Fei D Y, Fu C T, Liu D D
Biomedical Engineering Program, Virginia Commonwealth University, Richmond 23298, USA.
Comput Biol Med. 1995 Nov;25(6):495-503. doi: 10.1016/0010-4825(95)00039-4.
Doppler color imaging can easily render flow information within the vessels and simultaneously provide anatomic information for diagnostic purposes. However, the angle dependence problem of the Doppler velocity measurement is a significant barrier for continuing progress toward quantitative clinical applications of this technology. This paper presents a method and the computer implementation for reconstruction of the 2-D flow velocity field (angle independent) in ultrasound Doppler color imaging. Formulae for deriving angle independent velocity amplitude and angle direction from the color images acquired with a linear array transducer are given. The hardware configuration of the data acquiring and processing system is described. Major considerations in the development of algorithms, especially the strategies for reducing the computation time are presented.
多普勒彩色成像能够轻松呈现血管内的血流信息，并同时提供用于诊断目的的解剖信息。然而，多普勒速度测量的角度依赖性问题是该技术在定量临床应用方面持续发展的一个重大障碍。本文提出了一种在超声多普勒彩色成像中重建二维流速场（与角度无关）的方法及其计算机实现。给出了从线性阵列换能器采集的彩色图像中推导与角度无关的速度幅值和角度方向的公式。描述了数据采集和处理系统的硬件配置。介绍了算法开发中的主要考虑因素，特别是减少计算时间的策略。
