Table 1 A comparison of mean 3D-PET/CT defined volumes to 4D-PET/CT defined volumes (total n = 29)
3D volume | 4D volume | |||
|---|---|---|---|---|
(ml) | (ml) | Diff | p value | |
GTV | 15.7 | 23.5 | 50% | 0.0013 |
PTV 5 mm | 38.5 | 53.9 | 40% | 0.0001 |
PTV 10 mm | 72.8 | 96.1 | 32% | <0.0001 |
PTV 15 mm | 119.2 | 155.9 | 31% | <0.0001 |
Asym | 85.5 | 112.0 | 31% | <0.0001 |
15 mm vs 10 mm | 119.2 | 96.1 | 19% | <0.0001 |