摘要目的:探讨锁骨下动脉盗血综合征(SSS)的超声表现及其诊断价值。方法:抽取2019年1月至2022年1月北京大学第一医院太原医院收治的SSS患者80例，均同期接受彩色多普勒超声(CDFI)及数字减影血管造影(DSA)检查。分析SSS患者CDFI检查的超声表现；以DSA检查结果为金标准，分析CDFI和DSA诊断SSS患者锁骨下动脉狭窄程度的 Kappa一致性；应用Spearman相关性分析CDFI诊断SSS盗血分级与DSA诊断SSS患者锁骨下动脉狭窄程度的关系。 结果:SSS患者CDFI表现为锁骨下动脉近心段狭窄处血管管腔不规则纤细、狭窄和典型斑块回声，患侧频谱形态失常，见狭窄处花色血流信号，血流速度显著增快。经DSA检查确诊SSS轻度狭窄21例，中度狭窄33例，重度狭窄19例，血管闭塞7例。CDFI检查显示轻度狭窄23例，中度狭窄36例，重度狭窄14例，血管闭塞7例。CDFI诊断SSS患者锁骨下动脉狭窄程度的准确度为88.75%， Kappa＝0.84。经CDFI检查SSS盗血分级显示，0级4例，Ⅰ级盗血19例，Ⅱ级盗血49例，Ⅲ级盗血8例。Spearman相关性分析结果显示，CDFI诊断SSS盗血分级与DSA诊断SSS患者锁骨下动脉狭窄程度呈显著正相关( r＝0.57, P<0.05)。 结论:CDFI检查对SSS具有较高的诊断准确性，能精准评估锁骨下动脉狭窄程度及盗血程度，可作为SSS的无创性检查方法。

abstractsObjective:To investigate the ultrasonic manifestations of subclavian steal syndrome (SSS) and their diagnostic value.Methods:A total of 80 patients with SSS admitted to Peking University First Hospital Taiyuan Hospital from January 2019 to January 2022 were enrolled in the study. All underwent color-flow Doppler imaging (CDFI) and digital subtraction angiography (DSA). The ultrasonic manifestations of CDFI in SSS patients were analyzed. Taking DSA resusts as the golden standard, the Kappa consistency of CDFI with DSA in the diagnosis of subclavian artery stenosis in SSS patients was analyzed. The relationship between steal grading by CDFI and subclavian artery stenosis by DSA was analyzed by Spearman correlation analysis. Results:CDFI manifestations in SSS patients showed that there were irregular slender, stenotic and typical plaque echoes in the proximal segment of inferior artery stenosis. The spectrum morphology of the affected side was abnormal, there were color blood flow signals of vertebral artery, with significantly increased blood flow rate. DSA showed that there were 21 cases with mild stenosis, 33 cases with moderate stenosis, 19 cases with severe stenosis, and 7 cases with vascular occlusion. CDFI showed that there were 23 cases with mild stenosis, 36 cases with moderate stenosis, 14 cases with severe stenosis, and 7 cases of vascular occlusion. The accuracy of CDFI in the diagnosis of subclavian artery stenosis was in SSS patients 88.75% ( Kappa=0.84). CDFI showed that there were 4 cases with steal grading at grade 0, 19 cases at grade Ⅰ, 49 cases at grade Ⅱ and 8 cases at grade Ⅲ. Spearman correlation analysis showed that steal grading by CDFI was significantly positively correlated with the severity of subclavian artery stenosis by DSA ( r=0.57, P<0.05). Conclusions:CDFI has a high diagnostic accuracy for SSS, which can accurately assess the severity of subclavian artery stenosis and steal grading, and can be used as a non-invasive examination method for SSS.