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Table 2 Homogeneity and Conformity Index of Target Volumes

From: Intensity-modulated radiation therapy (IMRT) vs. 3D conformal radiotherapy (3DCRT) in locally advanced rectal cancer (LARC): dosimetric comparison and clinical implications

   HI CI
   c3DCRT f3DCRT IMRT c3DCRT f3DCRT IMRT
GTV mean 0.8 0.8 1.1    
  SD 0.2 0.2 0.3    
  p p 1 < 0.05 p 2 < 0.05 Ref    
PTV mean 1.1 1.1 1.6 0.5 0.6 0.8
  SD 0.1 0.2 0.3 0.1 0.1 0.1
  p p 1 < 0.05 p 2 < 0.05 Ref p 1 < 0.05 p 2 < 0.05 Ref
  1. HI: homogeneity index;
  2. CI: Conformity index
  3. c3DCRT: classic tridimensional conformal radiotherapy;
  4. f3DCRT: fitting tridimensional conformal radiotherapy,
  5. IMRT: intensity modulated radiation therapy;
  6. GTV: gross tumor volume;
  7. CTV: clinical target volume;
  8. PTV: planning target volume;
  9. p 1: c3DCRT vs IMRT;
  10. p 2: f3DCRT vs IMRT;
  11. Ref:Referencevalue