Figure 4From: Head and neck region consolidation radiotherapy and prophylactic cranial irradiation with hippocampal avoidance delivered with helical tomotherapy after induction chemotherapy for non-sinonasal neuroendocrine carcinoma of the upper airwaysPlanning results in terms of isodoses distribution with organs at risk sparing, namely hippocampus (Figure 4a-d), spinal cord (Figure 4a), parotid glands (Figure 4b), ocular bulbs and lens (Figure 4c).Back to article page