Abstract

Free-breathing 3D whole-heart coronary mra using respiratory motion-resolved sparse reconstruction

Highlights

  • Navigator gating is commonly used to minimize respiratory motion in free-breathing whole-heart coronary MRA [1]

  • Respiratory self-navigation (SN) [2-3], enables 100% scan efficiency, but performs motion correction over a broad range of respiratory displacements, which can result in image artifacts

  • We propose an alternative respiratory motion-resolved approach based on 3D radial phyllotaxis sampling, respiratory motion sorting and sparse reconstruction

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Summary

Introduction

Navigator gating is commonly used to minimize respiratory motion in free-breathing whole-heart coronary MRA [1]. Lengthy and unpredictable acquisition times remain a drawback. Respiratory self-navigation (SN) [2-3], enables 100% scan efficiency, but performs motion correction over a broad range of respiratory displacements, which can result in image artifacts. We propose an alternative respiratory motion-resolved approach based on 3D radial phyllotaxis sampling, respiratory motion sorting and sparse reconstruction

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