MRTA对面肌痉挛的诊断价值

Diagnostic value of magntic resonance tomographic angiography in hemifacial spasm

目的探讨磁共振体层血管造影(megntic resonance tomographic angiography,MRTA)对面肌痉挛的诊断价值。方法回顾性地分析60例经手术治疗的面肌痉挛患者的MRTA表现及手术结果。结果60例症状侧MR-TA检查有血管压迫者为41侧,接触者为10侧,共51侧,敏感性为85%。60例症状侧行手术治疗,手术发现有血管压迫或接触者48侧,MRTA检查诊断神经血管压迫和接触的特异性分别为95.12%和80%。结论MRTA成像作为一项新的影像学检查技术,能较好地显示面神经脑池段与周围血管之间的关系,从而为面肌痉挛的病因诊断及临床上面神经微血管减压术(MVD)术前评估提供可靠的影像学依据。

Objective：To evaluate diagnostic value of magnetic resonance tomographic angiography（MRTA） in hemifacial spasm.Methods： MRTA manifestations of 60 patients with hemifacial spasm were reviewed retrospectively and operation results were compared.Results： 41 sides had vascular compression and 10 sides had vascular contact in 60 patients with one-side hemifacial spasm by MRTA,with the total of 51 sides,the sensitivity was 85%.48 sides with vascular compression or contact were found by the operation in 60 patients,the specificity of MRTA diagnosis of neurovascular compression and contact was 95.12% and 80%.Conclusin： MRTA as a new imaging technique can demonstrate the relationship between the cisternal portion of facial nerve and surrounding vascular structures,and provides reliable imaging evidence for pathogenetic diagnosis and preoperative examination for MVD.