Murphy T P
Brooke Army Medical Center, Atlanta, GA.
Otolaryngol Head Neck Surg. 1991 Jan;104(1):47-51. doi: 10.1177/019459989110400110.
Gadolinium-enhanced MRI was used to evaluate 10 patients with Bell's palsy and one patient with facial paralysis secondary to Lyme disease. Nine of the eleven patients showed increased signal intensity of their facial nerve with gadolinium-enhanced MRI. In all nine patients, the facial nerve was involved at the labyrinthine, geniculate ganglion and proximal tympanic portions of the facial nerve, while two of the nine patients also had involvement of the mastoid segment of the facial nerve. Patients whose facial nerve enhancement was limited to the labyrinthine, geniculate ganglion and proximal tympanic facial nerve ultimately had complete return of facial function. Patients whose facial nerve enhanced in the mastoid segment experienced incomplete return of facial function. Gadolinium is effective in localizing the site of inflammation during facial paralysis. Those patients with enhancement localized to the labyrinthine, geniculate ganglion and proximal tympanic segments were more likely to regain complete facial function. In contrast, patients who had enhancement of the mastoid segment of the facial nerve had poorer prognoses for complete return of facial function.
钆增强磁共振成像（Gadolinium-enhanced MRI）用于评估10例贝尔麻痹患者和1例莱姆病继发的面神经麻痹患者。11例患者中有9例在钆增强MRI上显示面神经信号强度增加。在所有9例患者中，面神经在面神经的迷路段、膝状神经节和鼓室近端部分受累，而9例患者中有2例面神经的乳突段也受累。面神经强化仅限于迷路段、膝状神经节和鼓室近端面神经的患者最终面部功能完全恢复。面神经在乳突段强化的患者面部功能恢复不完全。钆在面神经麻痹期间有效定位炎症部位。强化局限于迷路段、膝状神经节和鼓室近端段的患者更有可能恢复完全的面部功能。相比之下，面神经乳突段强化的患者面部功能完全恢复的预后较差。
