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Table 3 Summary of VMAT and HT plans comparing patients who underwent unilateral and bilateral mastectomy

From: Evaluation of volumetric modulated arc therapy for postmastectomy treatment

Modality Metric Unilateral mastectomy Bilateral mastectomy p-value
VMAT DV95% (Gy) 49.2 ± 0.1 49.6 ± 0.1 <0.001
DHI 0.161 ± 0.006 0.106 ± 0.014 0.001
CI 0.766 ± 0.007 0.811 ± 0.012 0.004
TCP (%) 99.8 ± 0.0* 99.8 ± 0.1 0.4
HT DV95% (Gy) 49.8 ± 0.1 50.0 ± 0.1 0.4
DHI 0.101 ± 0.007 0.082 ± 0.004 0.1
CI 0.715 ± 0.010 0.731 ± 0.013 0.4
TCP (%) 100.0 ± 0.0 100.0 ± 0.0 1.0
  1. Values shown are averages of the 15 patients (± 1σ) with the exception of the heart.
  2. *Standard deviation of the mean < 0.05.
  3. Abbreviations: TCP tumor control probability, DHI dose homogeneity index (ideal = 0), CI conformity index (ideal = 1).