Skip to main content

Table 2 Comparisons of the DVH-based parameters of the PTV in present study (n = 12).

From: Planning analysis for locally advanced lung cancer: dosimetric and efficiency comparisons between intensity-modulated radiotherapy (IMRT), single-arc/partial-arc volumetric modulated arc therapy (SA/PA-VMAT)

  IMRT SA-VMAT PA-VMAT
  mean ± SD mean ± SD p valuea mean ± SD p value b p value c
Dmind
(Gy)
62.4 ± 1.5 63.2 ± 1.3 0.179 62.5 ± 1.4 0.908 0.217
Dmaxd (Gy) 73.9 ± 1.6 73.4 ± 1.5 0.492 73.8 ± 1.6 0.919 0.555
Dmeand (Gy) 68.9 ± 1.5 68.9 ± 1.4 0.949 68.8 ± 1.5 0.840 0.783
CIe 0.62 ± 0.07 0.68 ± 0.06 0.019 0.62 ± 0.06 0.819 0.025
HIf 1.15 ± 0.04 1.11 ± 0.04 0.027 1.15 ± 0.04 0.727 0.043
  1. a: compared with the parameters of IMRT; b: compared with the parameters of IMRT; c: compared with the parameters of SA-VMAT; d: the minimum, maximum and mean irradiation dose of the PTV, respectively; e: conformity index, calculated with the fomula as we applied previously [13]; f: homogeneous index, calculated with the fomula: "HI = D5/D95";