摘要目的：探讨颈动脉超声常规检查右锁骨下动脉（ SCA）起始部对提高早期颈动脉粥样硬化性病变检出率的临床应用价值。方法回顾性分析2010年11月至2015年6月2896例患者颈动脉超声检查情况，其中2010年11月至2013年1月颈动脉超声检查患者为A组，2013年2月至2015年6月颈动脉超声检查患者（ B组），在原有基础上常规检查右SCA起始部，观察颈动脉粥样硬化性病变检出率。对不同年龄组颈总动脉（ CCA）分叉部与右SCA起始处动脉粥样硬化性病变检出率进行比较。结果 B组颈动脉粥样硬化性病变检出率（74．21％）高A组（57．34％）（χ2＝91．82，P＝0．000）。 B组颈动脉粥样硬化检出率随年龄的增长而增加（右SCA起始部χ2＝181．829，P＝0．000；CCA分叉部χ2＝635．298，P＝0．000），且36～45岁与＞45～55岁组右SCA起始部动脉粥样硬化性病变检出率均高于CCA分叉部（36～45岁组χ2＝8．988，P＝0．003；＞45～55岁组χ2＝19．507，P＝0．000）。结论颈动脉超声应常规检查右SCA起始部，可明显提高动脉粥样硬化病变的检出率。且右SCA起始部是早期发现颈动脉粥样硬化的重要部位，对预防心脑血管疾病有指导性意义。

abstractsObjective To explore the clinical value of scanning the initial segment of right subclavian artery routinely in carotid artery ultrasonography, thus to increase the detectable rate of arteriosclerosis.Methods 2 896 subjects who had undergone carotid artery ultrasonography were analyzed retrospectively from November 2010 to June 2015 in Shuishang Park Hospital,Tianjin.The initial segment of right subclavian artery had been examined rou-tinely in carotid artery ultrasonography from February 2013.The detectable rate of arteriosclerosis at the carotid artery was compared in the two groups.The detectable rate of arteriosclerosis at the bifurcation of common carotid artery and the initial segment of right subclavian artery was analyzed and compared in different age -groups from February 2013 to June 2015 ( group B ) .Results The detectable rate of arteriosclerosis at the carotid artery in group B (74.21%) was significantly higher than 57.34%of group A(χ2 =91.82,P=0.000).The detectable rate of arterio-sclerosis at the carotid artery in group B was increased by age ( the initial segment of right subclavian artery χ2 =181.829,P=0.000;the bifurcation of common carotid arteryχ2 =635.298,P=0.000).The detectable rate of arteri-osclerosis at the initial segment of right subclavian artery was higher than that of the bifurcation of common carotid artery in group of age 36-45 years and >45-55 years (the group of age 36-45 years χ2 =8.988,P=0.003;the group of age >45-55 yearsχ2 =19.507,P=0.000).Conclusion It is necessary that examining the initial seg-ment of right subclavian artery routinely in carotid artery ultrasonography to increase the detectable rate of arterioscle-rosis,and the initial segment of right subclavian artery is the important part to find the arteriosclerosis of carotid artery early,it is of guiding significance to prevent cardiovascular and cerebrovascular disease.