头颅磁共振成像检查在以突发性聋为首发症状患者病因诊断价值中的研究

Value of brain MRI in the diagnosis of patients with sudden sensorineural hearing loss as the first symptom

突发性聋是突然发生的听力下降，有急性发作（多在72h内）、病因复杂的牦点，可由一种或多种病因同时引起，也可作为多种疾病的首发症状出现，如急性脑血管事件，有研究表明突发性聋治疗有效时间窗是2～4周，因此需要对其进行早期诊断、治疗。针对突发性聋患者的听力学检查主要是纯音测听、听性脑干反应试验、耳声发射、40Hz听觉相关电位等，影像学检查主要是磁共振成像检查。本文主要以突发性聋为首发症状患者病因及头颅MRI在其中的应用价值进行综述。

Sudden sensorineural hearing loss appeared as acute attack （fewer than 72 hours） and with complex symptoms, which could be caused by one or more reasons at the same time, and it could also be the first symptom of many diseases, such as acute cerebrovascular events. Studies have found its treatment time window was 2 to 4 weeks, so it was of importance to make early diagnosis and treatment. The audiologic examination of sudden deafness contained auditory brain response （ABR）, otoacoustic emission, 40 Hz auditory correlation potential, etc. The imaginology examination mainly used magnetic resonance imaging. This was a review of the etiology of the diseases with sudden deafness as the first symptom and the value of brain MRI in these diseases.