血流

Objective To investigate the possibility of using laser Doppler flowmetry to study dental pulpal blood flow.

中华口腔医学杂志000216 目的探索利用激光多普勒血流仪研究牙髓血流的可行性。

The respiratory pulsatility of flows in portal vein were studied,and the pulsatility index and the correlative index between the PI and the quantity of TR were calculated.

在正常呼吸的情况下观察门静脉血流频谱的波动性，并计算血流波动系数以及波动系数与三尖瓣返流量的相关系数。

The sites headache were lateral or bilateral lunwem114frontotemporal and parietal, features of pain were blunt and pulsative,last for 15～30 minutes. All the patients had abnormal TCD, 11 cases had increased asymmetric cranial blood flow, 4 cases had decreased brain blood flow.

头痛主要为单侧或双侧额颞、头顶部钝痛或搏动性痛，持续15～30 min.15例患儿TCD检测全部有异常，11例颅内血管呈不对称性血流速度增快，4例血流速度减慢。

The blood flow imaging including pulsative index and resistant index of uterine artery were measured to investigate the caus e of female infertility by using color Doppler energy. Abdominal CDE exami nation was carried out in 67 women with infertility confirmed under laparoscopy on days 20 to 23 of the menstruation.

利用彩色多普勒能量图测定子宫的血流，即血流的脉冲指数（pulsative index，PI）及阻力指数（resistant index，RI）来探索不同原因的女性不孕症。67例不孕症妇女经腹腔镜诊断确诊不孕原因后，于月经周期第20～23 d 作腹部B超彩色多普勒能量图检查。

Department of Obstetrics and Gynecology, Tongji Hospit al, Tongji Medical University, Wuhan 430030Abstract: The blood flow imaging including pulsative index and resistant index of uterine artery were measured to investigate the caus e of female infertility by using color Doppler energy. Abdominal CDE exami nation was carried out in 67 women with infertility confirmed under laparoscopy on days 20 to 23 of the menstruation.

利用彩色多普勒能量图测定子宫的血流，即血流的脉冲指数（pulsative index，PI）及阻力指数（resistant index，RI）来探索不同原因的女性不孕症。67例不孕症妇女经腹腔镜诊断确诊不孕原因后，于月经周期第20～23 d 作腹部B超彩色多普勒能量图检查。

The decreased MSD and SRRmax, and the delayed MTT and TTP refect the disturbance of local cerebral microcirculation. This is because of the result of X-ray induced endovascular hyperplasia and the slowness of the local blood flow, and further support the theory of vascular injury in the injuried areas.

MSD、SRRmax的下降和MTT、TTP的延长，综合反映了放射性脑损伤局部微循环血流动力学的障碍，这是由于放射线引起血管内膜增生、血流缓慢的结果。

The calculated regurgitant flow rates by using the hemispheric flow convergence equation were compared with actual regurgitant flow rates.

用半球血流会聚公式计算血流会聚返流量，与实际返流量进行比较。

The regurgitant volume was calculated by temporally integrating the instantaneous flow volume rate of each frame during systole.

建立了基于经食道旋转扫描二维和经胸实时三维超声多普勒血流图像获取方法和图像插值、配准算法获得体数据，经多维重建描述二尖瓣反流速度的空间分布，立体观察返流的时相、方向、反流束长度、面积、体积、空间传播和严重程度等；通过重建反流后的速度场，从血流动力学角度分析了二尖瓣反流的性质，计算偏心反流束的湍流强度，利用反流束角度和湍流强度对计算结果进行修正；基于实时三维彩色多普勒成像技术，利用控制体原理对二尖瓣反流束在反流瓣口横断面的速度分布进行空间与时间积分获得二尖瓣偏心性反流的每搏反流量。

It is the crux of treating acute cerebral infarction to rescue the neurons from the ischemic damage by way of achieving repatency of the regional cerebral blood flow as soon as possible.

尽快恢复该区域的血流，减少神经细胞缺血性损伤是治疗脑梗塞的关键。由于缺血边缘区微循环形态学的改变与血流代谢的变化密切相关，直接影响边缘区的转归。

The tumors with ill defined border or with spiculated had higher axillary lymph node metastatic probabilities than tumors with clear outline.

病灶内彩色血流信号丰富程度与肿瘤的大小、腋窝淋巴结转移呈正相关，即：肿瘤越大，彩色血流分布越丰富，淋巴结转移几率越高。

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。