A Pulsed Wave Doppler Ultrasound Blood Flowmeter by PMUTs

被引：23

作者：

Ding, Hong ^{[1
,2
]}

Yang, Dengfei ^{[1
]}

Qu, Mengjiao ^{[1
]}

Yang, Chao ^{[1
]}

Chen, Xuying ^{[1
,2
]}

Le, Xianhao ^{[1
]}

Zhu, Ke ^{[1
]}

Xu, Jinghui ^{[3
]}

Lin, Liwei ^{[2
]}

Xie, Jin ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Fluid Power & Mechatron Syst, Hangzhou 310027, Zhejiang, Peoples R China

[2] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA

[3] MEMSound Pte Ltd, Singapore 823270, Singapore

来源：

JOURNAL OF MICROELECTROMECHANICAL SYSTEMS | 2021年 / 30卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Doppler effect; Blood; Electron tubes; Ultrasonic imaging; Acoustics; Velocity measurement; Ultrasonic variables measurement; Piezoelectric micromachined ultrasonic transducer (pMUT); pulsed wave Doppler; blood flowmeter; FLOW; FLUID;

D O I：

10.1109/JMEMS.2021.3103756

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This letter describes a blood flowmeter by the pulsed wave Doppler (PWD) ultrasound detection procedure utilizing piezoelectric micromachined ultrasonic transducers (pMUTs) with the aluminum nitride (AlN) film as the piezoelectric material. The transceiver electronics for the PWD scheme are constructed for system control and signal processing, and a blood-mimicking fluid (BMF) is synthesized for flow velocity tests. Both the average Doppler frequency-shift and Doppler power spectrum density (PSD) shift with respect to the flow velocity have been characterized and validated, and the flow direction can also be recognized. Finally, a real-time pulsatile flow measurement is demonstrated to emulate the feasibility of monitoring blood flows in practice. [2021-0077]

引用

页码：680 / 682

页数：3

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