In this paper, using computer science technology, automation control theory, and medical physic diagnose technology to analysis blood-flow signal and image data.
本文综合应用计算机科学技术、自动控制理论和医学物理诊断技术，研究肢体血流图信号处理和肢体血流图像数据的分析方法。
As Doppler shift signal can significantly reflect the speed of flow, the abstracting of Doppler shift signal is the key of blood flow speed testing in a ultrasonic blood flow detector.
超声血流仪实现其测量血流速度的关键是多普勒频移信号的提取，多普勒频移信号是血流速度的真实反映。
There was no obvious blood flow signal on CDFI.
彩色多普勒血流成像示血流信号不明显。
Spot blood flow signals were present on the surface of the lesion. There was no abnormal blood flow signal in the mass.
病变的基底部可探及较丰富的血流信号，表面可探及点状、带状血流信号，病变内部无异常血流信号。
The results that normal signal of blood flow in simple goiter and distinct increase of blood flow in hyperthyroidism were found.
结果两者间甲状腺血流明显不同，单纯性甲肿血流信号正常，甲亢血流明显增加。
Renal contusion detected by Color Doppler reflected decreased or normal blood flow signal.
彩色多普勒显示肾内血流信号减少或无明显异常。
Conclusions Ultrasound contrast agent Levovist improves signal of blood flow obviously. It increases the diagnostic accuracy for intracranial aneurysms and the level of confidence.
结论使用超声造影剂可明显增强颅内血管信号强度，提高颅内动脉瘤的检出率。
Influence of an intake substance upon blood component concentrations and blood flow can be monitored by monitoring the time curves of parameters of the signal waveform.
通过监视信号波形的参数的时间变动，能够监视服用物质给血中成分浓度或血流量带来的影响。
Even if the sampling rate is high, the method makes part of a low blood flow signal clearly visible in frequency domain, and more detailed blood flow sonogram can be obtained.
该方法可以在高采样频率条件下实现低流速血流信号的局部可视化，同时由于局部范围内采样分辨率的提高，将获得更细致的血流声谱图。
A dynamic programming algorithm based on the global optimization is presented to extract the maximum frequency waveform of the Doppler ultrasound blood flow signal.
提出一种基于全局优化的动态规划算法以进行超声多普勒血流信号最大频率曲线的提取。
A nonlinear filtering method based on principle component analysis (PCA) was proposed according to the statistical characteristics of the Doppler ultrasound blood flow signal and wall thump signal.
根据超声多普勒血流信号和血管壁搏动信号的统计特性，提出了一种基于主元分析的非线性滤波方法。
Color Doppler imaging suggested red blood flow signal of central retinal artery (CRA) branched into tumor.
彩色多普勒表现视网膜中央动脉(CRA)红色血流信号进入肿瘤内呈分支状。
Blood flow showed more signal, star or dot in shape, and arterial spectrum.
血流信号较多，星点状，血流频谱为动脉频谱。
The Doppler blood flow signal is inherently a nonstationary Gaussian random process whose time-frequency representation associates with the time-varying velocity of blood flow and its variations.
多普勒超声血流信号是一个非平稳的高斯随机过程，其时频分布与血流的速度及其变化有密切的关系。
Methods: tube flow phantoms which simulating the cerebral blood flow were established. Flow signal intensity of the steady flow in tubes was measured by MR phase-contrast cine technique.
方法：用磁共振相位对比电影法测定模拟脑血液流动的管状模型稳态流动下流体信号强度，并与相应的速率进行相关性分析后分别得出相应的转换函数关系。
Result Wavelet scalogram of blood flow ultrasonic signal had a higher distinguishability than STFT spectrogram in the low frequency portion, but had poorer decussation terms than spectrogram.
结果通过血流多普勒信号的小波尺度图研究科室，发现利用小波尺度图可以眼科提高血流多普勒信号低频段的频谱分辨率。
Both after chemotherapy and radiotherapy, resistance index increases and detectable intratumoural blood flow signal decreases.
经放、化疗治疗后，血流信号减少，血流阻力指数增高。
RESULTS: Hemodynamics of CV could be divided into 4 types: high velocity type (27%), normal velocity type (22%), low velocity type (48%) and blood flow signal absence (2%).
结果：颈性眩晕血流动力学可分为4型：高流型(27%)、正流型(22%)、低流型(48%)、血流信号消失型(2%)。
The blood flow signal disappeared in vessel occlusion.
闭塞时，血流信号消失。
The signal intensity of blood flow in the left ventricular chamber remarkably decreased at 30 minutes after SPIO2 injection.
左心室腔内血流信号强度在造影后30分钟即显著下降。
Color Doppler ultrasound revealed small amount of dotted blood flow signal in 55 nodes (80.9%), with no obvious blood flow signal around nodes.
彩色多普勒血流显像发现55个(80.9%)结节内少量点状血流信号，结节周边无明显血流信号。
Doppler signal reflects blood flow velocity, and the number of the catastrophe chop points can be used to predict coronary heart diseases and route status of blood vessel.
多普勒信号反映了血流速度，多普勒信号突变点的数量，一定程度上可以对冠心病预报，并反映心肌血管路径状况。
Th ere exist complicated mechanism that EA adjusts blood flow distribution and vestibular signal transduction in vestibular organ in VBI model likely , and remain to be researched deeply.
电针效应优于西比灵。VBI模型前庭器官内血流分配及前庭信号转导可能存在复杂的机制，有待深入研究。
So it is of great significance to precisely extract the intact blood flow components from the mixed signal.
因此精确分离超声多普勒血流与管壁信号具有相当重要的临床意义。
Results:The blood flow was abundant around the cancer tissue. The color signal of blood flow showed garland-like or punctate. The feature of its Doppler spectrum was o…
结果：前列腺癌周边血流丰富，彩色血流信号呈花环状或点棒状，多普勒频谱测值为高阻力指数特征。
Results:The blood flow was abundant around the cancer tissue. The color signal of blood flow showed garland-like or punctate. The feature of its Doppler spectrum was o…
结果：前列腺癌周边血流丰富，彩色血流信号呈花环状或点棒状，多普勒频谱测值为高阻力指数特征。
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