速度向量成像联合动脉健康评估软件评价健康成人颈动脉弹性及弹性储备  

Assessment of elasticity and reserve of elasticity of carotid artery in normal adults with velocity vector imaging and arterial health package

作　　者：刘秋颖[1] 贺声[1] 张云山[1] 余泽辉[1] 

机构地区：[1]中国人民解放军海军总医院超声诊断科,北京100048

出　　处：《中国医学影像技术》2012年第12期2159-2162,共4页Chinese Journal of Medical Imaging Technology

摘　　要：目的采用速度向量成像(VVI)技术联合动脉健康评估软件包(AHP)分析健康成人颈动脉弹性及弹性储备。方法对54名健康成人进行血压测量和右颈动脉超声检查,以VVI测量收缩期最大运动速度(Vmax)、最大应变(Smax)、最大应变率(SRmax),AHP测量平均直径(d)、扩张性系数(D)、弹性系数(E)。含服硝酸甘油(NTG)后5、10、15min重复上述检查。计算Smax、D、E的储备值:储备值=(峰值-基础值)/基础值。结果含服NTG后收缩压(Ps)、舒张压(Pd)、脉压(PP)较用药前均有下降,Pd、PP于15min恢复至基础水平;用药后各节段Smax均增高,各节段间差异均无统计学意义,Smax在5min达到峰值,10min降至基础;各时间点Vmax、SRmax与用药前相比差异无统计学意义;Smax储备值为22.29%;用药后d、D、E增高,d于15min恢复基础水平,D于10min恢复,E至15min时仍高于基础状态,D储备值为31.73%,E储备值为74.51%。结论 VVI结合AHP可用于评价动脉弹性和弹性储备,有助于临床早期发现血管损害。Objective To evaluate elasticity and reserve of elasticity of carotid artery in normal adults using velocity vec- tor imaging （VVI） and artery health package （AHP）. Methods Blood pressure was obtained for 54 normal adults, and then carotid ultrasonography was performed. VVI was used to measure systolic maximal velocity （V_max）, maximal strain （S_max） and maximal strain rate （SR_max）. AHP was used to measure the mean diameter （d）, distensibility （D） and elasticity （E） of carotid artery. After sublingual intaking nitroghycerin （NTG）, every subject underwent all examinations at 5, 10 and 15 min. Reserve of S D and E were calculated. Reserve value= （maximal value--baseline value）/baseline value. Results Systolic pressure （Ps）, diastolic pressure （Pd） and pulse pressure （PP） decreased after intaking NTG. Pd and PP recovered to baseline after 15 min. S_max of every segment increased after intaking NTG, but no difference was found be- tween each two segments. S_max got to peak value 5 min after intaking NTG, and recovered after 10 rain. V_max and SR_max didn＇t changed after NTG. The reserve value of S_max was 22.29%. D, E and d increased after intaking NTG, d returned to basal levels after 15 rain, D returned after 10 min, while E was still higher than the base state after 15 min. Reserve value of D was 31.73% and reserve value of E was 74.51%. Conclusion VVI and AHP can be used to assess elasticity and re- serve of elasticity, therefore being helpful to early detection of vascular lesions.

关 键 词：速度向量成像 动脉健康评估 弹性 硝酸甘油 储备 

分 类 号：R445.1[医药卫生—影像医学与核医学] R3[医药卫生—诊断学]