Figure 3From: 3D Variation in delineation of head and neck organs at riskDelineation variation of a parotid gland and a glottic larynx. Left parotid gland and glottic larynx delineations in a typical cranial (a and d), central (b and e) and caudal (c and f) transverse CT slice. Each colour corresponds to one observer.Back to article page