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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。
Objective: To investigate DSA imaging characteristics of obstructive arterial disease of the lower extremities. Materials and Methods: DSA imaging of 56 patients with lower extremity arterial occlusive disease was analyzed in 67 cases. Comparisons of conventional external iliac artery and femoral artery angiography and comparison of exposure delay were performed by comparing the conventional contrast agent with increasing contrast agent. Results: Normal in 11 cases, pathological changes in 56 cases, bilateral lesions in 10 cases. Increasing the contrast dose, injection of femoral artery and special exposure delay, have increased the DSA imaging quality and diagnostic information. Conclusion: For obstructive arterial occlusive disease of the lower extremities, the contrast agent dosage is increased, the contrast agent is injected near the lesion, and the accurate delay time can be used to improve the display rate of distal vessels and collateral circulation.