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- ResultsUnit head circumference maximum and mean blood flow velocities per minute of fetus with hyperdynamic circulation were higher than that of normal fetus(P<0.001). 结果高动力循环状态组胎儿每分钟单位头围大脑中动脉的最大速度及平均速度均高于正常组（P<0.;001）。
- Methods Manifestation on two-dimensional images,blood flow velocities,RI and S/D ratio were observed respectively between the normal men and the patients,and statistical treatment was done. 方法正常组与病变组对比观察二维声像图表现、血流信号的多少、血流速度、RI、S/D比值,并进行统计学处理。
- All individuals underwent transcranial Doppler ultrasonography (TCD) with assessment of mean blood flow velocity (MV) in the MCAs. 所有对象都通过经颅多普勒测定大脑中动脉的平均血流速度。
- Objectives To evaluate the fetal blood flow velocity waveforms (FVWs) in relation to the perinatal outcomes. 目的探讨胎儿血流速度波型与围产儿结局的关系及高危妊娠胎儿缺氧时血液动力学变化的特点。
- Objective To investigate the influence of cardiac motion on the measurement of Doppler blood flow velocity through an in vitro model. 目的通过体外模拟实验，研究心脏运动对频谱多普勒血流速度测定的影响。
- The detection of blood flow velocity can help diagnose vascular diseases such as angiosclerosis , angiostenosis or angiemphraxis. 血液流速的检测有助于诊断血管硬化、狭窄或阻塞等血管类疾病。
- Brachial artery diameter and blood flow velocity were measured with the Doppler ultrasound at basal and at hyperemic condition respectively. 结果CHD患者肱动脉加压前后的血管直径和血流速度变化百分比明显小于正常对照组;
- PVs' number, diameter or blood flow velocity and the clinical stages, with a relationship index of 0.48, 0.55 and 0.51, respectively (P<0.05). 结果：彩色多普勒超声检出交通静脉扩张的“数目、内径及血流速度”与患者临床表现分级呈正相关，相关系数分别为0.;48、0
- Non-vasovagal response was defined gradual onset of substantial change of heart rate, blood pressure, or cerebral blood flow velocity. 单独长时间倾斜组测验的结果为：阴性反应26人(70%25)，非血管迷走反应11人(30%25)，血管迷走反应0人；
- The results showed that the group of liver yang overactivity was mainly manifested by mean blood flow velocity increasing in MCA of the affected side. 为探讨现代医学影像检测技术与头风证辨证分型中之肝阳上亢、痰浊上扰型的相关性对122例肝阳上亢、痰浊上扰型头风证病人进行了经颅多普勒检测及对照分析。
- Objective To investigate the effect of sodium nitroprusside(SNP) on cerebral blood flow velocity (CBFV)and cerebral vessel resistance. 目的研究硝普钠在冠状动脉搭桥手术中对脑血流速度的影响及在提高大脑供血供氧方面的意义。
- Results The increased percentage of the brachial artery diameter and blood flow velocity at hyperemic condition was lower in patients with CHD than that in normal controls. 而舌下含服硝酸甘油前后肱动脉内径及血流速度变化百分比在两组之间无明显差异。
- The blood flow velocity of mitral during early diastole（E）and atrial contraction（A）were also measured by pulsed Doppler echocardiography and E/A ration was calculated. 结果正常组舒张早期峰值速度（E）>左房收缩期峰值速度（A），E/A>1;
- Resultes 1.Compared with control group on the first day, renal artery blood flow velocity and flow volume of asphyxiated group were decreased and resistance was increased. 结果1.;窒息后新生儿第1天肾动脉血流速度和血流量较正常对照组低下，阻力增加，这种改变随窒息程度加重而加重。
- The vascular wall shear rate measurement, unambiguous turbulence measurement and maximum blood flow velocity correction methods using transverse Doppler technique were represented, and in vitro and in vivo experiment results were reported. 本文提出了利用横向多普勒技术估计血管剪切率、进行无模糊湍流测量以及最大血流速度校正的新方法 ,设计了多通道横向多普勒系统 ,实验结果证实了横向多普勒技术在血流动力学领域应用的有效性。 本文从应用方面扩展了横向多普勒技术的研究领域。
- Cerebral blood flow velocity of arteriae cerebri media (MCA) and arteriae cenebri anterior (ACA) increased by 15.4% and 11.4% respectively compared with those before treatment (P<0.05). 患侧大脑中动脉(MCA)及大脑前动脉(ACA)的血流速度比治疗前分别增加15.;4%25及11
- The systolic end diastolic and mean blood flow velocity of arteria cerebri anterior and middle cerebri anterior descended significantly in postnatal 24h comparison with the control group(P<0.01). 出生后24小时;窒息新生儿大脑中动脉、大脑前动脉收缩期及舒张末期血流速度均下降;尤其以舒张末期血流下降为明显;与正常组比较;差异有极显著性意义(P<0.;01)。
- Methods Blood flow velocity in CRA and OA and change of hemorheology in 33 patients with CRVO and 33 controls were measured by color doppler imaging (CDI) using Acuso N-128XP/10(USA). 方法 采用美国AcusoN12 8XP/ 10彩色多普勒成像 (CDI)技术检测 33例CRVO患者和 33例正常人CRA OA血流动力学及血液流变学改变。
- Methods: In 45 cases (50 lower limbs) with differernt clinical stages of venous incompetence of lower extremities, the number, diameter and blood flow velocity of PVs were examined by color Doppler ultrasound. 方法：用彩色多普勒超声检查下肢静脉功能不全患者45例50条下肢的小腿交通静脉的数目、部位、内径及血流速度，并分别与患者的临床表现分级进行相关性分析。
