峰值速度

结果对照组的组织多普勒曲线舒张期表现为有规律的负向波e、a，并且负向波的峰值速度Ve>Va。

Results Tissue velocity imaging of normal subjects contained regular negative waves e and a.

结果做理视健眼操后眼动脉的收缩期峰值速度比操前明显增快（P＜0.001）。

Results The peak systolic velocity was speeded up and the resistive index decreased significantly after ocular gymnastics ( both P < 0.001 ) .

用血流多普勒法测定二尖瓣口血流峰值速度（E、A）及比率（EA），并进行比较。

Peak flow velocity ( E , A ) and ratio ( E / A ) of mitral valve orifice were measured by Doppler and compared .

主要表现为多普勒二尖瓣口舒张早期峰值速度（E）降低、舒张晚期峰值速度（A）增加，A/E比值增大；

The Doppler mitral inflow velocities showed that the height of the early diastolic flow-velocity peak ( E ) was reduced and the height of the late diastolic peak ( A ) was increased .

在假定Q因子线性地依赖于频率的指数衰减项的情况下，使用该模型导出了直接与地面运动峰值速度参数估算地震应力降的测定关系。

Assuming that Q factor changes in a linear way with frequency , the relation which is able to estimate the stress drop through peak velocity of ground can be derived as .

大规模并行处理机（massivelyparallelprocessor，MPP）一般都具有极高的理论峰值速度，但用户在实际应用中的有效速度却往往与之大相径庭。

Generally , the Massively Parallel Processor ( MPP ) has very high peak speed in theory , but the user 's effective speed in use is far from it .

而且，4G网络系统可以提供超宽带互联网接入服务。2008年，4G服务的峰值速度要求被设置为100兆位/秒。

And , it provides ultra-broadband Internet access . In 2008 , peak speed requirements for 4G service was set at 100 megabits per second .

观察各组小鼠肿瘤的生长情况，超声检测肿瘤血管的收缩期峰值速度（PS）及阻力指数（RI），原位杂交法及RT-PCR法对肿瘤内vEGFmRNA表达水平进行检测。

Peak systolic flow velocity ( PS ) and resistance index ( RI ) were measured with a sonographic scanner . Expression of VEGF mRNA were detected by hybridization in situ and RT-PCR .

测量CFV血流频谱参数：逆向的心房收缩波峰值速度（Va）和持续时间（Ta）。

The Doppler parameters of CFV : the retrograde a wave-velocity peak ( Va ) and duration time ( Ta ) were obtained .

LADA组收缩期和舒张期心肌峰值速度、应变率及收缩期、舒张早期心肌应变明显低于对照组（P＜0.01）。

Myocardial velocity and strain in systolic and diastolic period , myocardial strain in systolic and early diastolic period in LADA group were significantly lower in comparison with control group ( P 0.01 ) .

目的探讨检测脐动脉血流收缩期峰值速度与舒张末期最低流速比值（S/D）和搏动指数（PI）对双胎围产儿预后的预测价值。

Objective To discuss the value of minimum systolic and diastolic peak velocity ratio ( S / D ) and pulse index ( PI ) of the umbilical artery of pregnant twins in predicting perinatal outcome .

结果：冠脉痉挛梗塞组心尖部及前壁中段、心尖段的收缩波、舒张早期波峰值速度及时间速度积分明显低于对照组（P0.01）。

Results : In patients with myocardial infarction , systolic early diastolic peak velocity and time velocity integrals of middle , apical segments and apex were significantly lower than those in normal subjects ( P 0.01 ) .

结论：（1）主动脉僵硬度系数与冠心病之间呈显著的正相关，PW-DTI测值一主动脉前壁S波峰值速度与冠心病的发生之间呈显著的负相关；

Decreased aortic upper wall S wave velocity measured by PW-DTI had negative correlation with increased aortic stiffness index significantly ;

结果：ASD封堵治疗术后三尖瓣口E峰、A峰峰值速度及肺动脉瓣口血流速度、积分和压力阶差显著降低。

Peak and mean blood velocity and velocity-time integral ( VTI ) of pulmonary valve orifice were measured in parasternal aortic root short axis view . Results : After occlusion , the E velocity and A velocity at tricuspid valve orifice decreased .

麻醉诱导后，A组心脏指数（CI）、每搏输出量（SV）开始下降，差异有统计学意义（P0.05或0.01），心率（HR）、主动脉血流峰值速度（Vpk）变化不明显；

The cardiac index ( CI ) and the stroke volume ( SV ) began to decrease after induction ( P0.05 or 0.01 ) while there was no significant difference for HR and Vpk in group A.

结果：二尖瓣频谱E波的峰值速度与A波的峰值的比值，等容松弛时间，室间隔与主动脉根部的夹角，主动脉运动幅度是较敏感的老化指标，可进入多元回归方程。

Results : Ratio of rapid filling peak velocity to atrial peak velocity ( E / A ), relaxation time , the angle between septum and the root of aorta and the amplitude of aortic wall movement were the sensitive cardiac aging indexes and could enter multiple stepwise regression equation .

