Three-dimensional respiratory-gated MR angiography of coronary arteries: comparison with conventional coronary angiography.
- 1 June 1996
- journal article
- research article
- Published by American Roentgen Ray Society in American Journal of Roentgenology
- Vol. 166 (6) , 1399-1404
- https://doi.org/10.2214/ajr.166.6.8633453
Abstract
MR coronary angiography is most often performed using two-dimensional techniques. Although three-dimensional (3D) acquisitions do have important advantages, they take too long for a single breath-hold and are thus susceptible to respiratory motion artifacts. The purpose of this study was to investigate the accuracy of a unique respiratory-gated 3D MR angiographic technique in identifying the proximal coronary arteries in patients suspected of having coronary artery disease. In addition, we investigated the capability of this technique to detect proximal stenoses.We performed a prospective blinded study in 20 patients who were referred for conventional coronary angiography. A cardiac-gated 3D gradient-echo sequence with fat suppression was used. Retrospective respiratory gating was performed using navigator echoes of the diaphragm position. Using multiplanar reformatting, two independent readers blindly analyzed the data sets for visualization of major coronary arteries, lengths of imaged segments, and det...Keywords
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