颈动脉血管血流参数超声实时定量测试系统的研制

The development of an ultrasonic continuous quantitative measuring system for carotid blood flow parameter

本文介绍的系统基于连续波多普勒效应和脉冲回波锁相跟踪相结合的方法.采用特殊结构的探头,消除了流速波束夹角对多普勒血流测量结果的影响;应用单片机控制系统,实现了血管管径、血流速度和血流流量的数字化实时定量测量。

This paper describes the principle and development of a system for measuring vessel di amete and blood flow. By combining continuous wave Doppler with echo phase-tracking method, the system eliminates the error of the angle between ultrasound beam and blood flow by using a transducer with specia structure. Digital result is obtained for quantitative measurement of vessel diameter, blood velocity and volume flowrate in real-time controlled by single-chip microcomputer.