Castillo M, Mukherji S K
Department of Radiology, University of North Carolina School of Medicine, Chapel Hill 25799-7510, USA.
Top Magn Reson Imaging. 1996 Jun;8(3):180-6.
Cranial nerves IX (glossopharyngeal), X (vagus), and XI (spinal accessory) are intimately related. Therefore, for imaging purposes they are best considered as a unit rather than as individual structures. The XIth nerves are not considered true cranial nerves because they are formed by cephalic (bulbar) and caudal (spinal) divisions. The XIIth (hypoglossal) nerves arise inferiorly to the above mentioned cranial nerves and exit the skull via a different set of foramina. Because the course of these four pairs of cranial nerves extends from the base of the skull to the upper thorax, a combination of both magnetic resonance imaging (MRI) and computed tomography is needed for optimal evaluation. This article will emphasize the use of MRI when appropriate.
第九对（舌咽神经）、第十对（迷走神经）和第十一对（副神经）颅神经密切相关。因此，出于成像目的，最好将它们视为一个整体，而非单个结构。第十一对神经不被视为真正的颅神经，因为它们由头部（延髓）和尾部（脊髓）部分组成。第十二对（舌下神经）神经起源于上述颅神经下方，并通过另一组孔道离开颅骨。由于这四对颅神经的走行从颅底延伸至胸廓上部，因此需要结合磁共振成像（MRI）和计算机断层扫描才能进行最佳评估。本文将在适当的时候重点介绍MRI的应用。
