NDLI: Dual gate pulsed wave Doppler imaging for investigating cardiovascular dysfunctions

Content Provider	IEEE Xplore Digital Library
Author	Bong Jin Kang Jinhyoung Park Hyung Ham Kim Yen, J.T. Shung, K.K.
Copyright Year	2012
Description	Author affiliation: Dept. of Biomed. Eng., Univ. of Southern California, Los Angeles, CA, USA (Bong Jin Kang; Jinhyoung Park; Hyung Ham Kim; Yen, J.T.; Shung, K.K.)
Abstract	Ultrasound Doppler imaging is frequently performed in a clinical and research environment to assess cardiovascular functions. Blood flow and tissue motion velocities can be measured employing pulsed-wave flow and tissue Doppler imaging respectively. Conventionally, flow and tissue Doppler are acquired separately in different cardiac cycles and synchronized using an electrocardiogram signal as a reference. Dual gate pulsed wave Doppler imaging, which utilizes two separate gates for flow and tissue Doppler, has been implemented by interleaving tissue Doppler to flow Doppler imaging sequences to measure the velocity of flow and tissue motions simultaneously. The proposed approach was implemented on the high-frequency ultrasound imaging system operating a 28 MHz 256-element linear array transducer. Micro-flow phantom having a polyimide tube with a diameter of 510μm was fabricated. The array-based Doppler system was evaluated by measuring constant flow velocities (30, 40, 50 and 80 mm/s) in the micro-flow phantom using a single-gate Doppler, and then dual-gate Doppler was evaluated by measuring the velocity of flow and wall motions. In the micro-flow phantom experiment using dual-gate Doppler imaging, while flow velocity in the tube is changing from 0 to 70 mm/s, the wall motions of either contraction or relaxation could be identified in tissue Doppler imaging.
Starting Page	1600
Ending Page	1602
File Size	532917
Page Count	3
File Format	PDF
ISBN	9781467345613
ISSN	19485719
e-ISBN	9781467345620
DOI	10.1109/ULTSYM.2012.0400
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-07
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Doppler effect Imaging Logic gates Ultrasonic imaging Fluid flow measurement Arrays Velocity measurement Cardiovascular Dual-gate Doppler High Frequency Ultrasound
Content Type	Text
Resource Type	Article

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