TISSUE DISPLACEMENT MEASUREMENT USING ULTRASONIC WAVE ADAPTIVE DIGITAL DETECTION METHOD

被引：0

作者：

OTAKI, H

YAMAKOSHI, Y

机构：

[1] Gunma University, Gunma, 376, 1-5-1 Tenjin-cho, Kiryu-shi

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1995年 / 34卷 / 5B期

关键词：

DISPLACEMENT MEASUREMENT; DOPPLER SIGNAL DETECTION; ADAPTIVE DIGITAL SIGNAL PROCESSING; QUADRATURE DETECTION ALGORITHM; FETAL MOVEMENT MONITORING;

D O I：

10.1143/JJAP.34.2835

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have developed an internal small-displacement measurement system based on the ultrasonic wave pulsed Doppler technique. In the system, the ultrasonic wave Doppler frequency shift due to tissue movement is detected by using either an analog-type quadrature detector or digital detection algorithm. In this paper,we propose an adaptive digital detection algorithm which can derive a Doppler frequency shift signal with higher precision and with higher Signal-to-noise ratio than the conventional method. The comparison between the proposed method and the conventional method is shown through both numerical analysis and basic experimentation.

引用

页码：2835 / 2839

页数：5