Objective To evaluate the magnetic resonance tomographic angiography (MRTA) in diagnosis ofhemifacial spasm and compare the efficacy of multiplane and axial source MRTA.

• 目的探讨和评估磁共振断层血管造影(MRTA)在面肌抽搐病人中的诊断价值，并比较多平面和单一横断位MRTA的作用。