Table 5.
Results of error detection and classification
| Treatment site | Patient no. | Number of fractions operated with Watchdog | Overall % under control limit | % Under condition of error detection | ||||
|---|---|---|---|---|---|---|---|---|
| Clinical | Non-clinical | |||||||
| Patient related delivery errors | Transfer and machine errors | Watchdog system errors | Acquisition errors | Watchdog user errors | ||||
| Prostate | 1 | 31 | 4.4 % | 1.9 % | 0.0 % | 1.5 % | 0.3 % | 0.8 % |
| 2 | 30 | 6.9 % | 3.7 % | 0.0 % | 1.8 % | 0.1 % | 1.2 % | |
| 3 | 30 | 4.9 % | 1.7 % | 0.0 % | 2.7 % | 0.1 % | 0.5 % | |
| 4 | 35 | 6.1 % | 2.5 % | 0.0 % | 2.1 % | 0.3 % | 1.3 % | |
| 5 | 31 | 5.6 % | 1.6 % | 0.0 % | 3.4 % | 0.1 % | 0.4 % | |
| Head and neck | 1 | 29 | 2.9 % | 1.8 % | 0.0 % | 0.6 % | 0.3 % | 0.2 % |
| 2 | 32 | 23.7 % | 11.2 % | 0.0 % | 8.5 % | 2.5 % | 1.5 % | |
| 3 | 33 | 0.0 % | 0.0 % | 0.0 % | 0.0 % | 0.0 % | 0.0 % | |
| 4 | 27 | 7.1 % | 0.9 % | 0.0 % | 4.7 % | 0.1 % | 1.4 % | |
| 5 | 28 | 9.7 % | 6.8 % | 0.0 % | 1.4 % | 0.6 % | 0.8 % | |
| Rectum | 1 | 20 | 0.0 % | 0.0 % | 0.0 % | 0.0 % | 0.0 % | 0.0 % |
| 2 | 14 | 13.3 % | 7.9 % | 0.0 % | 2.0 % | 1.8 % | 1.6 % | |
| 3 | 25 | 4.9 % | 1.3 % | 0.0 % | 1.8 % | 0.2 % | 1.6 % | |
| 4 | 24 | 7.0 % | 1.3 % | 0.0 % | 3.8 % | 0.2 % | 1.6 % | |
| 5 | 29 | 8.4 % | 4.3 % | 0.0 % | 2.9 % | 0.1 % | 1.2 % | |