摘要
目的 :探讨下肢动脉阻塞性病变的DSA成像特性。方法 :对 67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。
Objective:To study the technical parameters of DSA in arterial obstructive diseases of lower limbs.Methods:56 cases of DSA imaging in arterial obstructive diseases of lower limbs were analyzed.A comparative study on imaging quality using different technical parameters was made:conventional dosage of contrast medium vs. larger dosage,injection via external iliac artery vs. femoral artery,and comparison of different delay times of exposure.Results:DSA demonstrated normal artery of 11 cases,arterial lesions of 56 cases,and bilateral arterial lesions of 11 cases.By increasing dosage and injection speed of contrast agent in femoral artery,and using adequate delay time,the imaging quality was improved and more diagnostic information was provided.Conclusions:The demonstration of distal vessels and collateral circulation in lower limbs with arterial obstructive diseases can be improved by increasing dosage of contrast agent,placing the catheter nearer to the lesion,and using accurate delay time of exposure.
出处
《放射学实践》
2000年第4期265-267,共3页
Radiologic Practice
关键词
下肢动脉阻塞性病变
DSA成像
Lower limb Arterial obstructive diseases DSA imaging
