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在人体十二对脑神经中,面神经是骨内行程最长的神经,也是最常发生麻痹的神经;位听神经则是发生肿瘤最多的脑神经。这两对神经在颅内有一段共同的行程,发生病变时可相互影响。以往,应用平片、多轨迹断层、CT(平扫、增强、气体或阳性造影剂脑池造影)、HRCT或血管造影评价面神经和位听神经曾取得不同程度的成功。但面神经和位听神经的行程大部位于骨内,上述方法的应用受到限制,且有一定的创伤性。由于MRI具有非侵袭性、多平面直接成像、极好的软组织分辨率及无射线硬化伪影等特点,对于面神经和位听神经的显现已逐渐替代了上述方法。本文对面神经和位听神经的断层解剖及MRI的研究进展综述如下。
In the body of twelve pairs of cranial nerves, the facial nerve is the longest nerve within the longest stroke, but also the most common nerve paralysis occurs; bit of the auditory nerve is the most tumor-bearing brain. The two pairs of nerves have a common stroke in the skull and can affect each other when lesions occur. In the past, plain or multi-trace CT, plain (CT), enhanced, gas or positive contrast-agent brain poolography, HRCT, or angiography have been used to evaluate the success of facial and auditory nerve to varying degrees. However, the facial nerve and bit auditory nerve most of the journey in the bone, the application of the above methods are limited, and some trauma. Because of its non-invasive, multi-planar direct imaging, excellent soft tissue resolution and non-radiographic artifact, MRI has emerged as a surrogate for facial and auditory nerve imaging. This article on the facial nerve and bit auditory nerve tomography and MRI research advances are summarized below.