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A novel imaging processing method using gray level co-occurrence matrix (GLCM) to evaluate microbubble concentration in ultrasonic particle image velocimetry (echo PIV) technique is presented in this paper. The image processing method is used to study the optimum microbubble concentration in Echo PIV imaging of a two dimensional blood flow field. It is found that for the GLCM correlation values for...
Purpose: To develop optimal microbubble contrast agents for high frequency ultrasound imaging systems when examining small animals. Materials and Methods: We prepared microbubbles by encapsulate (Perfluoropropane) C3F8 into phospholipids shell, and the size distribution of the microbubbles was measured by PSS 780A particle sizing systems. A major peak was observed in the size distribution of the microbubbles...
Developments of many cardiovascular problems have been shown to have a close relationship with arterial flow conditions. An ultrasound-based particle image velocimetry technique (Echo PIV) was recently developed to measure multi-component velocity vectors and local shear rates in arteries and opaque fluid flows by identifying and tracking flow tracers (ultrasound contrast microbubbles) within these...
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