Abstract
Purpose: To compare cross-sectional and in-plane coronary vessel wall imaging using a spiral readout at 1.5 and 3 Tesla (T).
Materials and Methods: Free-breathing coronary vessel wall imaging using a local inversion technique and spiral readout was implemented. Images were acquired in ten healthy adult subjects on a 3T clinical scanner using a 32-element cardiac coil and repeated on a 1.5T clinical scanner using a 5-element coil.
Results: Cross-sectional and in-plane spiral vessel wall imaging was performed at both 1.5 and 3T. In cross-sectional images, artifact scores were superior at 1.5T (P <0.05) but no significant difference was found in image quality scores compared with 3T. Image quality (P <0.01) and artifact scores (P <0.01) were found to be superior for in-plane images at 1.5T. Vessel wall sharpness in the in-plane orientation was also found to be higher at 1.5T (P <0.03).
Conclusion: Although excellent in-plane coronary vessel wall images can be acquired at 3T, the overall robustness may be affected by off-resonance blurring due to increased B0 inhomogeneity compared with 1.5T.
| Original language | English |
|---|---|
| Pages (from-to) | 969 - 975 |
| Number of pages | 7 |
| Journal | Journal of Magnetic Resonance Imaging |
| Volume | 35 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 2012 |
Keywords
- Sensitivity and Specificity
- Imaging, Three-Dimensional
- Image Interpretation, Computer-Assisted
- Reproducibility of Results
- Coronary Vessels
- Humans
- Algorithms
- Magnetic Resonance Angiography
- Image Enhancement
- Middle Aged
- Male
- Female