Candidates for IAT also underwent DSA. At the end of IAT, DSA was repeated with the indwelling catheter to assess the effect of the intervention and the degree of recanalization.

• 行动脉溶栓治疗的患者，于治疗前还进行了数字减影脑血管造影检查。动脉溶栓治疗的最后，留置导管、再次行数字减影脑血管造影检查，评估疗效及血管再通程度。