Skip to main content
. Author manuscript; available in PMC: 2019 Mar 15.
Published in final edited form as: World Neurosurg. 2012 Apr 5;80(3-4):359–363. doi: 10.1016/j.wneu.2012.04.001

Table 4.

Risk of Hearing Loss and Cochlear Irradiation

Dose to Cochlea (Gy3) (Equivalent Single Session Doses*) Volume Radiation C
6 (4.2) 0.92 [0.85–0.99] 1.03 [0.97–1.10] 0.65
8 (5.4) 0.91 [0.85–0.98] 1.04 [0.99–1.09] 0.69
10 (6.6) 0.91 [0.85–0.97] 1.05 [1.01–1.09] 0.73
12 (7.8) 0.91 [0.86–0.97] 1.05 [1.02–1.08] 0.75
14 (9.0) 0.93 [0.87–0.98] 1.05 [1.01–1.08] 0.74
16 (10.1) 0.94 [0.89–0.99] 1.04 [0.99–1.09] 0.66
18 (11.3) 0.94 [0.89–0.99] 1.08 [0.96–1.21] 0.63

Odds ratio estimates, Wald confidence limits (in brackets), and C statistics for each bivariate model for risk of hearing loss per mm3 cochlea.

*

Radiobiologically equivalent single session dose was calculated using the linear-quadratic mode and α/β ratio of 3.