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High-speed ultrasound volumetric imaging system. I. Transducer design and beam steering

机译:高速超声体积成像系统。一,换能器设计与光束转向

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Transducer design and phased array beam steering are developed for a volumetric ultrasound scanner that enables the 3-D visualization of dynamic structures in real time. The authors describe the design considerations and preliminary evaluation of a high-speed, online volumetric ultrasound imaging system that uses the principles of pulse-echo, phased array scanning with a 2-D array transducer. Several 2-D array designs are analyzed for resolution and main lobe-side lobe ratio by simulation using 2-D fast Fourier transform methods. Fabrication techniques are described for 2-D array transducer. Experimental measurements of pulse-echo point spread responses for 2-D arrays agree with the simulations. Measurements of pulse-echo sensitivity, bandwidth, and crosstalk are included.
机译:传感器设计和相控阵束转向技术是为容积式超声扫描仪开发的,可实时对动态结构进行3D可视化。作者介绍了使用二维回波换能器的脉冲回波,相控阵扫描原理的高速在线体积超声成像系统的设计注意事项和初步评估。通过使用二维快速傅立叶变换方法进行仿真,分析了几种二维阵列设计的分辨率和主瓣旁瓣比。描述了2-D阵列换能器的制造技术。 2-D阵列的脉冲回波点扩展响应的实验测量结果与仿真结果一致。包括脉冲回波灵敏度,带宽和串扰的测量。

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