Harput, S, Arif, M and Freear, S (2010) Experimental investigation of the subharmonic emission from microbubbles using linear and nonlinear frequency modulated signals. In: Proceedings - IEEE Ultrasonics Symposium. IEEE , 1724 - 1727. ISBN 978-1-4577-0382-9
Abstract
In medical ultrasound imaging, coded excitation is widely used to increase signal to noise ratio (SNR) and penetration without increasing the peak pressure level by using longer pulse durations. The aim of this work is to utilize chirp coded excitation and investigate the effect on subharmonic emission from contrast agents for nondestructive subharmonic imaging. The subharmonic emission of the microbubbles is measured as a function of pressure and bandwidth for linear frequency modulated (LFM) and nonlinear frequency modulated (NLFM) signals. Results indicate that for both excitation schemes, narrowband signals produced higher subharmonic level. It is also observed that for wide-band signals, NLFM excitation generated the highest subharmonic level.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2010, IEEE. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | biomedical ultrasonics; bubbles; chirp modulation; frequency modulation; ultrasonic imaging |
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: | 26 Jul 2013 10:57 |
Last Modified: | 20 Oct 2017 05:59 |
Published Version: | http://dx.doi.org/10.1109/ULTSYM.2010.5935909 |
Status: | Published |
Publisher: | IEEE |
Identification Number: | 10.1109/ULTSYM.2010.5935909 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:75991 |