Orloff L A, Duckert L G
Department of Otolaryngology-Head and Neck Surgery, University of Washington School of Medicine, Seattle, USA.
Laryngoscope. 1995 May;105(5 Pt 1):465-71. doi: 10.1288/00005537-199505000-00002.
The facial nerve is often injured in head trauma. Computed tomography (CT) is the diagnostic study most frequently used to evaluate temporal bone fractures, but it does not demonstrate all soft tissues well. Recently, magnetic resonance imaging (MRI) has been used to evaluate certain soft tissues, including cranial nerves. Experience with MRI evaluation of temporal bone trauma is limited and consists primarily of anecdotal reports. This study assesses the accuracy of MRI in evaluating experimentally induced acute intratemporal facial nerve lesions. The tympanic segments of the right facial nerve in nine rabbits were contused, and MRI scans were performed without and with gadolinium-diethyl-triamine-pentaacetic acid (Gd-DTPA) at varying intervals after surgery. MRI with Gd-DTPA accurately identified the lesion site in eight of nine subjects. Gd-DTPA-enhanced MRI appears to be useful in the evaluation of traumatic facial nerve injuries.
面神经在头部外伤中常易受损。计算机断层扫描（CT）是最常用于评估颞骨骨折的诊断性检查，但它对所有软组织的显示效果不佳。近年来，磁共振成像（MRI）已被用于评估某些软组织，包括颅神经。颞骨外伤的MRI评估经验有限，主要是一些个案报告。本研究评估了MRI在评估实验性诱导的急性颞内面神经损伤中的准确性。对9只兔子的右侧面神经鼓室段进行挫伤，并在术后不同时间间隔分别在未使用和使用钆喷酸葡胺（Gd-DTPA）的情况下进行MRI扫描。使用Gd-DTPA的MRI在9例受试者中的8例中准确识别出了损伤部位。Gd-DTPA增强MRI似乎有助于评估外伤性面神经损伤。
