正常人颈总动脉、肱动脉、胫后动脉牛顿射血力分析  

Analysis of Newton's ejection force of carotid artery,brachial artery and posterior tibial artery in healthy subjects

作　　者：肖沪生[1] 银浩强[1] 徐智章[2] 张爱宏[3] 徐芳[1] 任亚娟[1] 彭欣[1] 靳炜[1] 王奇[1] 

机构地区：[1]上海中医药大学附属龙华医院超声科,200032 [2]复旦大学超声医学与工程研究所 [3]西安交通大学医学院附属二院医用超声研究室

出　　处：《上海医学影像》2011年第4期258-260,共3页Shanghai Medical Imaging

摘　　要：目的运用多普勒超声技术检测正常人颈总动脉、肱动脉、胫后动脉的牛顿射血力,探讨正常人体多处外周动脉牛顿射血力变化的意义。方法纳入30例正常人,将多普勒超声探头分别置于受试者左侧颈总动脉起始段、左侧肱动脉、左侧胫后动脉,测量以上动脉的血管内径、血流加速度及加速期流速积分,根据牛顿第二定律F=ma计算出牛顿射血力。结果 30例正常人左侧颈总动脉的血管内径为(0.59±0.05)cm,血管截面积为(0.28±0.05)cm2,血流加速度为(1 681.53±1 590.88)cm/s2,加速期流速积分为(4.31±1.01)cm,牛顿射血力为(1 941.73±958.68)dynes。左侧肱动脉的血管内径为(0.32±0.04)cm,血管截面积为(0.08±0.02)cm2,血流加速度为(1 018.40±287.28)cm/s2,加速期流速积分为(3.21±1.17)cm,牛顿射血力为(319.57±228.93)dynes。左侧胫后动脉的血管内径为(0.21±0.03)mm,血管截面积为(0.03±0.01)cm2,血流加速度为(658.13±173.94)cm/s2,加速期流速积分为(2.28±1.15)cm,牛顿射血力为(68.11±69.34)dynes。结论通过检测人体多处外周动脉牛顿射血力可以分析从心脏到外周血管轴向力的分布,分析人体动脉长度、血管内径、血管弹性变化及动能势能转换对牛顿射血力传导的影响,为该参数的临床应用提供科学依据。Objective To explore the siglfificance of changes of Newton＇ s ejection force in multiple peripheral arteries by detecting Newton＇ s ejection force of carotid artery, brachial artery and posterior tibial artery of healthy subjects with Doppler ultrasonography. Methods Thirty cases of healthy subjects were enrolled. The Doppler ultrasonic probe was respectively placed on the initial segment of left carotid artery, the left brachial artery and the left posterior fibial artery of the subjects. The systole vessel diameters, the area of the artery, the flow accelerations, and the time velocity integrals of acceleration were detected and Newton＇ s ejection force was calculated according to Newton＇ s second law of motion （force=mass × acceleration）. Results The diameter of left carotid artery of 30 healthy subjects was （0.59± 0.05） cm, the area of the left carotid artery was （0.28 ± 0.05） cm^2, tile flow acceleration was （1681.53 ± 1590.88） cm/s2, the time velocity integr^s of acceleration was （4.31± 1.01） cm, Newton＇ s ejection force was （1941.73 ± 958.68） dynes. The diameter of left brachial artery of 30 healthy subjects was （0.32 ± 0.04） cm, the area of the left brachial artery was （0.08 ± 0.02） cm^2, the flow acceleration was （1018.40 ± 287.28） cm/s^2, the time velocity integrals of acceleration was （3.21 ±1.17） cm, Newton＇s ejection force was （319.57 ± 228.93） dynes. The diameter of left posterior tibial artery of 30 healthy subjects was （0.21 ± 0.03） cm, the area of the left posterior tibial was（0.03 ＋ 0.01） cm2, the flow acceleration was （658.13 ± 173.94） cm/s^2, the time velocity integrals of acceleration was （2.28 ± 1.15） cm, Newton＇s ejection force was （68.11 ± 69.34） dynes. Conclusions The axial force distribution from heart to peripheral arteries, the artery length, vessel diameter, artery elasticity and the influence to Newton＇s ejection force due to the transfomaation between kinetic energy and potential energy

关 键 词：多普勒超声 牛顿射血力 血流动力学 动脉 

分 类 号：R443.5[医药卫生—诊断学]