目的 对比研究糖尿病与非糖尿 病下肢血管病变多层螺旋CT影像特征。方 法 选取我院2015年1月-2016年1月收治的 糖尿病和非糖尿病下肢血管病变患者各60 例，设定糖尿病下肢血管病变患者A组， 非糖尿病下肢血管病变患者B组，实施128 层炫速双源CT检测。 结果 两组患者的下 肢血管病变的部位存在差异性，组间比较 具有统计学意义(P＜0.05)；两组患者的 下肢血管病变狭窄程度，组间差异明显， 具有统计学意义(P＜0.05)；B组患者的斑 块特征主要表现为非钙化斑块，A组患者 斑块特征主要表现为钙化斑块。结论 由 糖尿病引发的下肢血管病变多层螺旋CT特 征为：病变部位在膝关节水平以下动脉， 血管狭窄等级中度相对较多，斑块特征为 钙化斑块，多层螺旋CT具有临床诊断价值 和意义。

Objective To compare the MDCT manifestations of lower extremity vascular lesions between diabetic and non-diabetic patients. Methods A total of 60 cases of diabetic and non-diabetic patients with lower extremity vascular lesions from January 2015 to January 2016 were selected, set the diabetic patients with lower extremity vascular lesions as group A and group B patients without diabetic. All patients underwent dual source CT detection. Results There were statistical significance differences in the location of lower extremity vascular lesions between the two groups(P<0.05), the difference of lower extremity vascular stenosis degree between the two groups were statistically significant (P<0.05), the plaque characteristics of B group were mainly non calcified plaques, while the plaque characteristics of A group were mainly calcified plaques. Conclusion The MDCT manifestations of lower extremity vascular lesions caused by diabetes were: the location of the lesion was below the level of the knee joint, and the degree of vascular stenosis was moderate, and the plaques were characterized by calcified plaques. Multi slice spiral CT has clinical value in the differential diagnosis of lower extremities vascular lesions in diabetic and non-diabetic patients.