1104 / 1196
Numbers differ with gender, orientation and short/long course
Biggest uncertainty upper ventral side of mesorectum
No strong correlation with bladder, but with rectum filling
Group mean
Random error, σ
Systematic error, Σ
Nijkamp et al. (2009, 2009, 2012),
Radiother
. Oncol.
Geometrical uncertainties rectum