Categories | Standard (S-MRA) | New (Z-MRA) | P value |
---|---|---|---|
Average scan time in seconds | 52.4±3.5 | 17.9±1.4 | <0.001 |
Diagnostic Confidence (higher better) | 4.83±0.30 | 4.52±0.46 | <0.001 |
Vascular contrast (higher better) | 3.55±0.72 | 4.51±0.61 | <0.001 |
Artifact (higher better) | 3.97±0.89 | 3.80±1.21 | <0.001 |
Overall Image Quality | 3.86±0.88 | 3.85±1.20 | 0.867 |
Image Quality (annulus) | 3.96±0.55 | 3.69±0.61 | 0.018 |
Image Quality (sinus) | 3.96±0.53 | 3.58±0.70 | 0.007 |
Image Quality (STJ) | 4.11±0.51 | 3.74±0.77 | 0.010 |
Image Quality (asc ao) | 4.32±0.58 | 4.24±0.61 | 0.51 |
Image Quality (arch) | 4.07±0.54 | 4.74±0.45 | <0.001 |
Image Quality (desc ao) | 4.46±0.52 | 4.88±0.36 | <0.001 |