Table 3 EBRT characteristics (n = 521)
Characteristic | Patients (%) |
|---|---|
EBRT Radiation portals | |
2 portals | 162 (31.1) |
≥ 3 portals | 359 (68.9) |
EBRT beam energy (MV) | |
< 10 | 24 (4.6) |
≥ 10 | 491 (94.2) |
Unknown | 6 (1.2) |
EBRT dose/fraction (Gy) | |
< 1.8 | 7 (1.3) |
1.8 | 131 (25.1) |
2 | 352 (67.6) |
> 2.0 | 31 (6.0) |
EBRT total radiation dose (Gy) | |
< 40 | 69 (13.2) |
40 - < 50 | 129 (24.8) |
50/50.4 | 206 (39.5) |
> 50.4 - < 60 | 52 (10.0) |
≥ 60 | 65 (12.5) |
Radiation field | |
primary only | 388 (74.5) |
primary plus regional LN | 119 (22.8) |
LN only | 5 (1.0) |
Unknown | 9 (1.7) |
CT-based treatment planning | |
Yes | 468 (89.8) |
No | 53 (10.2) |
Conformal therapy | |
Yes | 333 (63.9) |
No | 75 (14.4) |
Unknown | 113 (21.7) |
IMRT | 2 (0.38) |