超声常规检查与超声造影诊断肾动脉狭窄对比分析

Comparative analysis of conventional ultrasonography and contrast-enhanced ultrasound in diagnosis of renal artery stenosis

目的 比较超声造影与超声常规检查诊断不同程度肾动脉狭窄的准确度. 方法 50例拟诊为肾动脉狭窄患者分别采用常规超声检查和超声造影检查方法,分别测量肾动脉直径狭窄程度,并与数字减影血管造影（DSA）检查相对照,判定两种检查方法的诊断符合率. 结果 50例患者经DSA检查,发现肾动脉直径狭窄率30%～49%21例、50%～75%23例,＞75%6例.超声常规检查发现30%～49%15例、50%～75%18例,＞75%5例,诊断准确率为78%（38/50）,超声造影检查发现30%～49%20例、50%～75%20例,＞75%6例,诊断准确率为92%（46/50）,两种检查方法诊断准确率差异有统计学意义（χ^2=4.761,P＜0.05）. 结论 超声造影对肾动脉狭窄的程度的判定准确率较高,是理想的检查方法.

Objective To compare contrast-enhanced ultrasound and conventional ultrasound in determining artery stenosis of varying degrees of accuracy. Methods Using conventional ultrasound and contrast-enhanced ultrasound renal artery stenosis was diagnosed.And the renal artery diameter stenosis were measured the extent to which digital subtraction angiography （DSA） as the standard diagnostic accuracy of two methods to determine the rate. Results 50 patients were diagnosed as renal artery stenosis with DSA,21 patients stenosis rate 30%-49%,23 patients stenosis rate 50%-75%,6 patients stenosis rate 〉75%.diagnose accordance rate 78%（38/50）with conventional color doppler and 92% （46/50） with contrast-enchanced ultrasound.The difference was statistically significant （P〈0.05=. Conclusion Using ultrasound imaging of the renal artery stenosis to determine the degree had higher accuracy than the conventional ultrasonic testing method,was suitable for clinical application.