From: Dosimetric impact of target definitions on normal structures in head and neck cancer
 | RTOG | 3Dose | p |
---|---|---|---|
Volumes (cc) | Â | Â | Â |
   PTV-HD | 293.6 | 111.6 | <0.001 |
   PTV-ED | 704.8 | 545.2 | <0.001 |
   PTV Total | 998.4 | 837.3 | <0.001 |
Doses | Â | Â | Â |
   PTV-ED heterogeneity (%) |  |  |  |
110% | 36.549 | 14.870 | 0.002 |
115% | 15.086 | 2.716 | <0.001 |
   93% Target Coverage (%) |  |  |  |
PTV-HD | 99.823 | 99.994 | 0.049 |
PTV-ED | 99.449 | 99.705 | 0.06 |
   Mean Target Doses (cGy) |  |  |  |
PTV-HD | 7357.63 | 7240.90 | 0.01 |
PTV-ED | 6099.57 | 5935.40 | 0.001 |
PTV Total | 6468.31 | 6281.12 | <0.001 |
   Mean MUs | 1675 | 1556 | 0.01 |