结果：CHF患者二尖瓣环收缩期、舒张早期和舒张晚期峰值速度（分别为Sa，Ea，Aa）及舒张早、晚期峰值速度比值（Ea/Aa）低于正常人（P<0.01）。

Results Peak systolic , peak early diastolic , peak late diastolic mitral annular velocities ( Sa , Ea , Aa ), and Ea / Aa ratio progressively decreased in CHF patients compared with the healthy subjects ( P < 0.01 ) .

用DTI测定室间隔和左室侧壁舒张早期、舒张晚期二尖瓣环运动峰值速度之比值（Ea/Aa），并与超声心动图常规指标E/A比值等作对照分析。

Peak velocities of E wave ( Ea ) and A wave ( Aa ) of the mitral annulus at the points of interventricular septum and lateral wall were measured and the Ea / Aa ratio was calculated .

在峰值速度小于3cm/s时，用黏结剂（粘结厚度小于2mm）或螺栓固定传感器的方法是比较合适的。

At the peak vibration velocity of less than 3 cm / s , the binders ( with binding thickness of less than 2mm ) or bolts is relatively suitable for fixation of sensors .

TSI测量左室心肌12个节段的收缩期达峰值速度时间（Ts），计算12节段Ts的标准差（Ts-SD）和12节段的最大和最小时间的差值（Ts-diff）。

Time to peak systolic velocity ( Ts ) were measured , the standard deviation of Ts ( Ts-SD ) and the maximal temporal difference of Ts ( Ts-diff ) were computed .

结果：下壁、前壁心肌梗死（MI）后三尖瓣环收缩期峰值速度与对照组相比下降（12.0vs16.3cm/s，P<0.01；14.5vs16.3cm/s，P<0.05）。

Results : Compared with control group , the peak systolic velocity of tricuspid annulus was significantly reduced in inferior and anterior MI ( 12.0 vs 16.3 cm / s , P < 0.01 ; 14.5 vs 16.3 cm / s , P < 0.05 );

根据Brune（1970）地震震源破裂模式，导出了地面运动峰值速度参数（rv）与应力降Δσ或环境应力τ0值的依赖关系。

Based on focal fracture mode developed by Brune ( 1997 ), the relations of peak values of ( r , v ), stress drop Δσ and ambient stress τ 0 have been deduced .

与对照组的生理性PSS相比CHF组的病理性PSS峰值速度增高、持续时间延长（P0.05～0.01）。

Compared with the physiological PSS of control group , the pathological PSS of CHF group had a higher peak velocity and a longer time ( P0.05-0.01 ) . Conclusion The pathological PSS of CHF group is obviously different from the physiological PSS of control group .

结果病变组LVEDC较对照组降低（P<0.01），与Doppler舒张晚期血流峰值速度（PVA）增高等异常舒张功能同时出现。

The LVEDC was much lower in patients than in normal subjects ( P < 0.01 ) . The data showed that abnormal Doppler diastolic function such as elevated late diastolic peak flow velocity ( PVA ) and decreased LVEDC occurred simultaneously in these patients .

结果高血压患者无论有无LVH，CFR峰值速度比、CFR速度时间积分比均较对照组明显减低，差异显著（P<0.05，P<0.05）。

Results Regardless of the hypertension patients having LVH or not , the CFR time velocity integrant and the CFR peak diastolic flow velocity were reduced more obviously than the comparing group ( P < 0.05 , P < 0.05 ) .

结果与对照组比较，高眼压组视网膜中央动脉（CRA）舒张末期峰值速度（EDV）明显降低、阻力指数（RI）明显增高（P0.01）；

Results The end diastolic velocity ( EDV ) of central retinal artery ( CRA ) were decreased and the resistance indexes ( RI ) of CRA were significantly higher in intraocular hypertension group ( P0.01 ) and normal intraocular tension glaucoma group ( P0.05 ) .

对正常人20例40只眼和慢性青光眼29例44只眼进行彩色多普勒成像（CDI）检查，分析收缩期峰值速度（PSV）舒张末期速度（EDV）和阻力指数（RI）。

20 normal subjects ( 40 eyes ) and 29 patients ( 44 eyes ) with chronic glaucoma were performed color Doppler imaging . The peak systolic velocity ( PSV ), the end diastolic velocity ( EDV ), and resistive index ( RI ) were determined .

常规测量三尖瓣环上述五个位点的收缩期峰值速度vs，舒张早期峰值速度vdR，舒张晚期峰值速度vdL，计算各点的vdR/vdL值。

The peak systolic flow velocity v s , peak diastolic early period flow velocity v dR and peak diastolic late period flow velocity v dL in the five points of tricuspid annulus were recorded and the values of v dR / v dL in the five points were calculated .

LAD节段：与基础状态比较，LAD狭窄50%时收缩期峰值速度（Vs）略有减少，但无统计学意义（P>0.05），而心尖段收缩期峰值应变率（SRpeak）显著减少或矛盾运动（P<0.05）。

LAD segment : the peak systolic velocities ( Vs ) was slightly decreased , but have no significant difference in 50 % stenosis of LAD ( P > 0.05 ), the peak strain rate ( SRpeak ) in apical segment was significantly decreased ( P < 0.05 ) .

由地面运动峰值速度估算环境应力值

Estimation of surrounding stress value from peak velocity of ground motion