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Table 3 Dosimetric parameters for the organ at risk

From: A prospective cohort study on postoperative radiotherapy with TomoDirect using simultaneous integrated boost technique in early breast cancer

Organ at risk Mean value
Ipsilateral lung  
Mean dose (Gy) 4.72 ± 5.16
V50Gy (%) 0.93 ± 0.88
V40Gy (%) 3.57 ± 1.93
V30Gy (%) 5.33 ± 2.32
V20Gy (%) 7.23 ± 2.95
V10Gy (%) 9.42 ± 3.56
Heart  
Mean dose (Gy) 1.09 ± 0.85
V50Gy (%) 0.11 ± 0.36
V40Gy (%) 0.31 ± 0.71
V30Gy (%) 0.54 ± 1.05
V20Gy (%) 0.87 ± 1.50
V10Gy (%) 1.21 ± 1.84
Contralateral breast  
Mean dose (Gy) 0.19 ± 0.11
V50Gy (%) 0.04 ± 0.07
V40Gy (%) 0.08 ± 0.13
V30Gy (%) 0.17 ± 0.26
V20Gy (%) 0.25 ± 0.31
V10Gy (%) 0.42 ± 0.54
  1. V nGy percentage of the volume receiving radiation ≥ n Gy.