步进式DSA技术在下肢顺行性静脉造影中的应用

Application of stepping DSA technique in lower limb venography anterograde

目的评价步进式DSA技术在下肢顺行性静脉造影中的应用价值。方法将要求行下肢静脉造影患者40例随机分为2组:研究组20例行步进式DSA造影,对照组20例行传统分段式DSA造影。由介入科主治以上医生及技师共同将图像满意率、造影耗时、吸收辐射剂量(DAP)、造影剂用量等进行比较评价。结果步进式DSA造影与传统分段式DSA造影相比较,2种方法造影图像质量相仿,但步进式DSA造影对观察由下而上血流的连续性,血流动态流向,判断静脉的解剖形态及病理血管血流状况,图像更加富有整体性,一次性成功率85%(17/20)。其次吸收辐射剂量,造影剂用量,总体检查时间均明显减少。结论对下肢静脉病变,步进式DSA造影较传统分段式DSA造影环节更为简化,图像整体观及实用性强,对下肢静脉病变介入治疗方案的决策以及外科手术有很重要的客观指引作用。

Objective To investigate the value of the application of step-DSA in lower extremity venography anterograde.Methods Forty patients of lower limb venography were randomly divided into two groups： the research group of 20 cases using step-DSA and the compared group of 20 using the traditional sub-type DSA.Then the attending doctors and technicians in Invasive Technology Department had a comparison and assessment in the aspects of the image satisfaction rate,DSA time-consuming,dose area product（DAP）,dosage of contrast agent and so on.Results The DSA image quality of the two methods was similar,but compared with the traditional sub-type DSA,the stepping DSA has a better image and success rate of 85%（17/20） at the first treatment through observing the continuity of bottom-up bloodstream,dynamic flow of blood and determining the venous anatomical form and pathological blood flow conditions.Furthermore,with stepping DSA,the absorbed radiation dose,dosage of contrast agent and the total inspection time have decreased obviously.Conclusion In terms of the lower extremity venous disorder,stepping DSA has a more simplified process,more integrated image and stronger practicability,which will have an important and objective instructive effect on the decision and surgery toward the interventional therapy of the disease.