Contrast medium assisted fluid flow measurements

摘要: In this paper the development and evaluation of two new approaches for ultrasound time-domain fluid flow measurements by tracking echoes scattered a contrast agent following injection bolus are described. Their feasibility was investigated measuring velocity or profile blood flowing in mock circulatory loop vitro. Measurements were made with one transducer intravessel approach extravessel approach. A hybrid cluster vector cross-correlation method used to track motion scatterers method. This cross correlation developed reduce ambiguity resulted from misregistration which is common problem target correlating signal patterns. The experimental results show good agreement between measured data those estimated timing volume. Although discussions given pertain only measurements, there no reason indicate that these can not be an industrial environment if suitable agents developed. >