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Table 1 Dose-volume parameters (a) and conformity indices (b) for the optimized planning target volume (PTV optim )

From: Whole breast radiotherapy in prone and supine position: is there a place for multi-beam IMRT?

  D2[Gy] D98[Gy] Dose homogeneity [%]
  Prone Supine Prone Supine Prone Supine
  mean SEM SD mean SEM SD mean SEM SD mean SEM SD mean SEM SD Mean SEM SD
(a)
W-TF 52.3 0.1 0.6 53.1 0.2 0.9 47.6 <0.1 0.1 47.9 <0.1 0.4 90.6 0.3 1.1 89.7 0.5 2.1
TF-IMRT 52.0 0.2 0.8 52.6 0.2 0.8 47.8 <0.1 0.3 47.9 0.1 0.5 91.8 0.4 1.7 90.7 0.5 2.3
MB-IMRT 51.6 0.2 0.7 52.6 0.1 0.6 47.9 <0.1 0.2 47.7 <0.1 0.2 92.5 0.3 1.4 90.3 0.3 1.2
  Jaccard index [%] Dose-coverage index [%] Mismatch index [%]
  Prone Supine Prone Supine Prone Supine
  mean SEM SD mean SEM SD mean SEM SD mean SEM SD mean SEM SD mean SEM SD
(b)
W-TF 74.9 2.0 8.5 52.9 3.6 15.2 97.2 0.2 1.0 96.2 0.6 2.4 23.9 2.0 8.6 46.8 3.6 15.4
TF-IMRT 74.8 1.5 6.2 64.6 2.1 8.9 97.7 0.2 0.8 96.6 0.3 1.2 24.4 1.5 6.4 34.7 2.1 9.1
MB-IMRT 77.1 1.4 5.9 70.5 1.6 6.7 97.8 0.1 0.6 96.5 0.2 1.0 22.1 1.4 6.0 28.5 1.6 6.8
  1. Abbreviations: SEM Standard error of the mean, SD Standard deviation, W-TF Wedged tangential fields, TF-IMRT Tangential field intensity-modulated radiation therapy, MB-IMRT Multi-beam intensity-modulated radiation therapy.