Implementation of a smart-phone based portable Doppler flowmeter

Chih Chung Huang, Po Yang Lee, Pay Yu Chen

研究成果: Conference contribution

5 引文 斯高帕斯(Scopus)

摘要

Blood flow measurement by using Doppler ultrasound has become a useful tool for diagnosing cardiovascular diseases and as a physiological signal monitor. Recently, a couple of pocket-sized ultrasound scanners have been introduced for portable diagnosis. However, it is not convenient to apply Doppler measurements by commercial duplex scanner during exercise or sleeping due to the shape of handheld probe. In addition, most devices use the digital integrated circuits to process the Doppler signals from flowing blood. However, some attached components are needed such as RF and/or audio ADC, on board memory, programmable timer, and LCD graphic display module and its control circuit. In order to simplify these complex circuits, an implementation of a smartphone based portable ultrasound pulsed-wave (PW) Doppler flowmeter is reported in this study. A 10-MHz ultrasonic surface transducer was designed for the dynamic monitoring of blood flow velocity. The directional audio Doppler shift signals were obtained using a portable analog circuit system. After hardware processing, the Doppler signals were fed directly to an Android-based smartphone for Doppler spectrogram analysis and display in real-time. In order to verify the portable device, a Couette flow phantom was used to simulate the flowing blood for in vitro verification. Doppler spectrograms of porcine blood flow were measured using this stand-alone portable device under the pulsatile condition. Finally, the arterial blood flow of a volunteer carotid was measured in vivo to verify the performance of the smartphone-based portable PW Doppler ultrasound device. All of the results demonstrated the potential of using a smartphone as a novel embedded system for portable medical ultrasound applications.

原文English
主出版物標題2011 IEEE International Ultrasonics Symposium, IUS 2011
頁面1056-1059
頁數4
DOIs
出版狀態Published - 2011 十二月 1
事件2011 IEEE International Ultrasonics Symposium, IUS 2011 - Orlando, FL, United States
持續時間: 2011 十月 182011 十月 21

出版系列

名字IEEE International Ultrasonics Symposium, IUS
ISSN(列印)1948-5719
ISSN(電子)1948-5727

Other

Other2011 IEEE International Ultrasonics Symposium, IUS 2011
國家United States
城市Orlando, FL
期間11-10-1811-10-21

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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