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Table 2 Summary of DVH-based analysis for the PTV

From: Post mastectomy linac IMRT irradiation of chest wall and regional nodes: dosimetry data and acute toxicities

Parameters Plans Value (Mean±SD) P-value
Dnear-max (Gy) All 54.76±0.97  
  Integrated 54.57±0.88 0.047
  Segmented 55.01±1.05  
Dnear-min (Gy) All 47.53±0.63  
  Integrated 47.56±0.70 0.622
  Segmented 47.48±0.47  
Dmean (Gy) All 51.76±0.41  
  Integrated 51.68±0.35 0.011
  Segmented 51.94±0.47  
V95% All 98%±1%  
  Integrated 98%±1% 0.193
  Segmented 98%±1%  
V107% All 9%±6%  
  Integrated 7%±5% 0.003
  Segmented 11%±6%  
V110% All 2%±1%  
  Integrated 2%±2% 0.023
  Segmented 3%±2%  
HI All 0.13±0.02  
  Integrated 0.13±0.01 0.069
  Segmented 0.14±0.02  
CI All 1.43±0.15  
  Integrated 1.41±0.14 0.053
  Segmented 1.47±0.15  
  1. Abbreviations: PTV: planning target volume; D near-max : maximum dose; D near-min : minimum dose; Dmean: mean dose; CI: conformity index; HI: homogeneity index; Vx%: percent volume of PTV receiving x% of prescription dose; IMN: internal mammary nodes.