Table 5.
Details of the dosimetric unacceptable deviations of HA-WBRT according to RTOG 0933 dosimetric constraints (22)
| Patient | Hippo | UD Value | Max value | Excess over 0933 UD as percentage | Comments |
|---|---|---|---|---|---|
| 1 | Right | Dmax (> 17 Gy) |
17.85 Gy | 5.0% | RT given prior to RTOG 0933 constraints being published |
| 2 | Right | Dmin (> 10 Gy) |
10.4 Gy | 4.0% | RT given prior to RTOG 0933 constraints being published |
| 3 | Left | Dmax (> 17 Gy) |
17.24 Gy | 1.4% | Multiple dosimetry has been realized to decrease the Dmax on left hippocampus. This patient had D2%Left_hippo of 14.05 Gy |
| 4 | Right | Dmin (> 10 Gy) |
10.33 Gy | 3.3% |
Dmax Maximum dose, Dmin Minimum dose, HA-WBRT Hippocampal avoidance during whole brain radiotherapy, Hippo Hippocampus, Max Maximum, MBM Melanoma brain metastases, RT Radiotherapy, SIB Simultaneous integrated boost, SRS Radiosurgery, UD Unacceptable deviation (22)