血流

Results: CDI shows a band vascular structure coursing through the band-shaped moderately echogenic structure in the central portion of vitreous chamber, with the apex located near the optic disk and the base...

结果：CDI显示在玻璃体腔内呈条索状回声影内显示血管血流，由视乳头向晶体后延伸，频谱分析为动脉血流。

However, mechanical prosthetic valve has poor biocompatibility, and biological valve is easy to degrade and to be damaged. People have studied a new material to make valve. Giant molecule materials-made no-stent bio-mitral valve with chordae tendineae is similar to normal valve.

生物瓣具有血流动力学性能优秀，不需终生抗凝等优点，但机械瓣的生物相容性较差、生物瓣易退化损坏等问题，使人们开始对新的瓣膜制作材料进行研究，使用高分子材料制成的无支架带腱索生物二尖瓣与自然瓣膜相似，可维持人体二尖瓣生理功能、左室几何形状和血流动力学。

Methods Total 67 patients were divided into mild group, moderate group and severe group according to international prostate symptom score. Every patient took a 5-item version of the international index of erectile function (IIEF-5) test. The peak systolic velocity and end diastolic velocity of cavernosal artery were measured by color doppler ultrasonography.

对67例老年ED患者按照国际前列腺症状评分分为轻度、中度、重度LUTS 3组，比较3组间国际勃起功能指数－5(IIEF-5)评分和阴茎海绵体动脉的收缩期最大血流速率和舒张末期血流速率。

Pulsed Doppler echocardiograph was used to test separately blood flow velocity wave of ascending aorta arcus, aorta and abdominal aorta in of 17 patients with aortic insufficiency with nonliner factor and results compared with those of 15 normal subjects of the same ages. The purpose was to disclose the regulation of blood flow waveform distortion in arterial system and the existance of shock wave.

应用超声多普勒对存在非线性因素的17名主动脉瓣关闭不全患者的升主动脉、主动脉弓以及腹主动脉进行分段逐点测试血流速度波，并和年龄相匹配的15名健康受试者为对照进行前瞻性探究，以探索人体动脉系统中血流波形畸变的规律及激波的存在。

Pulsed Doppler echocardiograph was used to test separately blood flow velocity wave of ascending aorta arcus, aorta and abdominal aorta in of 17 patients with aortic insufficiency with nonliner factor and results compared with those of 15 normal subjects of the same ages. The purpose was to disclose the regulation of blood flow waveform distortion in arterial system and the existance of shock wave.

应用超声多普勒对存在非线性因素的17名主动脉瓣关闭不全患者的升主动脉、主动脉弓以及腹主动脉进行分段逐点测试血流速度波，并与年龄相匹配的15名健康受试者为对照进行前瞻性研究，以探讨人体动脉系统中血流波形畸变的规律及激波的存在。

Afterwards,except for 2 severe cases,who were in continuous hypoperfusion and died,in the others,the cerebral perfusion started to be increased,the blood flow diameters of arteriolae of ARUMS were dilated,the ARUMS was recovered gradually, the velocity of CA was increased,and RI was decreased.

之后，除了2例重度患儿持续&少灌注&状态而死亡外，其余患儿脑血流灌注开始增加，大脑内侧面上部边缘小动脉血流直径扩大，血管网络逐渐恢复，脑动脉流速增加，阻力指数下降。

After 20, 40, 60 or 90 minutes ischemia and 120 minutes reperfusion, the ratio of necrotic to no-necrotic liver were 3.9%, 13.5%, 66.4% or 82.7%, of those the percentage necrosis during reperfusion 120 minutes was 7.7%, 11.1%, 68.1% or 67.2% respectively; The liver volume of blood flow decreased to 94.7%, 85.3%, 55.9% or 43.5% of normal values in end of ischemia; Liver sinusoidal obstruction by blebs originating from the hepatocytes, fragments of sinusoidal endothelial cell damage and aggregation of blood cells was observed in group of 60, 90 minutes ischemia.

血流阻断20、 40、 60和90 min组再开放2 h，肝总坏死范围分别为3.9%、 13.5%、 66.4%和82.7%，其中肝血流开放后的肝坏死范围分别占肝总坏死范围的7.7%、 11.1%、 68.1%和67.2%；肝门静脉恒压灌流量于阻断期末分别下降5.3%、 14.7%、 44.1%和56.5%；肝血窦在阻断20、 40 min组无阻塞现象，阻断60和90 min组出现血细胞，膜浆泡和纤维束积滞，阻塞血窦面积占肝血窦总面积的50%。

Using 2MHz pulseultrasonic Doppler probe, the index of hemodynamics such as blood flow rate、audio frequency、vascular pulsation of bilateral vertebral and basilar arteries were detected in order to analyze the diagnosis of cervical spondylosis involoving vertebral artery by Transcranial Color Doppler through the occipital foramen. Results: of all 108 carses, 80 cases were positive(positive rate 74.7%). In CSA group,cases of low flow rate were 45.6%,cases of high flow rate were 28.7%,and cases of no...

为分析经颅多普勒检测椎动脉型颈椎病的诊断价值，采用配对研究方法，用 2MHz脉冲多普勒探头经枕骨大孔窗口，检测左、右椎动脉及基底动脉的血流速度、流向、音频、血管博动指数等血流动力学指标，结果显示 10 8例患者有 80例异常，异常率 74 7%，并发现CSA组低流速者占 45 4 %，高流速者占 2 8 7%，正常流速者占 2 5 9%，与正常对照组间有显著差异(P 0 1)，总体而言，低流速型是CSA的主要特征之一。

Results In all the 41 cases traumatice retinal detachment, included partial 28 cases, completely 9, dated 2 cases and completed with detachment of choroids in 2 cases, vitreous opacity and color blood steam were seen.

结果：本组41例外伤性视网膜脱离，部分性视网膜脱离28例，完全性视网膜脱离9例，陈旧性视网膜脱离2例，合并脉络膜脱离的视网膜脱离2例，所有病例均有不同程度的玻璃体混浊，其中39例网脱光带上可见彩色血流及与视网膜中央动脉及静脉相类似的血流频谱。

Results:There were luminal dilations of the femoral vein(12.9±2.7mm vs 9.2±2.1mm,P＜0.001)and the popliteal vein(8.8±1,2mm vs 5.9±1.5mm,P＜0.001)in the acute stage of all cases compared to the healthy extremity.There were low echoes in the thrombosed segments by 2D and no blood flow signals by CDFI.

结果：19例急性血栓形成患者入院初诊患肢深静脉内径较健肢明显增宽，股静脉(12.9±2.7)mm vs (9.2±2.1)mm，P＜0.001；静脉(8.8±1.2)mm vs (5.9±1.5)mm，P＜0.001 ，管腔内呈低回声，CDFI未显示血流信号或有血流充盈缺损。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。