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Table 3 Maximum spinal cord dose and mean mandibular dose (Gray) in the study group and historical control group for oropharyngeal, oral cavity, and laryngeal-hypopharyngeal cancers

From: Feasibility of image-guided radiotherapy based on helical tomotherapy to reduce contralateral parotid dose in head and neck cancer

Site Spinal cord Mandibular
  Study Control p value Study Control p value
Oropharynx 35.2 39.3 0.1 39.2 44.9 0.4
Oral cavity 33.6 36.9 0.1 55.4 57.2 0.4
Larynx and hypopharynx 34.2 36.1 0.5 30 31.8 0.8