Table 1 Patient and treatment related characteristics.
Error type | Interfractional error | Intrafractional error | ||||
|---|---|---|---|---|---|---|
Setup type | Skin marks | OSMS | OSMS | |||
n | % | n | % | n | % | |
Number of radiotherapy fractions | 745 | – | 1558 | – | 819 | – |
Total number of target volumes | 59 | – | 140 | – | 69 | – |
Number of patients | 51 | – | 132 | – | 69 | – |
Anatomical region of target volumes (number of target volumes (number of patients)) | ||||||
Head and Neck (closed mask) | 13 (13) | 22.0 | – | – | – | – |
Head and Neck (open mask) | – | – | 31 (31) | 22.1 | 13 | 18.8 |
Thorax | 23 (22) | 39.0 | 41 (41) | 29.3 | 20 | 29.0 |
Abdomen | 16 (14) | 27.1 | 55 (53) | 39.3 | 26 | 37.7 |
Pelvis | 7 (7) | 11.9 | 13 (13) | 9.3 | 10 | 14.5 |
Fractionation regimen (number of target volumes (number of patients)) | ||||||
Conventional fractionation | 21 (21) | 35.6 | 23 (23) | 16.4 | 10 | 14.5 |
Hypofractionation | 32 (26) | 54.2 | 96 (93) | 68.6 | 52 | 75.4 |
SBRT | 6 (5) | 10.2 | 21 (20) | 15.0 | 7 | 10.1 |
Gender (number of target volumes (number of patients)) | ||||||
Female | 26 (25) | 44.1 | 67 (64) | 47.9 | 38 | 55.1 |
Male | 33 (26) | 55.9 | 73 (68) | 52.1 | 31 | 44.9 |
Age | ||||||
Mean (SD) | 56 | (17) | 55 | (13) | 54 | (12) |
Weight | ||||||
Mean (SD) | 64 | (13) | 64 | (14) | 62 | (12) |
BMI | ||||||
Mean (SD) | 23 | (4) | 23 | (4) | 22 | (3) |
