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Sensors 2013, 13(6), 6882-6899; doi:10.3390/s130606882

Advanced Respiratory Motion Compensation for Coronary MR Angiography

1,*  and 1,2,3,4
Received: 15 April 2013 / Revised: 15 May 2013 / Accepted: 21 May 2013 / Published: 24 May 2013
(This article belongs to the Special Issue Medical & Biological Imaging)
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Despite technical advances, respiratory motion remains a major impediment in a substantial amount of patients undergoing coronary magnetic resonance angiography (CMRA). Traditionally, respiratory motion compensation has been performed with a one-dimensional respiratory navigator positioned on the right hemi-diaphragm, using a motion model to estimate and correct for the bulk respiratory motion of the heart. Recent technical advancements has allowed for direct respiratory motion estimation of the heart, with improved motion compensation performance. Some of these new methods, particularly using image-based navigators or respiratory binning, allow for more advanced motion correction which enables CMRA data acquisition throughout most or all of the respiratory cycle, thereby significantly reducing scan time. This review describes the three components typically involved in most motion compensation strategies for CMRA, including respiratory motion estimation, gating and correction, and how these processes can be utilized to perform advanced respiratory motion compensation.
Keywords: magnetic resonance imaging; coronary magnetic resonance angiography; respiratory motion correction; respiratory navigation magnetic resonance imaging; coronary magnetic resonance angiography; respiratory motion correction; respiratory navigation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Henningsson, M.; Botnar, R.M. Advanced Respiratory Motion Compensation for Coronary MR Angiography. Sensors 2013, 13, 6882-6899.

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