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Table 3 Rectal area and volume correlations with SV movements

From: Seminal vesicle interfraction displacement and margins in image guided radiotherapy for prostate cancer

  Rectal contour using Method 1* Rectal contour using Method 2*
Rectal area Rectal volume Rectal area Rectal volume
Average correlations (R2) SD Average correlations (R2) SD Average correlations (R2) SD Average correlations (R2) SD
Ant/Post LSV 0.40 0.23 0.37 0.22 0.38 0.24 0.35 0.21
  RSV 0.36 0.19 0.35 0.16 0.35 0.21 0.33 0.17
Sup/Inf LSV 0.20 0.17 0.22 0.19 0.21 0.18 0.23 0.19
  RSV 0.22 0.17 0.23 0.19 0.20 0.16 0.24 0.20
Left/Right LSV 0.19 0.19 0.19 0.19 0.21 0.20 0.17 0.18
  RSV 0.18 0.18 0.15 0.18 0.20 0.18 0.15 0.17
  1. * Rectal contouring methods have been described in the Methods and Materials section.