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Table 1 A comparison of mean 3D-PET/CT defined volumes to 4D-PET/CT defined volumes (total n = 29)

From: Geographic miss of lung tumours due to respiratory motion: a comparison of 3D vs 4D PET/CT defined target volumes

  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