Evaluation of free-breathing three-dimensional magnetic resonance coronary angiography with hybrid ordered phase encoding (HOPE) for the detection of proximal coronary artery stenosis
✍ Scribed by Nicholas H. Bunce; Permi Jhooti; Jennifer Keegan; Shelley L. Rahman; Catherine Bunce; David N. Firmin; Simon W. Davies; Christine H. Lorenz; Dudley J. Pennell
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 354 KB
- Volume
- 14
- Category
- Article
- ISSN
- 1053-1807
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✦ Synopsis
Abstract
We evaluated free‐breathing, prospective navigator‐gated, three‐dimensional (3D) magnetic resonance coronary angiography (MRCA) with hybrid ordered phase‐encoding (HOPE), in the detection of proximal coronary artery stenosis. The coronary arteries were imaged in 46 patients undergoing cardiac catheterization. The mean scan time was 48 minutes. The mean arterial length (mm) visualized was left main stem (LMS) 11.7 (SD 4.5), left anterior descending (LAD) 30.1 (SD 11.1), circumflex (LCx) 15.5 (SD 8.6), and right (RCA) 56.2 (SD 20.8). Twenty‐three patients had coronary artery disease with 47 significant stenoses on cardiac catheterization. All LMS were normal on both catheterization and MRCA. MRCA sensitivity was highest for the LAD (89% CI 65%–99%) and RCA (76% CI 50%–93%), but lower for the LCx (50% CI 21%–79%). Specificity ranged from 72%–100%. Improvements in image quality, length of vessel seen, and specific imaging of the LCx are required for MRCA to become an alternative to cardiac catheterization. J. Magn. Reson. Imaging 2001;14:677–684. © 2001 Wiley‐Liss, Inc.