Whole-Heart Coronary MRA with 3D Affine Motion Correction Using 3D Image-Based Navigation

Authors

  • Markus Henningsson,

    Corresponding author
    1. Division of Imaging Sciences & Biomedical Engineering, King's College London, London, UK
    • Correspondence to: Markus Henningsson, Ph.D., King's College London, Division of Imaging Sciences and Biomedical Engineering, The Rayne Institute, 4th Floor, Lambeth Wing, St Thomas’ Hospital, London SE1 7EH, UK. E-mail: markus.o.henningsson@kcl.ac.uk

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  • Claudia Prieto,

    1. Division of Imaging Sciences & Biomedical Engineering, King's College London, London, UK
    2. Escuela de Ingeniería, Pontificia Universidad Catolica de Chile, Santiago, Chile
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  • Amedeo Chiribiri,

    1. Division of Imaging Sciences & Biomedical Engineering, King's College London, London, UK
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  • Ghislain Vaillant,

    1. Division of Imaging Sciences & Biomedical Engineering, King's College London, London, UK
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  • Reza Razavi,

    1. Division of Imaging Sciences & Biomedical Engineering, King's College London, London, UK
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  • René M Botnar

    1. Division of Imaging Sciences & Biomedical Engineering, King's College London, London, UK
    2. Wellcome Trust and EPSRC Medical Engineering Center, King's College London, London, UK
    3. BHF Centre of Excellence, King's College London, London, UK
    4. NIHR Biomedical Research Centre, King's College London, London, UK
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Abstract

Purpose

Robust motion correction is necessary to minimize respiratory motion artefacts in coronary MR angiography (CMRA). The state-of-the-art method uses a 1D feet-head translational motion correction approach, and data acquisition is limited to a small window in the respiratory cycle, which prolongs the scan by a factor of 2–3. The purpose of this work was to implement 3D affine motion correction for Cartesian whole-heart CMRA using a 3D navigator (3D-NAV) to allow for data acquisition throughout the whole respiratory cycle.

Methods

3D affine transformations for different respiratory states (bins) were estimated by using 3D-NAV image acquisitions which were acquired during the startup profiles of a steady-state free precession sequence. The calculated 3D affine transformations were applied to the corresponding high-resolution Cartesian image acquisition which had been similarly binned, to correct for respiratory motion between bins.

Results

Quantitative and qualitative comparisons showed no statistical difference between images acquired with the proposed method and the reference method using a diaphragmatic navigator with a narrow gating window.

Conclusion

We demonstrate that 3D-NAV and 3D affine correction can be used to acquire Cartesian whole-heart 3D coronary artery images with 100% scan efficiency with similar image quality as with the state-of-the-art gated and corrected method with approximately 50% scan efficiency. Magn Reson Med 71:173–181, 2014. © 2013 Wiley Periodicals, Inc.

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