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ILD是ABR测量中较为普遍应用的一项指标,特别是在听神经瘤的诊断中是一个重要的诊断参数。部分作者报道其灵敏度可达90％以上。ILD的缺点是听力下降不对称时影响较大,特别是高频听力下降,因此提出了一些相应的校正公式,但其应用价值不大。本文就脑干病变病人、听神经瘤病人、耳蜗性聋及正常人作了ILD的比较,四组均为15人。统计结果显示:听神经瘤组ILD值明显高于脑千病变组的ILD(P=0.0035)。但脑干病变组的ILD值大于
ILD is a more commonly used indicator of ABR measurement, especially in the diagnosis of acoustic neuroma is an important diagnostic parameters. Some authors reported that its sensitivity up to 90%. The disadvantage of ILD is that hearing loss asymmetry is more affected, especially high frequency hearing loss, so some corresponding correction formulas are proposed, but its application value is not great. In this paper, patients with brain stem lesions, patients with acoustic neuroma, cochlear hearing loss and normal people made ILD comparison, four groups were 15 people. The statistical results showed that the ILD value of acoustic neuroma group was significantly higher than that of brain disease group (P = 0.0035). But the brain stem lesion group ILD value is greater than