三维彩色多普勒超声成像系统体外估计人工心脏瓣膜下游的血流参数

H. Sava, P. Pibarot, J. Dumesil, A. Fenster, L. Durand
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引用次数: 6

摘要

本文介绍了一种用于人工心脏瓣膜下游血流参数估计的三维彩色超声成像系统。该系统由ATL Ultramark 9 HDI彩色多普勒超声仪(38毫米孔径和5 MHz高分辨率线性阵列换能器)、3D超声成像系统和体外循环系统组成,在体外循环系统下测试人工心脏瓣膜。在St. Jude人工心脏瓣膜中获得的初步结果表明,该技术可以成功地用于估计平均流速、前向流的横截面积和射流的影响。需要进一步的工作来对流速进行更定量的评价。在此背景下,提出了一些改进速度估计的建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A 3D colour Doppler ultrasound imaging system for in vitro estimation of flow parameters downstream of prosthetic heart valves
The paper presents a 3D colour ultrasound imaging system for the estimation of flow parameters downstream of prosthetic heart valves. The system consists of an ATL Ultramark 9 HDI colour Doppler ultrasound machine with a 38 mm aperture and a 5 MHz high resolution linear array transducer, a 3D ultrasound imaging system, and an in vitro circulation system under which the prosthetic heart valves are tested. Preliminary results obtained in the case of St. Jude prosthetic heart valves show that the technique can be used successfully to estimate the mean flow velocity, the cross-sectional area of the forward flow, and the impact of the jets. Further work is required for more quantitative evaluation of flow velocity. In this context, some suggestions are presented in order to improve the velocity estimation.
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