Analysis of Application of Doppler Ultrasound Joint Indicators in Diagnosis of Renal Artery Stenosis

CHEN Ji-qiang

doi:10.3969/j.issn.1004-5775.2015.07.014

Abstract：Objective To analyze the application value of Doppler ultrasound joint indicators in the diagnosis of renal artery stenosis ( RAS) , which will provide reliable reference for future clinical diagnosis work.Methods 187 cases of clinical diagnosed renal artery ste-nosis patients treated in the hospital from January, 2008 to December, 2014 were chosen, and Doppler ultrasound examination was applied.Related ultrasound indicators of renal artery diagnosis were measured, and statistical analysis was taken to the diagnosis results.Results Through statistic data analysis, it is found that among 337 renal arteries found by CT angiography and Doppler ultrasound examination, there were 148 renal artery stenosis and 15 occlusion diagnosed by CTA.After applied renal artery systolic velocity ( PSV) >170 cm/s and renal early systolic interlobar artery acceleration time ( AT)≥0.07 as joint indicators, the diagnosis results were obviously improved.On the other hand, the diagnostic specificity was decreased to a certain extent after the combination of renal artery systolic velocity ( PSV) >170 cm/s, ratio of systolic velocity in renal artery to that in interlobar artery >5.1 and renal early systolic interlobar artery acceleration time ( AT)≥0.07 as joint indicators.Conclusion In the diagnosis of renal artery stenosis for renal artery diameter reduction≥60%, renal ar-tery systolic velocity and the ratio of systolic velocity in renal artery to that in interlobar artery are ideal single Doppler indicators.The com-bination of renal artery systolic velocity and renal early systolic interlobar artery acceleration time can get the best diagnostic performance.It has significant clinical value and is worthy of attention.