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. Author manuscript; available in PMC: 2016 Nov 1.
Published in final edited form as: Ann Otol Rhinol Laryngol. 2015 Jun 17;124(11):903–910. doi: 10.1177/0003489415591205

Figure 1. ABR threshold shift as a function of post-irradiation time.

Figure 1

Mean ABR threshold shifts plotted at 2 days (x), 4 days (square), 6 days (cross), and 8 days (triangle) post-irradiation in 60 Gy (A), 40 Gy (B), 20 Gy (C), and 10 Gy (D) groups. For variance, see Table 1. Overall, there was a significant threshold shift noted in mice exposed to 20 Gy, 40 Gy, and 60 Gy. The hearing loss was progressive beginning in the high frequencies at 4 days post-irradiation in the 40 and 60 Gy groups but not until 6 days post-irradiation in the 20 Gy group. The degree of hearing loss was dependent upon the Gy level exposure. No significant threshold shift occurred in mice exposed to 10 Gy.