Changes in non-invasive wave intensity parameters with variations of Savitzky-Golay filter settings

Pomella, Nicola and Rakobowchuk, Mark and Kolyva, Christina and Khir, Ashraf W. (2016) Changes in non-invasive wave intensity parameters with variations of Savitzky-Golay filter settings. In: 43rd Computing in Cardiology Conference, 11-14 Sept 2016, Vancouver, Canada.

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Abstract

Ultrasound-measured waveforms, such as vessel diameter and blood flow velocity, are used to perform analysis of waves in the cardiovascular system. Wave intensity analysis is one of the tools used for this purpose. The waveforms are commonly filtered to eliminate high-frequency noise, however the filter settings affect the features of these signals and especially of their time derivatives, upon which wave intensity analysis is based. This study aims to investigate the alterations of wave intensity parameters with varying Savitzky-Golay filter settings, one of the most common smoothing algorithms used in this context. A broad spectrum of variations was observed in all the wave intensity variables. It is therefore important to always specify the filter settings applied to the signals in a wave intensity study, so that appropriate comparisons can be made

Item Type: Conference or Workshop Item (Paper)
Additional Information: Published as: N. Pomella, M. Rakobowchuk, C. Kolyva and A. W. Khir, "Changes in non-invasive wave intensity parameters with variations of Savitzky-Golay filter settings," 2016 Computing in Cardiology Conference (CinC), Vancouver, BC, 2016 (in Computing in Cardiology 2016 Volume 43)
Research Areas: A. > School of Science and Technology > Natural Sciences > Biophysics and Bioengineering group
Item ID: 24090
Notes on copyright: Computing in Cardiology 2016. Published by Computing in Cardiology, 2016. http://www.cinc.org/ Articles in this volume are copyright (C) 2016 by their respective authors, and are licensed by their authors under the Creative Commons Attribution License 2.5 (CCAL). For the full text of the CCAL, please visit: http://creativecommons.org/licenses/by/2.5/
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Depositing User: Christina Kolyva
Date Deposited: 05 Apr 2018 16:01
Last Modified: 08 Nov 2018 03:51
URI: http://eprints.mdx.ac.uk/id/eprint/24090

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