9 / 945
Inter-observer variations in delineation due to
limited soft-tissue contrast
Fiorino et al. 1998; Radiother. Oncol. 47:285-292
Leunens et al. 1993; Radiother.
Oncol. 29:169-175
UMC Utrecht data:
5 observers delineate
prostate on CT; standard
deviations of up to 4 mm