Results
No other abnormal lesions were detected in the brain or inner ear. The images of all patients were clear, and structures such as the cochlea, vestibule, semicircular canal, and IAC could be distinctly identified. In all cases, there was enhancement of the perilymphatic space with a clear demarcation between endolymph and perilymph; furthermore, varying degrees of EH were observed in each patient (Figure1b ). The signal intensity at the IAC bottom is illustrated in Figure 2 . The low, middle, and high tone were 57.72±16.10 dB, 56.16±19.87 dB, 66.20±17.56 dB, respectively. Cochlear and vestibular hydrops were 0.39±0.20 and 0.44±0.17, respectively. The signal intensity ratios of the affected and unaffected internal auditory channels were 4.72±0.70 and 3.76±0.80, respectively.
The signal intensity ratio of the IAC on the affected side exhibited a statistically significant increase compared to that on the unaffected side (Figure3 ). The Pearson correlation analysis revealed a significant positive correlation between the hearing threshold of low, middle and high tones and the signal intensity ratio of the IAC bottom (Table 1 ). The scatter diagram depicting this relationship is presented in Figure 4 . The signal intensity of the IAC bottom did not show a significant correlation with cochlear and vestibular hydrops (Table 1 ).