Table 1 Characteristics of the 90-patient cohort
Characteristic | Number of patients/Median value (Range) | P* | |
|---|---|---|---|
IMRT | VMAT | ||
Diagnosis | 0.49 | ||
 Glioblastoma | 44 | 43 |  |
 Oligodendroglioma | 1 | 0 | |
 Astrocytoma | 0 | 2 | |
Tumor Location | 0.32 | ||
 Frontal | 14 | 23 |  |
 Occipital | 2 | 1 | |
 Parietal | 8 | 6 | |
 Temporal | 13 | 6 | |
 Thalamus | 1 | 1 | |
 2 or more lobes | 7 | 8 | |
Tumor Side | 0.34 | ||
 Bilateral | 4 | 5 |  |
 Left | 24 | 17 | |
 Right | 17 | 23 | |
bPTV Volume (cc) | 85.1 (11.0–328.5) | 81.4 (28.3–285.3) | 0.94 |
PTV Volume (cc) | 359.3 (128.9–779.1) | 370.8 (193.9–877.5) | 0.18 |
Brain Volume (cc) | 1301.5 (1022.2–1849.0) | 1326.9 (1016.0–1658.6) | 0.23 |
# Beams | <0.001 | ||
 2 | 0 | 38 |  |
 3 | 0 | 7 | |
 5 | 43 | 0 | |
 6 | 2 | 0 | |
# Couch Angles | <0.001 | ||
 1 | 0 | 39 |  |
 2 | 0 | 6 | |
 4 | 45 | 0 | |
Multileaf Collimator | 0.02 | ||
 High Definition | 33 | 42 |  |
 Standard | 12 | 3 | |
# Monitor Units | 347 (285–487) | 453 (274–665) | <0.001 |
Treatment Time | 15.0 (7.7–21) | 10.0 (6.3–15.3) | <0.001 |