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首页> 外文会议>SPIE Conference on Ultrasonic Imaging and Tomography >Transverse oscillation vector flow imaging for transthoracic echocardiography
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Transverse oscillation vector flow imaging for transthoracic echocardiography

机译：横发超声心动图的横向振荡载体速度成像

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摘要

This work presents the development and first results of in vivo transthoracic cardiac imaging using an implemen- tation of Vector Flow Imaging (VFI) via the Transverse Oscillation (TO) method on a phased-array transducer. Optimal selection of the lateral wavelength of the transversely-oscillating receive field is described, and results from Field II simulations are presented. Measurements are made using the SARUS experimental ultrasound scanner driving an intercostal phased-array probe. The acquisition sequence was composed of interleaved frames of 68-line B-mode and 17-direction, 32-shot vector velocity flow images. A flow pump was programmed for constant flow for in vitro acquisitions at varying depths in a tissue-mimicking fluid. Additionally, mitral, aortic, and tricuspid valves of two healthy volunteers were scanned from intercostal acoustic windows. The acquired RF data were beamformed via the TO method, and fourth-order estimators were employed for the velocity estimation. The resulting images were compared with those from conventional spectral Doppler and color flow mapping sequences. VFI is shown to be a clinically-feasible tool, which enables new flexibility for choosing acoustic windows, visualizing turbulent flow patterns, and measuring velocities.
机译：该工作介绍了使用横向振荡（至）方法在相位阵列换能器上的横向振荡（至）方法的横向振荡（VFI）的体内Transthoracic心脏成像的开发和第一结果。描述了横向振荡接收场的横向波长的最佳选择，并提出了来自域II模拟的结果。使用Sarus实验超声扫描仪驱动嵌入相控阵探头进行测量。采集序列由68线B模式的交织帧和17方向，32次射击向量速度流动图像组成。将流量泵编程用于恒定流动，用于在组织模拟液中以不同深度的体外采集。此外，从跨越声窗扫描两个健康志愿者的二尖瓣，主动脉和三尖瓣。获取的RF数据通过TO方法波束形成，并且使用四阶估计器用于速度估计。将得到的图像与来自常规光谱多普勒和颜色流动映射序列的图像进行比较。 VFI被证明是一种临床可行的工具，它可以实现新的灵活性来选择声窗，可视化湍流模式和测量速度。

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