Assessment of ASL valuesa in GBM by manual ROIs
| maxASLtumorb | Controlc | P Value (t test)d | RL/N | |
|---|---|---|---|---|
| Pattern 1 (n = 30)e | 74.53 ± 27.48 | 35.17 ± 10.62 | <.001 | 2.27 ± 0.99 |
| Pattern 2 (n = 23)f | 32.51 ± 22.23 | 39.31 ± 17.28 | .25 | 0.81 ± 0.37 |
| P value (t test)d | <.001 | .29 | – | <.001 |
Note:—RL/N indicates lesion-to-normal brain ratio.
↵a Measured in mL/100 g/min.
↵b Maximal ASL values in the tumor tissue.
↵c ASL values taken from the contralateral hemisphere.
↵d P < .05 denotes statistical significance.
↵e CBF map with hyperperfused tumor tissue.
↵f CBF map with no substantial hyperperfused tumor tissue.