Fig. 2
From: Interobserver variability in organ at risk delineation in head and neck cancer
Mean surface distances for the different OARs. This figure shows better agreement with the reference contour when the guidelines from Brouwer et al. are used (yellow). Diamond shape markers represent outliers (more than 1.5 × interquartile range above the upper quartile and below the lower quartile). mm millimetre, MSD mean surface distance, PCM pharyngeal constrictor muscle, SMG submandibular gland