使用多平面脉冲多普勒超声测量无角度校正的容积流量。

Measurement of volumetric flow with no angle correction using multiplanar pulsed Doppler ultrasound.

作者信息

Poulsen J K, Kim W Y

机构信息

Institute of Experimental Clinical Research, Skejby Sygehus, Aarhus, Denmark.

出版信息

IEEE Trans Biomed Eng. 1996 Jun;43(6):589-99. doi: 10.1109/10.495278.

DOI:10.1109/10.495278

PMID:8987263

Abstract

In this paper we show that by scanning at points on the surface of a sphere that the normal angle correction used in pulsed Doppler flow measurements is no longer necessary. Thus, it is possible to measure three-dimensional (3-D) flow using multiplanar ultrasound even though we only get one-dimensional (1-D) velocity information from pulsed Doppler ultrasound. The technique handles the three basic problems in flow measurements using ultrasound Doppler: The variations of the cross-sectional area, the time dependent changes in the velocity field, and the dependency of the angle of insonation. The technique is tested in a flow phantom using different angles of insonation to validate the angle independence of this new technique. Using six different angles of insonation in the range 0 degree to 69 degrees with flowrates in the range of 0-170 ml/s a linear dependence was found to be: measured (color Doppler) = 0.98 real flow (reference) + 1.36 ml/s, with a 95% confidence interval of +/- 13.9 ml/s.

摘要

在本文中，我们表明，通过在球体表面的点上进行扫描，脉冲多普勒血流测量中使用的法向角校正不再必要。因此，即使我们仅从脉冲多普勒超声获得一维速度信息，也可以使用多平面超声测量三维（3-D）血流。该技术解决了使用超声多普勒进行血流测量时的三个基本问题：横截面积的变化、速度场随时间的变化以及声束入射角度的依赖性。在流动模型中使用不同的声束入射角度对该技术进行了测试，以验证这种新技术的角度独立性。在0度至69度范围内使用六个不同的声束入射角度，流速范围为0 - 170 ml/s，发现线性相关性为：测量值（彩色多普勒）= 0.98×实际血流（参考值）+ 1.36 ml/s，95%置信区间为±13.9 ml/s。