Table 3:
Normalized mean 
and enhancement at early-versus-delayed MR VWI scanning time points
| Location (No.) | Precontrast | Early (5–15 mins) | Delayed (20–30 mins) | Early to Delayed (Delayed-Early) | %Δ (% change in 
) | P Value |
|---|---|---|---|---|---|---|
| ICAD-Ps (17) | 0.947 | 1.762 | 1.889 | 0.127 | 7.21% | <.001 |
| IAs (34) | 0.836 | 1.177 | 1.301 | 0.124 | 10.54% | <.001 |
| Cavernous sinus (39) | 0.808 | 1.886 | 1.736 | −0.15 | −7.95% | <.001 |
| Pituitary infundibulum (38) | 0.985 | 1.925 | 1.752 | −0.173 | −8.99% | <.001 |
| Temporalis muscle (40) | 0.529 | 0.787 | 0.756 | −0.031 | −3.94% | .195 |
| Choroid plexus (40) | 0.794 | 1.522 | 1.484 | −0.038 | −2.50% | .711 |
| IAs <5 mm (17) | 0.848 | 1.141 | 1.239 | 0.098 | 8.59% | .025 |
| IAs >5 mm (17) | 0.824 | 1.214 | 1.363 | 0.149 | 12.27% | .002 |
| Regular (16) | 0.821 | 1.149 | 1.249 | 0.1 | 8.70% | .012 |
| Irregular (18) | 0.848 | 1.202 | 1.347 | 0.145 | 10.98% | .004 |
| No AWE (13) | 0.858 | 0.969 | 1.036 | 0.067 | 0.05% | .048 |
| AWE (21) | 0.822 | 1.306 | 1.465 | 0.159 | 12.17% | .003 |