Mafee M F, Kumar A, Valvassori G E, Dobben G D, Meyer D
Laryngoscope. 1985 May;95(5):505-14. doi: 10.1288/00005537-198505000-00001.
The reliability of a neurotological evaluation in differentiating labyrinthine (end organ) lesions from retrolabyrinthine lesions has been well established. The purpose of this communication is to determine the diagnostic potential of computed tomography (CT) in patients suspected of having retrolabyrinthine lesions on the basis of their neurotological evaluations. Our study indicates that the validity of central vestibular and audiometric signs can be best substantiated with CT. The anatomy of neurovascular bundles within the internal auditory canal and cerebellopontine cistern can be readily visualized and identified by CT pneumocisternomeatography. By obtaining appropriate thin CT sections not only can very small lesions be identified but their anatomic locations can also be accurately established. CT pneumocisternomeatography is the method of choice to diagnose an intracanalicular acoustic neuroma. An unusually large vascular loop of the internal auditory canal may be responsible for sensorineural hearing loss and tinnitus in some patients.
神经耳科学评估在区分迷路（终器）病变和迷路后病变方面的可靠性已得到充分证实。本通讯的目的是根据神经耳科学评估，确定计算机断层扫描（CT）对疑似迷路后病变患者的诊断潜力。我们的研究表明，CT能最好地证实中枢前庭和听力体征的有效性。通过CT气脑池造影术，可以很容易地观察和识别内耳道和桥小脑池内神经血管束的解剖结构。通过获取合适的CT薄层扫描，不仅可以识别非常小的病变，还能准确确定其解剖位置。CT气脑池造影术是诊断管内型听神经瘤的首选方法。内耳道异常大的血管袢可能是一些患者感音神经性听力损失和耳鸣的原因。
