Table 3.
Evaluation indices with standard deviation of planning target volume brain and spinal cavity
| PTV_brain | PTV_spinal cavity | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
|
|
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| 3DCRT | IMRT | VMAT | HT | PBS | 3DCRT | IMRT | VMAT | HT | PBS | |
| Dmax (SD) | 36.6 (0.4) | 37.2 (1.2) | 37.8 (1.7) | 38.1 (0.4) | 38.7 (1.2) | 37.9 (0.9) | 38.5 (1.2) | 38.9 (1.2) | 37.1 (0.9) | 38.7 (1.6) |
| Dmin (SD) | 20.5 (7.1) | 24.1 (2.9) | 25.5 (2.0) | 26.3 (1.5) | 29.8 (5.4) | 26.9 (9.1) | 27.4 (1.8) | 28.4 (1.8) | 24.7 (1.1) | 30.8 (2.4) |
| Dmean (SD) | 36.4 (0.3) | 35.1 (0.6) | 36.3 (0.8) | 35.7 (3.5) | 36.5 (0.6) | 38.4 (1.3) | 36.2 (1.4) | 36.9 (1.4) | 36.8 (1.2) | 37.5 (1.0) |
| V95% (SD) | 98.3 (0.6) | 97.6 (0.5) | 97.0 (0.5) | 99.3 (2.4) | 99.3 (1.4) | 99.3 (3.3) | 97.1 (0.9) | 97.8 (0.9) | 98.3 (1.4) | 98.3 (0.3) |
| DHI (SD) | 0.80 (0.0) | 0.88 (0.0) | 0.94 (0.0) | 0.99 (0.0) | 0.97 (0.0) | 0.79 (0.0) | 0.92 (0.0) | 0.94 (0.0) | 0.98 (0.0) | 0.94 (0.0) |
| CI (SD) | 0.90 (0.2) | 0.89 (0.0) | 0.91 (0.0) | 0.95 (0.0) | 0.94 (0.0) | 0.90 (0.4) | 0.93 (0.0) | 0.94 (0.0) | 0.96 (0.0) | 0.94 (0.0) |
3DCRT: Three-dimensional conformal radiotherapy, IMRT: Intensity-modulated radiotherapy, VMAT: Volumetric arc therapy, HT: Helical tomotherapy, PBS: Proton beam scanning, PTV: Planning target volume, SD: Standard deviation, DHI: Dose homogeneity index, CI: Conformity index