Cruz, G;
Atkinson, D;
Henningsson, M;
Botnar, R;
Prieto, C;
(2017)
Highly efficient nonrigid motion corrected 3D whole-heart coronary vessel wall imaging.
Magnetic Resonance in Medicine
, 77
(5)
pp. 1894-1908.
10.1002/mrm.26274.
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Abstract
PURPOSE: To develop a respiratory motion correction framework to accelerate free-breathing three-dimensional (3D) whole-heart coronary lumen and coronary vessel wall MRI. METHODS: We developed a 3D flow-independent approach for vessel wall imaging based on the subtraction of data with and without T2-preparation prepulses acquired interleaved with image navigators. The proposed method corrects both datasets to the same respiratory position using beat-to-beat translation and bin-to-bin nonrigid corrections, producing coregistered, motion-corrected coronary lumen and coronary vessel wall images. The proposed method was studied in 10 healthy subjects and was compared with beat-to-beat translational correction (TC) and no motion correction for the left and right coronary arteries. Additionally, the coronary lumen images were compared with a 6-mm diaphragmatic navigator gated and tracked scan. RESULTS: No significant differences (P > 0.01) were found between the proposed method and the gated and tracked scan for coronary lumen, despite an average improvement in scan efficiency to 96% from 59%. Significant differences (P < 0.01) were found in right coronary artery vessel wall thickness, right coronary artery vessel wall sharpness, and vessel wall visual score between the proposed method and TC. CONCLUSION: The feasibility of a highly efficient motion correction framework for simultaneous whole-heart coronary lumen and vessel wall has been demonstrated.
| Type: | Article |
|---|---|
| Title: | Highly efficient nonrigid motion corrected 3D whole-heart coronary vessel wall imaging |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/mrm.26274 |
| Publisher version: | http://doi.org/10.1002/mrm.26274 |
| Language: | English |
| Additional information: | Copyright © 2016 The Authors. Published by Wiley Periodicals, Inc. on behalf of International Society for Magnetic Resonance in Medicine. This is an open access article under the terms of the Creative Commons Attribution License (CC BY 4.0) (https://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Nonrigid motion; coronary vessel wall; coronary MRA; image navigators |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Medicine UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Medicine > Department of Imaging |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1484822 |
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