Whole-Heart Coronary MRA with 3D Affine Motion Correction Using 3D Image-Based Navigation
Article first published online: 11 FEB 2013
Copyright © 2013 Wiley Periodicals, Inc.
Magnetic Resonance in Medicine
Volume 71, Issue 1, pages 173–181, January 2014
How to Cite
Henningsson, M., Prieto, C., Chiribiri, A., Vaillant, G., Razavi, R. and Botnar, R. M. (2014), Whole-Heart Coronary MRA with 3D Affine Motion Correction Using 3D Image-Based Navigation. Magn Reson Med, 71: 173–181. doi: 10.1002/mrm.24652
- Issue published online: 17 DEC 2013
- Article first published online: 11 FEB 2013
- Manuscript Revised: 27 DEC 2012
- Manuscript Accepted: 27 DEC 2012
- Manuscript Received: 30 AUG 2012
- British Heart Foundation. Grant Number: RG/12/1/29262
- respiratory motion correction;
- whole-heart CMRA;
- 3D affine transform;
- phase reordering
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.
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.
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.
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.