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Table 1 Volumetric properties of the GTVs for the 10 head and neck cancer subjects

From: Deformable versus rigid registration of PET/CT images for radiation treatment planning of head and neck and lung cancer patients: a retrospective dosimetric comparison

  Primary gross tumor volume Secondary gross tumor volume
Subject VRIR VDIR VOverlap DSC VRIR VDIR VOverlap DSC
(cm3) (cm3) (cm3) (cm3) (cm3) (cm3)
1 20.1 15.2 14.3 0.81 12.1 8.1 8.0 0.79
2 52.3 48.0 41.3 0.82 1.4 1.4 1.2 0.86
3 25.3 23.3 22.0 0.91 9.9 8.3 8.6 0.90
4 7.8 8.7 7.4 0.90 3.7 3.8 3.3 0.88
5 18.6 18.9 14.2 0.76 20.4 23.4 16.8 0.77
6 102.9 91.5 87.3 0.90 6.3 5.5 5.4 0.92
7 0.1 0.1 0.0 0.00 na na na na
8 4.4 5.6 3.9 0.78 na na na na
9 26.7 19.1 18.2 0.79 1.1 1.0 0.8 0.76
10 10.4 10.7 9.0 0.85 7.2 7.1 5.8 0.81
  1. The volumes corresponding to the GTVs drawn using the rigid and deformable image registration are labeled as VRIR and VDIR, respectively. The acronym “na” means the GTV was not available.