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Table 3 Average contouring errors for prostate (P) or prostate with seminal vesicles (PSV) in anterior (vrt/anterior), posterior (vrt/posterior), longitudinal (long) and lateral (lat) direction

From: PTV margin definition in hypofractionated IGRT of localized prostate cancer using cone beam CT and orthogonal image pairs with fiducial markers

  P (mm) PSV (mm)
vrt 1.52 2.57
vrt/anterior 1.98 3.49
vrt/posterior 1.04 1.58
Long 2.03 3.20
Lat 1.68 2.52