NDLI: High-frequency ultrasound Doppler detection using fundamental pulse inversion technique

Content Provider	IEEE Xplore Digital Library
Author	Wei-Chen Liu Shen, Che-Chou
Copyright Year	2014
Description	Author affiliation: Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan (Wei-Chen Liu; Shen, Che-Chou)
Abstract	Swept-scan imaging mode is often utilized in high-frequency ultrasound Doppler estimation of blood flow. However, tissue spectral broadening effect in swept-scan system severely limits the detection of low-velocity flow especially at high scanning speed of motor. To alleviate the effect of wall filtering on low-velocity blood signal, the suppression of tissue Doppler signal using micro-bubble contrast agent and non-linear imaging can be helpful. With the method of fundamental pulse-inversion Doppler (FPID), the non-linear bubble signal can be isolated from the linear tissue signal at fundamental frequency by low-pass filtering in the Doppler domain to reduce the clutter interference. Results show that the FPID helps to retain the low-velocity blood flow signal in color Doppler imaging and thus improves the efficacy of blood flow detection. With different lateral scanning speed of motor (Vmotor), the values of color-pixel density (CPD) with FPID are 0.63 (Vmotor = 4mm/s), 0.65 (Vmotor = 8mm/s) and 0.58 (Vmotor = 16mm/s). It shows that FPID is less susceptible to the tissue spectral broadening effect The results also show that, with FPID method, the flow signal-to-clutter ratio (SCR) increases by 7.7dB (P < 0.001) and the CPD increases by 20 % (P < 0.001) in the case of 3mm/s of blood flow velocity and 16mm/s lateral scanning speed of motor.
Starting Page	1
Ending Page	4
File Size	1131231
Page Count	4
File Format	PDF
ISBN	9781479968015
DOI	10.1109/BMEiCON.2014.7017386
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-11-26
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Thyristors Image resolution Swept-scan mode Tissue spectral broadening Micro-bubble contrast agent Acoustics Clutter Artificial intelligence Blood Signal resolution Pulse inversion High-frequency ultrasound Doppler estimation
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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