Skip to main content

Table 1 PTV dose differences in lung SBRT between the CT datasets

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 −0.8 ± 0.5 0.01* −0.5 ± 0.5 0.01*
  MIP vs AIP 1.5 ± 1.4 0.01* 1.6 ± 1.5 0.01*
  MidV vs AIP 0.0 ± 0.3 0.96 −0.1 ± 0.3 0.72
  MIP vs PCT 2.4 ± 0.7 0.01* 2.2 ± 1.5 0.01*
  MidV vs PCT 0.8 ± 0.7 0.02* 0.5 ± 0.6 0.06
  MIP vs MidV 1.6 ± 1.3 0.01* 1.7 ± 1.5 0.01*
ΔD2 PCT vs AIP −0.5 ± 0.7 0.04* −0.2 ± 0.8 0.29
  MIP vs AIP 1.0 ± 1.5 0.07 1.6 ± 2.0 0.01*
  MidV vs AIP −0.1 ± 0.4 0.39 0.0 ± 0.5 0.96
  MIP vs PCT 1.5 ± 2.0 0.01* 1.9 ± 1.9 0.01*
  MidV vs PCT 0.4 ± 0.9 0.13 0.2 ± 1.1 0.33
  MIP vs MidV 1.1 ± 1.6 0.06 1.7 ± 2.0 0.01*
ΔD98 PCT vs AIP −1.4 ± 0.4 0.01* −1.1 ± 0.7 0.01*
  MIP vs AIP 1.0 ± 1.6 0.07 1.0 ± 1.4 0.02*
  MidV vs AIP 0.2 ± 0.4 0.09 0.0 ± 0.4 0.59
  MIP vs PCT 2.4 ± 1.9 0.01* 2.2 ± 1.7 0.01*
  MidV vs PCT 1.7 ± 0.6 0.01* 1.1 ± 0.7 0.01*
  MIP vs MidV 0.7 ± 1.5 0.20 1.0 ± 1.4 0.07
ΔD95 PCT vs AIP −1.3 ± 0.3 0.01* −0.9 ± 0.4 0.01*
  MIP vs AIP 1.2 ± 1.6 0.02* 1.0 ± 1.4 0.03*
  MidV vs AIP 0.2 ± 0.4 0.09 0.0 ± 0.4 0.68
  MIP vs PCT 2.5 ± 1.8 0.01* 1.9 ± 1.6 0.01*
  MidV vs PCT 1.5 ± 0.5 0.01* 0.9 ± 0.4 0.01*
  MIP vs MidV 1.0 ± 1.4 0.04* 1.0 ± 1.5 0.06
  1. Relative differences over all patients (mean ± standard deviation) of dosimetric values for PTV 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)
Back to article page

Radiation Oncology

ISSN: 1748-717X

Contact us