Harput, S orcid.org/0000-0003-0491-4064, McLaughlan, J, Cowell, DMJ orcid.org/0000-0003-0854-542X et al. (1 more author) (2015) Contrast-Enhanced Ultrasound Imaging with Chirps: Signal Processing and Pulse Compression. In: 2015 IEEE International Ultrasonics Symposium (IUS). , 21-24 Oct 2015, Taipei, Taiwan. IEEE ISBN 978-1-4799-8182-3
Abstract
Contrast-enhanced ultrasound imaging creates one of the worst case scenarios for pulse compression due to depth and frequency dependent attenuation, high level of harmonic generation, phase variations due to resonance behavior of microbubbles, and increased broadband noise by microbubble destruction. This study investigates the feasibility of pulse compression with a matched filter in the existence of microbubbles with resonant behavior. Simulations and experimental measurements showed that the scattered pressure from a microbubble population excited by a chirp waveform preserves its chirp rate even for harmonic frequencies. Although, pulse compression by a matched filter was possible due to the conservation of the chirp rate, an increase on sidelobe levels were observed at fundamental and second harmonic frequencies. Therefore, using chirp excitation and a matched filter pair will increase the contrast-to-tissue ratio with a trade-off of decreased image quality.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2015, IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. |
Keywords: | Microbubbles; chirp coded excitation; linear frequency modulation; pulse compression; matched filter |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Institute of Communication & Power Networks (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 20 Jul 2016 14:25 |
Last Modified: | 24 Jan 2018 11:49 |
Published Version: | http://doi.org/10.1109/ULTSYM.2015.0160 |
Status: | Published |
Publisher: | IEEE |
Identification Number: | 10.1109/ULTSYM.2015.0160 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:101039 |