Objective To study the clinical significance of routine MRI and 3 dimensional time of flight magnetic resonance angiography (3D-TOF-MRA) for the pathogenesis of Trigeminal neuralgia (TN).

• 目的研究MRI加三维体积扫描飞时法磁共振血管成像(3D-TOF-MRA)对三叉神经痛（TN）病因诊断的临床价值。