Distinguish the result of MSCTA and DSA into classes separately acorrding to FICA standard and compare the MSCTA with DSA. .

• 30例同时行DSA和MSCTA的ASO病例,按国际关节血管学会标准分别对诊断结果进行统计学分级并分型,秩和检验比较MSCTA诊断同“金标准”之间的接近程度。