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Table 2 Summary of PTV coverage data for VMAT-S, IMRT and HT plans x ¯ ± σ

From: SmartArc-based volumetric modulated arc therapy for endometrial cancer: a dosimetric comparison with helical tomotherapy and intensity-modulated radiation therapy

  PTV95(%) PTV100(%) PTV105(%) PTV110(%) Dmean(Gy) CI HI
Mean (VMAT-S) 99.82 95.10 40.50 0.00 52.01 0.89 1.06
Mean (IMRT) 99.91 95.60 67.10 5.30 52.51 0.87 1.10
P 0.53 0.68 0.03 0.01 0.51 0.07 0.01
Mean (HT) 99.61 95.80 16.70 0.20 51.45 0.87 1.07
P 0.37 0.83 0.00 0.71 0.08 0.06 0.25
  1. PTV: planning target volume, VMAT-S: volumetric modulated arc therapy with SmartArc, IMRT: intensity-modulated radiotherapy, HT: helical tomotherapy, Dmean: mean dose, CI: conformity index, HI: homogeneity index.