关键词: 多普勒超声, 肾动脉血流信号曲线, 支持向量机（SVM）, 分类

Abstract: CDS（Color Doppler Sonography） is the first choice to screen RAS（Renal Artery Stenosis）. Currently, to diagnose RAS clinically mainly relies on manual evaluation, which has a great dependency on operators. Blood signal curves of the renal artery and features of classification are extracted from CDS images, and then classifier is created based on SVM to classify blood signal curves of the renal artery with a high accuracy of classification. Besides, the result of SVM classifier is compared with that of maximum likelihood classifier. It has positive effect for diagnosing RAS with computer-aided diagnosis.

Key words: Color Doppler Sonography（CDS）, blood signal curve of renal artery, Support Vector Machine（SVM）, classification