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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Triple-beam lens transducers for three-dimensional ultrasonic fluidflow estimation
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Triple-beam lens transducers for three-dimensional ultrasonic fluidflow estimation

机译：三光束透镜换能器，用于三维超声流体流量估算

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摘要

This paper reports on estimating the 3-D flow velocity vector ofnblood with ultrasound triple-beam lens transducers. The design,nconstruction, and characterization of experimental lens transducers isndescribed along with the theory of 3-D flow velocity estimation. Antriple beam lens transducer consists of three piezoelectric elementsnmounted on the top surface of a lens. The lens acts to direct and focusnthe ultrasound from the elements such that three parallel, closelynspaced ultrasound beams are generated. Blood cell scatterers are trackednas they move along the beams and from beam to beam using RF correlationntechniques. Lenses from fused quartz and aluminum have been designed andnfabricated, and the characteristics of the lenses along with lens designnconsiderations and tradeoffs are discussed. The three-dimensional flownvelocity vector of fluid in a blood flow phantom has been experimentallynmeasured with an aluminum lens, indicating that the accurate estimationnof the 3-D blood flow velocity vector is possible
机译：本文报道了用超声三束透镜换能器估计血液的3-D流速矢量的方法。结合3-D流速估计理论，描述了实验透镜换能器的设计，构造和特性。三束透镜换能器由安装在透镜顶面上的三个压电元件组成。透镜起着引导和聚焦来自元件的超声波的作用，从而产生三个平行的，紧密间隔的超声波束。跟踪血细胞散射体，它们使用射频相关技术沿波束移动，并在波束之间移动。已经设计并制造了由熔融石英和铝制成的镜片，并讨论了镜片的特性以及镜片的设计注意事项和折衷方案。血流模型中流体的三维流动速度矢量已通过铝透镜进行了实验测量，这表明可以准确估计3D血流速度矢量

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