Methods All 120 patients received Allen test before operation. The catheter was inserted into the right radial artery for angiography. We used 5F Terumo Optiporqe Radil angiography catheter according to operator.

• 方法120例病人术前均接受A llen's试验检查,选择右侧桡动脉作为穿刺插管的部位,依个人习惯我们使用5F桡动脉造影导管。