磁共振对因神经血管压迫致三叉神经痛的诊断价值

目的 分析原发性三叉神经痛患者的MR表现,探讨MRI对因神经血管压迫致原发性三叉神经痛的诊断价值。方法回顾性分析12例三叉神经痛患者的MRI表现,就三叉神经和周围血管的关系与手术结果进行对照分析。结果 12例三叉神经痛患者的MRI资料中,神经血管压迫、接触或可疑接触者11例,占91.7％;该12例患者均行手术,证实血管压迫或接触者12例;故与手术结果对照,MRI诊断三叉神经痛神经血管压迫或接触的敏感性为91.7％。结论 MRI能清晰显示三叉神经脑池段与毗邻血管之间的关系,对三叉神经血管压迫或接触的诊断具有较高的敏感性,对提供术前评估和指导治疗有极其重要的意义。

Diagnosis value of MR on neurovascular compression with original trigeminal neuralgia

Objective To analyze MR findings, and to detect the diagnostic value of neurovascular compression in patienst with original trigeminal neuralgia.Methods To analyze retrospectively the MR manifestation of 12 patients with trigeminal neuralgia;To analyze correlatively MR findings and operative results in trigeminal neuralgia associated to the relationship between trigeminus and surrounding vessels. Results In these 12 patients, there were 11 patients showed neurovascular compression, contact or uncertain contact, the percent is 91.7 % . These 12 patients were all operated, and all cases were verified as vascular compression or contact by the operation. The sensitivity of MR diagnosis with trigeminal neuralgia associated to neurovascular compression or contact are 91.7% . Conclusion MR could demonstrate clearly the relationship of the cisternal portion of the fifth cranial nerve to surrounding vascular structures, and had higher specificity and sensitivity in diagnosing neurovascular compression or contact, it played an important role in preoperated evaluation and cure.