Automatic identification of systolic time intervals in seismocardiogram

Continuous and non-invasive monitoring of hemodynamic parameters through unobtrusive wearable sensors can potentially aid in early detection of cardiac abnormalities, and provides a viable solution for long-term follow-up of patients with chronic cardiovascular diseases without disrupting the daily...

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Main Authors: Shafiq, Ghufran, Tatinati, Sivanagaraja, Ang, Wei Tech, Veluvolu, Kalyana C.
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2018
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Online Access:https://hdl.handle.net/10356/100444
http://hdl.handle.net/10220/46512
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1004442023-03-04T17:14:42Z Automatic identification of systolic time intervals in seismocardiogram Shafiq, Ghufran Tatinati, Sivanagaraja Ang, Wei Tech Veluvolu, Kalyana C. School of Mechanical and Aerospace Engineering Cardiovascular Diseases Electrocardiography DRNTU::Engineering::Mechanical engineering Continuous and non-invasive monitoring of hemodynamic parameters through unobtrusive wearable sensors can potentially aid in early detection of cardiac abnormalities, and provides a viable solution for long-term follow-up of patients with chronic cardiovascular diseases without disrupting the daily life activities. Electrocardiogram (ECG) and siesmocardiogram (SCG) signals can be readily acquired from light-weight electrodes and accelerometers respectively, which can be employed to derive systolic time intervals (STI). For this purpose, automated and accurate annotation of the relevant peaks in these signals is required, which is challenging due to the inter-subject morphological variability and noise prone nature of SCG signal. In this paper, an approach is proposed to automatically annotate the desired peaks in SCG signal that are related to STI by utilizing the information of peak detected in the sliding template to narrow-down the search for the desired peak in actual SCG signal. Experimental validation of this approach performed in conventional/controlled supine and realistic/challenging seated conditions, containing over 5600 heart beat cycles shows good performance and robustness of the proposed approach in noisy conditions. Automated measurement of STI in wearable configuration can provide a quantified cardiac health index for long-term monitoring of patients, elderly people at risk and health-enthusiasts. Published version 2018-11-01T05:03:01Z 2019-12-06T20:22:41Z 2018-11-01T05:03:01Z 2019-12-06T20:22:41Z 2016 Journal Article Shafiq, G., Tatinati, S., Ang, W. T., & Veluvolu, K. C. (2016). Automatic identification of systolic time intervals in seismocardiogram. Scientific Reports, 6, 37524-. doi:10.1038/srep37524 https://hdl.handle.net/10356/100444 http://hdl.handle.net/10220/46512 10.1038/srep37524 en Scientific Reports © 2016 The Authors (Nature Publishing Group). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ 11 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Cardiovascular Diseases
Electrocardiography
DRNTU::Engineering::Mechanical engineering
spellingShingle Cardiovascular Diseases
Electrocardiography
DRNTU::Engineering::Mechanical engineering
Shafiq, Ghufran
Tatinati, Sivanagaraja
Ang, Wei Tech
Veluvolu, Kalyana C.
Automatic identification of systolic time intervals in seismocardiogram
description Continuous and non-invasive monitoring of hemodynamic parameters through unobtrusive wearable sensors can potentially aid in early detection of cardiac abnormalities, and provides a viable solution for long-term follow-up of patients with chronic cardiovascular diseases without disrupting the daily life activities. Electrocardiogram (ECG) and siesmocardiogram (SCG) signals can be readily acquired from light-weight electrodes and accelerometers respectively, which can be employed to derive systolic time intervals (STI). For this purpose, automated and accurate annotation of the relevant peaks in these signals is required, which is challenging due to the inter-subject morphological variability and noise prone nature of SCG signal. In this paper, an approach is proposed to automatically annotate the desired peaks in SCG signal that are related to STI by utilizing the information of peak detected in the sliding template to narrow-down the search for the desired peak in actual SCG signal. Experimental validation of this approach performed in conventional/controlled supine and realistic/challenging seated conditions, containing over 5600 heart beat cycles shows good performance and robustness of the proposed approach in noisy conditions. Automated measurement of STI in wearable configuration can provide a quantified cardiac health index for long-term monitoring of patients, elderly people at risk and health-enthusiasts.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Shafiq, Ghufran
Tatinati, Sivanagaraja
Ang, Wei Tech
Veluvolu, Kalyana C.
format Article
author Shafiq, Ghufran
Tatinati, Sivanagaraja
Ang, Wei Tech
Veluvolu, Kalyana C.
author_sort Shafiq, Ghufran
title Automatic identification of systolic time intervals in seismocardiogram
title_short Automatic identification of systolic time intervals in seismocardiogram
title_full Automatic identification of systolic time intervals in seismocardiogram
title_fullStr Automatic identification of systolic time intervals in seismocardiogram
title_full_unstemmed Automatic identification of systolic time intervals in seismocardiogram
title_sort automatic identification of systolic time intervals in seismocardiogram
publishDate 2018
url https://hdl.handle.net/10356/100444
http://hdl.handle.net/10220/46512
_version_ 1759856839890042880