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Purpose: Hemodynamic changes in vascular stenosis could affect blood flow component of flow distribution which changed the nature of vascular smooth muscle cells. Observation and analysis of blood flow in the heart disease have important clinical significance of treatments of arterial stenosis. Method: The ultrasonic particle image velocimetry (Echo PIV) technique is appropriate for measuring blood...
Many recent studies on ultrasonic particle image velocimetry (Echo PIV) showed that the accuracy of two-dimensional (2-D) flow velocity measured depends largely on the concentration of ultrasound contrast agents (UCAs) during imaging. This article presents a texture-based method for identifying the optimum microbubble concentration for Echo PIV measurements in real-time. The texture features, standard...
Previous studies showed that the concentration of ultrasound contrast agents (UCAs) during imaging would impact greatly on the accuracy of flow velocity measurements using ultrasonic particle image velocimetry (Echo PIV) technique. This paper presents a texture-based method to identify the optimum concentration of UCAs for Echo PIV. The first-order and seconded-order texture features, standard deviation,...
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