Evaluation of left atrial contraction contribution to left ventricular filling using cardiovascular magnetic resonance
Article first published online: 23 OCT 2012
Copyright © 2012 Wiley Periodicals, Inc.
Journal of Magnetic Resonance Imaging
Volume 37, Issue 4, pages 860–864, April 2013
How to Cite
Alhogbani, T., Strohm, O. and Friedrich, M. G. (2013), Evaluation of left atrial contraction contribution to left ventricular filling using cardiovascular magnetic resonance. J. Magn. Reson. Imaging, 37: 860–864. doi: 10.1002/jmri.23881
- Issue published online: 21 MAR 2013
- Article first published online: 23 OCT 2012
- Manuscript Accepted: 13 SEP 2012
- Manuscript Received: 22 FEB 2012
- University of Calgary and King Saud University
- left atrial function;
- left ventricular filling;
- cardiovascular magnetic resonance
To describe a new method to quantify the left atrial contraction contribution (ACC) to left ventricular (LV) filling using cardiovascular magnetic resonance (CMR).
Materials and Methods:
We assessed 120 normal subjects (50% female) using steady-state free precession CMR volumetry. Volumes measurements were performed using short axis and rotational long axis views. The percentage of ACC was calculated by dividing the LV filling volume resulting from left atrial (LA) contraction by the LV stroke volume (LVSV).
The described method was well reproducible. The ACC in normal subjects was 15 ± 5% for ages <40 years, 28 ± 8% for ages 40 to 55 years, and 38 ± 5% for ages >55 years. When adjusted for age, ie, dividing the ACC percentage by age, a value between 0.4 and 0.7 was found to represent the normal range of ACC at any age.
The study presents a new and accurate CMR volumetric method to quantify ACC to LV filling. ACC ranges from 10%–40%, depending on age. J. Magn. Reson. Imaging 2013;37:860–864. © 2012 Wiley Periodicals, Inc.