Table 2.
Summary of the prescription methods.
| Technique | Median Prescription Dose (Range) | Median Fractions (Range) | Prescription | Number of Tumors | (%) |
|---|---|---|---|---|---|
| 3D-CRT | 48 Gy (48.0–52.0) | 4 (4–5) | Isocenter | 37 | (35.6) |
| 3D-CRT | 45 Gy (44.4–47.5) | 4 (4) | Covering PTV of 86% isodose line | 12 | (11.5) |
| 3D-CRT | 42 Gy (42.0) | 4 (4) | PTV D95 | 1 | (1.0) |
| VMAT | 48 Gy (42.0–60.0) | 4 (4–8) | PTV D95 | 54 | (51.9) |
Abbreviations: 3D-CRT, three-dimensional conformal radiation therapy; VMAT, volumetric modulated arc therapy; D95, dose to the 95-percentage volume of the region of interest; PTV, planning target volume.