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Table 3 Lung target volume

From: Intensity-modulated radiation therapy using static ports of tomotherapy (TomoDirect): comparison with the TomoHelical mode

  Tomohelical Tomodirect p-value
   (Mean ± standard deviation)  
Patient number 18  
PTV* (cc) 289 ± 327  
Modulation factor 1.8 - 2.2  
Pitch 0.172 - 0.43  
Field width 2.5 - 5.02  
Conformity index 2.33 ± 0.13 3.24 ± 0.30 0.009
Uniformity index 1.08 ± 0.01 1.06 ± 0 01 0.61
D95% (%) 95± 1 96 ± 1 0.23
Time (sec) 217 ± 16 235 ± 21 0.3
Lung MLD (Gy) 10 ± 1 11 ± 1 0.68
  V5 Gy (%) 43 ± 3 30 ± 3 0.005
  V10 Gy (%) 29 ± 2 23 ± 2 0.1
  V20 Gy (%) 16 ± 2 18 ± 2 0.55
  V30 Gy (%) 10 ± 1 13 ± 2 0.15
  V40 Gy (%) 7 ± 1 8 ± 1 0.25
  V50 Gy (%) 4 ± 1 6 ± 1 0.14
Cord (maximum dose) 36 ± 3 38 ± 3 0.33
  1. *PTV, planning target volume.
  2. MLD, mean lung dose.