Table 1 The definition of gross tumor volume (GTV), margins to define the clinical target volume (CTV) and PTV in each direction
Institute | Gross tumor volume (GTV) | GTV to CTV margin [mm] | CTV to PTV margin [mm] | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A | P | S | I | L | R | A | P | S | I | L | R | ||
A | Prostate and proximal 20 mm of SV | 0 | 3 | 3 | 0 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 |
B | Prostate and proximal 15 mm of SV | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 5 | 8 | 8 | 8 | 8 |
C | Prostate and proximal 10 mm of SV | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 4 | 6 | 6 | 6 | 6 |
D | Prostate | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
E | Prostate and the half of SV | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 6 | 8 | 8 | 8 | 8 |