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Authors: Fatma Ayari 1 ; Ali Alouani 2 and Mekki Ksouri 1

Affiliations: 1 University of Tunis El Manar, Tunisia ; 2 Tennessee Technological University, United States

Keyword(s): Passive Time Delay, Chronic Obstruction, Lung Sounds, Lung Signal Analysis, Multichannel.

Related Ontology Subjects/Areas/Topics: Biometrics and Pattern Recognition ; Multidimensional Signal Processing ; Multimedia ; Multimedia Signal Processing ; Multimodal Signal Processing ; Sensors and Multimedia ; Telecommunications

Abstract: We are dealing with Chronic Obstructive Pulmonary Disease (COPD), using a new methodology based on Passive Time Delay Technique (PTDT). Lung sounds were recorded using a multichannel stethoscope on 28 healthy subjects and 20 COPD patients. The sensors were distributed on the posterior and anterior chest wall. During recordings, all participants were breathing at matching airflow rates. Calculated time delay (TD) was identified for inspiration phase and an average TD value was provided after three repetitive measurements for each inspiration phase. TD computed in COPD patients: 440 ± 87 % (P < 0.05) was remarkably greater than time delay computed with normal subjects: 160 ± 10 % (P < 0.05). Results were presented as mean ± SD, standard deviation of time delay in ms. Significant P values (P < 0.05) were indicated using Wilcoxon test. Preliminary results are very encouraging to develop this technique and enhance COPD monitoring.

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Paper citation in several formats:
Ayari, F.; Alouani, A. and Ksouri, M. (2015). A Time Delay based Approach to Enhance Lung Diseases Diagnostic. In Proceedings of the 12th International Conference on Signal Processing and Multimedia Applications (ICETE 2015) - SIGMAP; ISBN 978-989-758-118-2, SciTePress, pages 49-54. DOI: 10.5220/0005546100490054

@conference{sigmap15,
author={Fatma Ayari. and Ali Alouani. and Mekki Ksouri.},
title={A Time Delay based Approach to Enhance Lung Diseases Diagnostic},
booktitle={Proceedings of the 12th International Conference on Signal Processing and Multimedia Applications (ICETE 2015) - SIGMAP},
year={2015},
pages={49-54},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005546100490054},
isbn={978-989-758-118-2},
}

TY - CONF

JO - Proceedings of the 12th International Conference on Signal Processing and Multimedia Applications (ICETE 2015) - SIGMAP
TI - A Time Delay based Approach to Enhance Lung Diseases Diagnostic
SN - 978-989-758-118-2
AU - Ayari, F.
AU - Alouani, A.
AU - Ksouri, M.
PY - 2015
SP - 49
EP - 54
DO - 10.5220/0005546100490054
PB - SciTePress