下肢动脉阻塞性病变的DSA成像探讨

Study on DSA Imaging in Arterial Obstructive Diseases of Lower limbs

目的 :探讨下肢动脉阻塞性病变的DSA成像特性。材料与方法 :对 6 7例中的 5 6例下肢动脉阻塞性病变的DSA成像进行分析 ,采用常规造影剂量与加大造影剂量比较 ,髂外动脉与股动脉造影比较及曝光延时的比较。结果 :正常 11例 ,病变 5 6例 ,双侧病变 10例。加大造影剂量、股动脉处注药及特殊曝光延时 ,均增加了DSA的成像质量和诊断信息。结论 :对下肢动脉阻塞性病变 ,增加造影剂用量、近病变处注射造影剂 ,使用准确的延迟时间 ,可提高阻塞病变远端血管和侧支循环的显示率。

Purpose:To study the characteristic of DSA imaging in arterial obstructive diseases of lower limbs.Materials and Methods:Analysis of 56 cases DSA imaging in arterial obstructive diseases of lower limbs were performed,the DSA imagings of different contrast dose(normal and high dose),different injective location(intrailiac or intrafemoral artery),and different exposing delay time were compared.Results:11 cases were normal,56 cases illness and 11 of them bilateral lesions.the DSA imagings quality and diagnostic information could be improved by increasing dose and injective speed of contrast at femoral arteries,and by using special exposing delay time.Conclusion:To improve demonstrative rate of distance and lateral circulation of obstructive illness of lower limbs,it is useful to increase contrast dose,inject near lesions.and use accurate exposing delay time.