Respiratory Motion of the Heart: Kinematics and the Implications for the Spatial Resolution in Coronary Imaging

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384 Scopus citations

Abstract

Respiratory motion is a major limiting factor in improving image resolution and signal‐to‐noise ratio in MR coronary imaging. In this work the effects of respiration on the cardiac position were studied quantitively by imaging the heart during diastole at various positions of tidal respiration with a breath‐hold segmented fast gradient echo technique. It was found that during tidal breathing the movement of the heart due to respiration is dominated by superior‐inferior (SI) motion, which is linearly related to the SI motion of the diaphragm. The motion of the heart due to respiration is approximately a global translation. These results provide motivation for employing adaptive motion correction techniques to reduce image blurring in nonbreath‐hold coronary MR imaging.

Original languageEnglish (US)
Pages (from-to)713-719
Number of pages7
JournalMagnetic Resonance in Medicine
Volume33
Issue number5
DOIs
StatePublished - May 1995

Keywords

  • cardiac imaging
  • coronary magnetic resonance angiography
  • image artifacts
  • respiratory motion

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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