Table 2.
Classification of SRS and SBRT clinical plans based on treatment planning techniques
| Classification | Group A: SRS DCAT† |
Group B: SRS VMAT‡ |
Group C: SBRT DCAT |
Group D: SBRT VMAT |
|---|---|---|---|---|
| Total No. of plans | 20 | 8 | 6 | 20 |
| Total No. of fields | 123 | 47 | 12 | 50 |
| Prescribed dose/fraction (range) (Gy) | 15–24 | 12.5–22 | 10–18 | 8.5–12 |
| Delivered monitor unit/field (range) (MU) | 260–1372 | 312–2181 | 313 - 1638 | 125–2162 |
| PTV* (mean ± SD) (cm3) | 0.78 ± 0.70 | 1.23 ± 1.01 | 8.26 ± 3.71 | 12.88 ± 4.23 |
*Planning target volume
†Dynamic conformal arc therapy
‡Volumetric modulated arc therapy