Table 2.
Median signal intensity (pre- and post-contrast) in arbitrary units as well as absolute and relative change.
| Superior sagittal sinus |
Torcula | Cribriform plate | Jugular foramen | Perivenous spaces | |||
|---|---|---|---|---|---|---|---|
| Anterior | Middle | Posterior | |||||
| Signal intensity | |||||||
| Pre-contrast, median (IQR) | 202 (188–231) | 270 (252–334) | 193 (151–228) | 227 (200–249) | 240 (203–291) | 209 (180–242) | 120 (106–140) |
| Post-contrast, median (IQR) | 379 (313–434) | 532 (463–714) | 449 (346–489) | 427 (386–449) | 400 (338–474) | 357 (324–421) | 209 (173–269) |
| Absolute change, median (IQR) | 155 (125–197) | 272 (202–364) | 244 (158–280) | 191 (150–256) | 156 (66–200) | 161 (111–177) | 95 (52–150) |
| Change relative to pre-contrast signal intensity, median (IQR) | 82% (67–101) | 104% (75–117) | 119% (112–142) | 94% (67–115) | 67% (25–86) | 72% (48–89) | 96% (41–131) |
Average of the three measurements.
IQR: interquartile range.