Comparison of image quality between contrast-enhanced magnetic resonance angiography (CE-MRA) and digital subtraction angiography (DSA)
| Vessel Conspicuity | Contrast | Vessel Continuity | Vessel Sharpness | Background Homogeneity | |
|---|---|---|---|---|---|
| Relative score | −0.7 ± 1.3 | 0.3 ± 1.4 | −1.5 ± 0.6 | −1.6 ± 1.1 | −1.5 ± 0.8 |
| T+/T− | 25.5/96.5 | 71/34 | 0/119 | 0/120 | 0/114 |
| P value | >.05, NS | >.05, NS | <.001 | <.001 | <.001 |
Note:—A negative (positive) score indicates that DSA performs better (worse) than CE-MRA. Mean relative scores are ±1 SD. T values (+ or −) are based on a rank-sums test. NS indicates not significant.