Skip to main content

Table 2 Volumetric and length comparison of GTV, ITV and PTV structures; there were no statistically significant differences (Mann-Whitney Test) between the volumes/lengths when comparing structures from the 3D PET-CT to the 4D CT and structures from the 4D PET-CT to the 4D CT

From: Respiratory-gated (4D) contrast-enhanced FDG PET-CT for radiotherapy planning of lower oesophageal carcinoma: feasibility and impact on planning target volume

  Volume (cm3) Length (cm)
  GTV ITV PTV GTV ITV PTV
4D CT 108.1 271.8 528.4 5.4 10.0 10.9
3D PET-CT 82.6 239.8 472.5 6.4 10.1 11.1
p-value 0.89 0.95 0.95 0.52 0.8 0.7
4D PET-CT 88.3 236.0 480.6 5.1 9.6 10.6
p-value 0.85 0.57 0.75 0.95 0.7 0.85
  1. GTV gross tumour volume, ITV internal target volume, PTV planning target volume