Table 2 The incidences of SNHL and the inner ear mean radiation dose (IMRT)
From: Sensorineural hearing loss after concurrent chemoradiotherapy in nasopharyngeal cancer patients
Mean radiation doses | Total 54 ears | SNHL at 4 Hz (ears) | SNHL at PTA (ears) |
|---|---|---|---|
Cochlea mean dose | Â | Â | Â |
≤ 50 Gy | 24 | 6/24 (25%) | 0/24 (0%) |
> 50 Gy | 30 | 14/30 (46.67%) | 4/30 (13.3%) |
Inner ear mean dose | Â | Â | Â |
≤ 45 Gy | 29 | 8/29 (27.59%) | 0/29 (0%) |
> 45 Gy | 25 | 12/25 (48%) | 4/25 (16%) |
IAC mean dose | Â | Â | Â |
≤ 50 Gy | 31 | 8/31 (25.81%) | 0/31 (0%) |
> 50 Gy | 23 | 12/23 (52.17%) | 4/23 (17.4%) |