Incidence of Cisplatin Induced Ototoxicity in Adults with Head and Neck Cancer

Table 4

Cochlear radiation doses and associated hearing examination classified with the Chang criteria.

Cochlear max dose (Gy), left	Cochlear mean dose (Gy), left	Left pretreatment/posttreatment Chang classification	Cochlear max dose (Gy), right	Cochlear mean dose (Gy), right	Right pretreatment/posttreatment Chang classification
53.9	42.2	4/4	48.6	39.5	0/1a
6.3	2.9	1a/1a	14.1	9	2b/4
3.2	2.2	4/4	3	2.1	3/3
2.7	2.4	2a/2b	3.3	2.8	2b/2b
65.3	47.6	4/4	64.8	46.8	0/1a
30	30	2b/4	30	30	2b/3