Values of cerebral blood flow (CBF), cerebral blood volume (CBV), mean transit time (MTT), and mean diffusivity 〈D〉 for the entire volume of nonenhancing peritumoral edematous brain pre- and postdexamethasone treatment for the 7 patients who had regions of edema on T2-weighted EPI
| Patient No. | Peritumoral Edematous Brain | |||||||
|---|---|---|---|---|---|---|---|---|
| CBF (mL/100 g/min) | CBV (mL/100 g) | MTT (s) | <D> (×10−6 mm2/s) | |||||
| Presteroids | Poststeroids | Presteroids | Poststeroids | Presteroids | Poststeroids | Presteroids | Poststeroids | |
| 1 | 16.3 ± 6.7 | 18.1 ± 7.7 | 1.5 ± 0.7 | 1.0 ± 0.4 | 3.7 ± 1.1 | 2.3 ± 0.6 | 1465 ± 231 | 1401 ± 196 |
| 3 | 19.8 ± 11.7 | 24.1 ± 13.9 | 1.9 ± 1.4 | 2.0 ± 1.4 | 3.7 ± 1.1 | 3.2 ± 0.9 | 1484 ± 275 | 1407 ± 262 |
| 4 | 20.8 ± 7.2 | 22.3 ± 7.9 | 1.6 ± 0.6 | 1.7 ± 0.6 | 3.1 ± 0.7 | 3.1 ± 0.5 | 1153 ± 167 | 1081 ± 146 |
| 6 | 19.8 ± 11.6 | 24.4 ± 15.3 | 1.4 ± 1.0 | 2.3 ± 1.5 | 2.9 ± 0.8 | 4.2 ± 2.9 | 1537 ± 237 | 1418 ± 232 |
| 7 | 20.7 ± 15.8 | 24.2 ± 19.1 | 1.8 ± 1.4 | 1.8 ± 1.4 | 3.7 ± 1.6 | 3.0 ± 0.8 | 1578 ± 268 | 1466 ± 262 |
| 8 | 17.1 ± 5.1 | 14.6 ± 3.5 | 1.2 ± 0.4 | 1.0 ± 0.3 | 3.6 ± 1.3 | 2.6 ± 0.3 | 1627 ± 106 | 1542 ± 136 |
| 9 | 14.4 ± 9.5 | 16.7 ± 9.4 | 1.3 ± 0.9 | 1.7 ± 1.0 | 3.7 ± 0.6 | 4.2 ± 1.3 | 1290 ± 193 | 1209 ± 197 |
| Mean | 18.4 ± 2.5 | 20.6 ± 4.1 | 1.5 ± 0.3 | 1.6 ± 0.5 | 3.4 ± 0.4 | 3.2 ± 0.7 | 1448 ± 169 | 1361 ± 159 |
| ε (%); P | 11.6 ± 12.8; .05 | 7.2 ± 30.5; .53 | −2.8 ± 25.8; .67 | −6.0 ± 1.2; <.001 | ||||
All values are reported as mean (±SD). The mean volume of edematous brain was 62.4 ± 52.7 × 103 mm3.