageEnglish (US)
Pages (from-to)663-669
Number of pages7
JournalMagnetic Resonance in Medicine
Volume33
Issue number5
DOIs
StatePublished - May 1995

Keywords

  • MRI motion correction
  • markers
  • navigator echo
  • rotation

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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