超声速度向量成像技术评估缺血性脑卒中患者颈动脉弹性的价值OACSTPCD

Objective To investigate the value of ultrasound velocity vector imaging(VVI)on evaluating carotid artery elasticity in patients with ischemic stroke.Methods Totally 92 patients with ischemic stroke in the 964th Hospital of the Joint Logistic Support Force from May 2020 to January 2023 were included in observation group,and 50 healthy subjects with physical examination during the same period were selected as control group.General clinical data,conventional ultrasound parameters(carotid intima-media thickness(IMT),carotid artery diameter(CAD),carotid artery velocity(CAV),carotid artery flow(CAF)),VVI parameters(carotid longitudinal strain(LS),longitudinal strain rate(LSR),radial strain(RS),radial strain rate(RSR))were compared between the two groups.Pearson correlation coefficient analysis was used to analyze the correlation between VVI parameters and blood pressure indicators,blood lipids and conventional ultrasound parameters in observation group.Results Systolic blood pressure,diastolic blood pressure,total cholesterol,low density lipoprotein(LDL)and triglyceride in observation group were higher than those in control group(P＜0.05),while high density lipoprotein(HDL)was lower than that in control group(P＜0.05).The IMT and CAD in observation group were(1.23±0.25)mm and(6.53±0.72)mm,respectively,both greater than(0.79±0.15)mm and(6.01±0.65)mm in the control group(P＜0.05),while the CAV was(29.72±4.85)cm/s,which was less than(33.46±5.28)cm/s in the control group(P＜0.05).The absolute values of carotid LS,LSR,RS and RSR in observation group were(18.23±2.35)%,(1.32±0.21)s-1,(23.45±4.12)%,and(1.87±0.34)s-1,respectively,all less than(22.76±2.84)%,(1.57±0.26)s-1,(28.78±4.63)%,and(2.23±0.38)s-1 in the control group(P＜0.05).Pearson correlation analysis showed that the absolute values of LS,LSR,RS and RSR in observation group were negatively correlated with systolic blood pressure,total cholesterol,triglyceride,IMT and CAD(P＜0.05),and were positively correlated with CAV(P＜0.05).Conclusion VVI can quantitatively evaluate the carotid artery elasticity in patients with ischemic stroke,and these quantitative parameters have a certain correlation with blood lipids,blood pressure indicators and conventional carotid ultrasound parameters.