Fig. 1From: Determining appropriate timing of adaptive radiation therapy for nasopharyngeal carcinoma during intensity-modulated radiation therapyCentroid displacements of the parotid glands. Centroid displacements of the left (left part) and right parotid gland (right part) in the RL, AP, and SI directions throughout the entire treatment course. Lt=left, Post = posterior, Sup = superior, Rt = right, Ant = anterior, Inf = inferiorBack to article page