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Table 3 Quality factors (%) of s-IMRT and IMAT dose-painting by numbers plans of the first two treatment phases

From: Intensity modulated arc therapy implementation in a three phase adaptive 18F-FDG-PET voxel intensity-based planning strategy for head-and-neck cancer

  Phase I Phase II
  sIMRT IMAT sIMRT IMAT
Patient 1     
 GTVT 5.1 3.9 4.3 2.8
 GTVN1 1.8 1.5 4.6 1.4
 GTVN2 2.8 2.0   
Patient 2     
 GTVT 5.0 3.6 4.0 3.2
 GTVN1 3.1 2.9 5.3 3.8
Patient 3     
 GTVT 4.3 2.8 3.6 2.2
Patient 4     
 GTVT 4.0 4.5 2.6 3.4
Patient 5     
 GTVT 5.1 3.5 4.5 3.1
Patient 6     
 GTVT 4.6 2.9 3.2 2.8
Patient 7     
 GTVT 3.8 4.1 3.4 2.9
Patient 8     
 GTVT 4.0 2.3 4.9 2.8
 GTVN1 2.2 2.5   
 GTVN2 2.6 2.7   
Patient 9     
 GTVT 3.5 1.9 2.8 1.4
Patient 10     
 GTVT 5.1 4.1 5.1 4.2
 GTVN1 3.9 3.4 5.1 2.4
  1. Dose painting inside GTVN was done only for the cases where the PET signal was high enough
  2. Abbreviations: s-IMRT step-and-shoot IMRT, IMAT intensity modulated arc therapy, GTV T gross tumor volume of the primary tumor, GTV Nx metastatic 18F-FDG-PET-positive lymph node