Preliminary investigation of respiratory self-gating for free-breathing segmented cine MRI

Andrew C. Larson*, Peter Kellman, Andrew Arai, Glenn A. Hirsch, Elliot McVeigh, Debiao Li, Orlando P. Simonetti

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

130 Scopus citations

Abstract

Segmented cine MRI generally requires breath-holding, which can be problematic for many patients. Navigator echo techniques, particularly successful for free-breathing coronary MRA, are incompatible with the acquisition strategies and SSFP pulse sequences commonly used for cine MRI. The purpose of this work is to introduce a new self-gating technique deriving respiratory gating information directly from the raw imaging data acquired for segmented cine MRI. The respiratory self-gating technique uses interleaved radial k-space sampling to provide low-resolution images in real time during the free-breathing acquisition that are compared to target expiration images. Only the raw data-producing images with high correlation to the target images are included in the final high-resolution reconstruction. The self-gating technique produced cine series with no significant differences in quantitative image sharpness to series produced using comparable breath-held techniques. Because of the difficulties associated with breath-holding, the respiratory self-gating technique represents an important practical advance for cardiac MRI.

Original languageEnglish (US)
Pages (from-to)159-168
Number of pages10
JournalMagnetic resonance in medicine
Volume53
Issue number1
DOIs
StatePublished - Jan 2005

Keywords

  • CMR
  • Cine
  • Gating
  • Navigator
  • Triggering

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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