目的探讨眼球后血管血流速度降低及阻力指数升高与原发性开角型青光眼的关系。
Objective to determine whether lower blood velocities and high resistive index in the retrobulbar arteries are primary or secondary to glaucoma damage in patients with primary open-angle glaucoma.
病灶局部所测血流动力学参数为收缩期峰值血流速度PS V，舒张末期血流速度(EDV)及阻力指数ri。
The hemodynamic parameters measured in the lesion locations included peak systolic velocity (PSV), end diastolic velocity (EDV), and resistance index (RI).
方法选用高频手术专用探头，于手术中门静脉、肝动脉吻合完成后立即测量肝动脉及门静脉血流速度，并计算快速充盈时间及阻力指数。
Methods Liver scanning was performed with a high frequency transducer to measure the velocity acceleration time and resistant index of portal vein and hepatic artery after finishing the anastomosis.
方法本组89例，应用高频率的彩色多谱勒超声检查肿大淋巴结的形态及内部回声、纵横比（L/T）、彩色多谱勒血流显像（CD FI）及阻力指数（RI）的频谱特征。
Methods The manifestation, internal echo, the L/T ratio, CDFI and RI frequency spectrum feature of the superficial lymph nodes were studied with high frequency and color Doppler ultrasound 89 cases.
提示急性心肌梗死患者口服氯沙坦产生外周阻力及心肌耗氧量下降，心指数增加等有益的血流动力学效应。
The results showed that oral losartan administrated to patients with ami resulted in beneficial hemodynamic effects, such as decrease of SVR and oxygen consumption, increase of cardiac index.
而两者间内缘或内部彩色血流显像及峰速或阻力指数均无差异。
CDF1 and PW were unsignificant differences in Flow Imaging, Velocity Peak and Resistance Index.
方法对190例正常人，运用灰阶、彩色多普勒及高频超声检查LGA内径、最高流速、最低流速、平均流速、阻力指数和血流量。
Methods Total 190 normal subjects, 97 males and 93 females, were examined by gray scale, color Doppler and high frequency ultrasound to detect LGA.
方法对190例正常人，运用灰阶、彩色多普勒及高频超声检查LGA内径、最高流速、最低流速、平均流速、阻力指数和血流量。
Methods Total 190 normal subjects, 97 males and 93 females, were examined by gray scale, color Doppler and high frequency ultrasound to detect LGA.
应用推荐