彩色多普勒超声联合CT动脉造影诊断下肢动脉硬化闭塞症

Color doppler ultrasound combining with computed tomographic angiography in assessing arteriosclerosis occlusion

目的 评价彩色多普勒超声及CT动脉造影共同诊断下肢动脉硬化闭塞症的有效性。方法回顾性研究43例下肢动脉硬化闭塞症患者，均分别应用彩色多普勒超声、CT动脉造影及数字减影动脉造影进行诊断。以数字减影动脉造影结果为金标准，将前2种检查结果与之进行对比分析。结果彩色多普勒超声诊断下肢动脉硬化闭塞症敏感性、特异性、阳性预测值、阴性预测值分别为82．96％、95．2％、94．92％、83．8％；CT动脉造影诊断下肢动脉硬化闭塞症敏感性、特异性、阳性预测值、阴性预测值分别为88．89％、96．75％、96．77％、88．81％，两者联合诊断下肢动脉硬化闭塞症敏感性、特异性、阳性预测值、阴性预测值分别为94．81％、99．17％、99．22％、94．44％。结论彩色多普勒超声联合CT动脉造影检查是诊断下肢动脉硬化闭塞症的有效方法。

Objective To evaluate the effectiveness of color doppler ultrasound （CDU） in combination of computed tomographic angiography（CTA） in diagnosis of the arteriosclerosis occlusion . Methods ： 43 patients with arteriosclerosis occlusion were assessed by color doppler ultrasound , CTA and digital subtraction angiography （DSA）. By using DSA as the reference standard,the results were compared. Results The sensitivity, specificity, positive and negative predictive values for CDU were 82.96% ,95.2% , 94.92% , 83.8% respectively. Those for CTA were 88.89% ,96.75% ,96.77% ,88.81% respectively, and for the two combination ,were 94.81% ,99.17% , 99.22% ,94.44% respectively. Conclusion The color doppler ultrasound combined with CTA is an effective way in diagnosing arteriosclerosis occlusion.