Mr. Suever and Mr. Watson contributed equally to this article.
Time-resolved analysis of coronary vein motion and cross-sectional area†
Article first published online: 18 JUL 2011
Copyright © 2011 Wiley-Liss, Inc.
Journal of Magnetic Resonance Imaging
Volume 34, Issue 4, pages 811–815, October 2011
How to Cite
Suever, J. D., Watson, P. J., Eisner, R. L., Lerakis, S., O'Donnell, R. E. and Oshinski, J. N. (2011), Time-resolved analysis of coronary vein motion and cross-sectional area. J. Magn. Reson. Imaging, 34: 811–815. doi: 10.1002/jmri.22674
- Issue published online: 16 SEP 2011
- Article first published online: 18 JUL 2011
- Manuscript Accepted: 6 MAY 2011
- Manuscript Received: 2 JUL 2010
- National Science Foundation (NSF)
- Contract grant sponsor: American Heart Association. Grant Number: Grant-in-Aid 0855386E
- National Institute of Health (NIH). Grant Number: HL089160
- coronary vein motion;
- cardiac resynchronization therapy;
- coronary sinus;
- magnetic resonance coronary venograms;
- heart failure;
- ejection fraction
To quantify periods of low motion and cross-sectional area changes of the coronary veins during the cardiac cycle for planning magnetic resonance coronary venograms (MRCV).
Materials and Methods:
Images were acquired from 19 patients with coronary artery disease (CAD) and 13 patients scheduled for cardiac resynchronization therapy (CRT). The displacement and cross-sectional area of the coronary sinus was tracked, and periods of low motion were defined as consecutive time points during which the position of the coronary sinus remained within a 0.67-mm diameter region. Patients were classified as systolic dominant or diastolic dominant based on the relative duration of their low motion periods.
All CRT patients were classified as systolic dominant, and 32% of these had no separate diastolic rest period. All CAD patients with ejection fraction < 35% were classified as systolic dominant, while all CAD patients with ejection fraction > 35%were diastolic dominant. In 77% of all subjects, the cross-sectional area of the coronary sinus was larger in systole than in diastole.
The movement of the coronary sinus can be used to classify patients as either having a longer systolic or diastolic rest period. The classification of the CRT patients as systolic dominant suggests that MRCVs be acquired in systole for CRT planning; however, each patient's low motion periods should be categorized to ensure the correct period is being used to minimize motion artifacts. J. Magn. Reson. Imaging 2011;. © 2011 Wiley-Liss, Inc.