一种基于EchoPIV的水泵系统内固液两相流测量方法,其具体过程为:建立适用于EchoPIV测量的可视化水泵系统;基于多次迭代算法和亚像素边缘检测方法修正EchoPIV粒子图像互相关算法,并结合滤波和双线插值函数消除伪向量;建立EchoPIV速度修正公式;基于BEM的反演算法修正EchoPIV测量失效区域的速度矢量;分析清水条件下超声扫描深度和...
The combination of ultrasound echo images with digital particle image velocimetry (DPIV) methods has resulted in a two-dimensional, two-component velocity field measurement technique appropriate for opaque flow conditions including blood flow in clinical applications. Advanced PIV processing algorithms includi...
Volumetric Echocardiographic Particle Image Velocimetry (V-Echo-PIV) The expected velocity fields were successfully predicted by V-Echo-PIV. In this work, we showed a method to image blood flow in 3D based on volumetric images of human heart using no contrast agent.Falahatpisheh, Ahmad... A ...
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VolDICOMs were processed with V-Echo-PIV to obtain RV blood flow velocity field during the full cardiac cycle.Results: We improve the frame rates' scan lines to +30Hz. A 100Hz is achieved by stitching 4 cycles. We show that 4D RV flow can be quantified and characterized at high ...
Valdes-Curz.In VIVO validation of the echo-PIV technique: Animal and clinical studies. Summer Bioengineering Conference . 2003R. Shandas,H.B. Kim,J. Hertzberg,C.G. DeGroff,E. Monet,L. Valdes-Curz.In VIVO validation of the echo-PIV technique: Animal and clinical studies.Summer ...
We introduce a novel motion estimation approach for Echo PIV for the laminar and steady flow model. We mathematically formalize the motion estimation problem as a parametrization of a dictionary of particle trajectories by the physical flow parameter. We iteratively refine this unknown parameter by ...