Abstract
OBJECTIVE. The purpose of this study was to compare whole-heart acquisition with targeted-volume acquisition in 3-T navigator coronary MR angiography with parallel imaging. SUBJECTS AND METHODS. The right and left coronary arteries of 20 subjects were imaged with axial whole-heart acquisition and two oblique targeted-volume acquisitions. RESULTS. Both whole-heart and targeted-volume acquisitions were completed with similar navigator efficiencies (≈ 50%) and depicted similar coronary artery diameters (≈ 3 mm) (p ≥ 0.06). The lengths of the coronary arteries were not significantly different (p = 0.07-0.45) for the whole-heart and targeted-volume approaches. Depiction of the sharper coronary arteries (p ≤ 0.04) and overall image quality (p < 0.02) were better with the targeted-volume approach. CONCLUSION. For current 3-T navigator parallel-imaging coronary MR angiography, targeted-volume acquisition yields sharper coronary images than does whole-heart acquisition.
| Original language | English |
|---|---|
| Pages (from-to) | 38-42 |
| Number of pages | 5 |
| Journal | American Journal of Roentgenology |
| Volume | 191 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jul 2008 |
| Externally published | Yes |
Keywords
- 3 T
- Coronary MR angiography
- Navigator
- Targeted volume
- Whole heart