Department of Radiology, Ankara Numune Education and Research Hospital, Ankara, Turkey.
Can Assoc Radiol J. 2010 Oct;61(4):201-5. doi: 10.1016/j.carj.2009.10.004. Epub 2009 Dec 10.
The individual visualization of the glossopharyngeal, vagus, and accessory nerves has been a troublesome issue. After the recent developments in the microsurgical field, the detailed knowledge of the relationship of these nerves and the tumour has gained importance. The purpose of this study is to compare the visibility of each of these nerves.
Thirty patients (M/F: 14/16; mean age 52.46 years) with complaints of vertigo, tinnitus, and hearing loss were examined with routine temporal magnetic resonance imaging (MRI) study. The imaging protocol consisted of 3-dimensional fast imaging with steady state acquisition in axial and sagittal oblique planes in addition to routine sequences. These images were transferred to a workstation and reformatted. Visibility of the nerves was evaluated by consensus of 2 radiologists who used an evaluation scale of 2 (excellently visible), 1 (partially visible), to 0 (not visible).
In 26 patients, both sides were scanned; in 4 patients, only one side was scanned. A total of 168 nerves were investigated. The rates for visualization for each nerve were as follows: glossopharyngeal nerve, 100% and 100%; vagus nerve, 67.9% and 100%; and accessory nerve, 10.8% and 83.85% on axial and sagittal oblique 3-dimensional fast imaging with steady state acquisition, respectively.
Glossopharyngeal, vagus, and accessory nerve assessment improved when images were obtained in the sagittal oblique plane to the jugular foramen.
舌咽神经、迷走神经和副神经的个体可视化一直是一个棘手的问题。在显微外科领域的最新发展之后，这些神经与肿瘤的关系的详细知识变得重要起来。本研究的目的是比较这些神经的可见度。
30 名（男/女：14/16；平均年龄 52.46 岁）有眩晕、耳鸣和听力损失症状的患者接受了常规颞骨磁共振成像（MRI）检查。成像方案包括在轴位和矢状斜位上使用三维快速稳态采集的成像，以及常规序列。这些图像被传输到工作站并进行重新格式化。两位放射科医生通过使用 2 分制（极好可见）、1 分制（部分可见）至 0 分制（不可见）的评估量表对神经的可见性进行了评估。
在 26 名患者中，两侧均进行了扫描；在 4 名患者中，仅对一侧进行了扫描。共检查了 168 条神经。每条神经的可视化率如下：舌咽神经，100%和 100%；迷走神经，67.9%和 100%；副神经，轴位和矢状斜位三维快速稳态采集的分别为 10.8%和 83.85%。
当在颈静脉孔的矢状斜位获取图像时，舌咽神经、迷走神经和副神经的评估得到了改善。
