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Table 3 Differences for ipsilateral lung dose in lung SBRT

From: Dosimetric impact of different CT datasets for stereotactic treatment planning using 3D conformal radiotherapy or volumetric modulated arc therapy

   3D-CRT VMAT
  CT datasets Δ [%] P value Δ [%] P value
ΔDmean PCT vs AIP 0.6 ± 6.6 0.39 1.2 ± 6.8 0.29
  MIP vs AIP −5.6 ± 14.5 0.21 −5.6 ± 13.7 0.20
  MidV vs AIP 0.4 ± 2.8 0.80 0.4 ± 2.7 0.80
  MIP vs PCT −6.0 ± 14.9 0.13 −6.5 ± 14.1 0.06
  MidV vs PCT 0.2 ± 7.7 0.39 −0.4 ± 7.7 0.24
  MIP vs MidV −5.9 ± 14.7 0.28 −5.8 ± 13.9 0.14
ΔV30 PCT vs AIP 7.2 ± 12.7 0.07 8.9 ± 13.5 0.07
  MIP vs AIP −23.6 ± 17.0 0.01* −25.0 ± 16.5 0.01*
  MidV vs AIP −0.6 ± 2.3 0.39 −0.6 ± 2.5 0.33
  MIP vs PCT −28.0 ± 18.5 0.01* −30.4 ± 17.7 0.01*
  MidV vs PCT −6.1 ± 11.2 0.07 −7.4 ± 11.6 0.06
  MIP vs MidV −23.1 ± 16.9 0.01* −24.5 ± 16.5 0.01*
ΔV20 PCT vs AIP 3.5 ± 10.2 0.07 4.9 ± 10.6 0.07
  MIP vs AIP −22.2 ± 15.4 0.01* −22.4 ± 14.1 0.01*
  MidV vs AIP −0.9 ± 3.4 0.17 −0.9 ± 3.4 0.17
  MIP vs PCT −24.4 ± 16.1 0.01* −25.5 ± 15.2 0.01*
  MidV vs PCT −3.3 ± 10.7 0.07 −4.6 ± 10.6 0.07
  MIP vs MidV −21.4 ± 15.4 0.01* −21.6 ± 14.1 0.01*
ΔV10 PCT vs AIP 1.6 ± 9.1 0.24 1.9 ± 9.8 0.29
  MIP vs AIP −20.8 ± 11.7 0.01* −21.8 ± 12.7 0.01*
  MidV vs AIP −1.2 ± 4.3 0.17 −1.2 ± 4.5 0.20
  MIP vs PCT −21.8 ± 11.1 0.01* −23.0 ± 11.9 0.01*
  MidV vs PCT −2.0 ± 10.2 0.11 −2.2 ± 10.9 0.14
  MIP vs MidV −19.7 ± 12.1 0.01* −20.7 ± 12.8 0.01*
  1. Relative differences for ipsilateral lung dose (mean ± standard deviation) in lung SBRT between the different CT datasets for 3D-CRT and VMAT plans. PCT planning CT, AIP average intensity projection CT, MIP maximum intensity projection CT, MidV mid-ventilation CT. *assigns statistical significant values (p < 0.05)