NDLI: Two-dimensional blood flow vectors obtained with bidirectional Doppler ultrasound

Content Provider	IEEE Xplore Digital Library
Author	Masuno, G. Nagaoka, R. Omori, A. Ishikawa, Y. Akagawa, O. Arakawa, M. Saijo, Y.
Copyright Year	2014
Description	Author affiliation: Grad. Sch. of Biomed. Eng., Tohoku Univ., Sendai, Japan (Masuno, G.; Nagaoka, R.; Omori, A.; Ishikawa, Y.; Akagawa, O.; Arakawa, M.; Saijo, Y.)
Abstract	Precise measurement of blood flow is important because blood flow closely correlates formation of thrombus and atherosclerotic plaque. Among clinically applied modalities for blood flow measurement, color Doppler ultrasound shows two-dimensional (2D) distribution of one-dimensional blood flow component along the ultrasound beam. In the present study, 2D blood flow vector is obtained with high temporal and bidirectional Doppler ultrasound technique. Linear array probe with the central frequency of 7.5 MHz and an ultrasound data acquisition system with 128 transmit and 128 receive channels were equipped. Frame rate of 5 kHz was achieved by parallel receive beam forming with a wide transmitted wave. The flow velocity was measured from two different angles by beam steering. The interval of two measurements was 0.8 msec and it was considered as almost one moment to obtain 2D blood flow vector. B-mode image and 2D blood flow vector of the pulsatile flow in a carotid artery model showed small vortex at the bifurcation area. The method was also applied for visualization of in vivo blood flow vector in human carotid arteries. 2D blood flow measurement may predict the risk area of thrombus and plaque formation induced by abnormal blood flow.
Sponsorship	IEEE Eng. Med. Biol. Soc.
Starting Page	5093
Ending Page	5096
File Size	1063388
Page Count	4
File Format	PDF
ISBN	9781424479290
ISSN	1557170X
DOI	10.1109/EMBC.2014.6944770
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-08-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Blood flow Ultrasonic imaging Vectors Carotid arteries Doppler effect Ultrasonic variables measurement Fluid flow measurement
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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