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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