Methods 32 patients with TN and 32 controls were observed by MRI and 3D-TOF-MRA by the enhancement of DTPA.

• 方法常规MRI加3D-TOF-MRA脑干薄层扫描32例TN患者和32名对照，盲法诊断三叉神经根部解剖改变，两组对照分析。