Cardiac-induced localized thoracic motion detected by a fiber optic sensing scheme

Thomas D.P. Allsop; Glynn Lloyd; Ranjeet S. Bhamber; Ljupčo Hadžievski; Michael Halliday; David J. Webb; Ian Bennion

doi:10.1117/1.JBO.19.11.117006

Cardiac-induced localized thoracic motion detected by a fiber optic sensing scheme

Thomas D.P. Allsop^*, Glynn Lloyd, Ranjeet S. Bhamber, Ljupčo Hadžievski, Michael Halliday, David J. Webb, Ian Bennion

^*Corresponding author for this work

Aston Institute of Photonic Technologies (AiPT)

Research output: Contribution to journal › Article › peer-review

Abstract

The cardiovascular health of the human population is a major concern for medical clinicians, with cardiovascular diseases responsible for 48% of all deaths worldwide, according to the World Health Organization. The development of new diagnostic tools that are practicable and economical to scrutinize the cardiovascular health of humans is a major driver for clinicians. We offer a new technique to obtain seismocardiographic signals up to 54 Hz covering both ballistocardiography (below 20 Hz) and audible heart sounds (20 Hz upward), using a system based on curvature sensors formed from fiber optic long period gratings. This system can visualize the real-time three-dimensional (3-D) mechanical motion of the heart by using the data from the sensing array in conjunction with a bespoke 3-D shape reconstruction algorithm. Visualization is demonstrated by adhering three to four sensors on the outside of the thorax and in close proximity to the apex of the heart; the sensing scheme revealed a complex motion of the heart wall next to the apex region of the heart. The detection scheme is low-cost, portable, easily operated and has the potential for ambulatory applications.

Original language	English
Article number	117006
Number of pages	10
Journal	Journal of Biomedical Optics
Volume	19
Issue number	11
DOIs	https://doi.org/10.1117/1.JBO.19.11.117006
Publication status	Published - 13 Nov 2014

Bibliographical note

Thomas Allsop ; Glynn Lloyd ; Ranjeet S. Bhamber ; Ljupco Hadzievski ; Michael Halliday, et al., "Cardiac-induced localized thoracic motion detected by a fiber optic sensing scheme", J. Biomed. Opt. 19(11), 117006 (Nov 13, 2014).

Copyright 2014 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

DOI: http://dx.doi.org/10.1117/1.JBO.19.11.117006

Funding: Grant No. EP/J010413 UK Engineering and Physical Sciences Research Council

Keywords

cardio measurement
curvature sensing
long period gratings

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10.1117/1.JBO.19.11.117006

Cardiac-induced localized thoracic motion detected by a fiber optic sensing scheme
Thomas Allsop ; Glynn Lloyd ; Ranjeet S. Bhamber ; Ljupco Hadzievski ; Michael Halliday, et al., "Cardiac-induced localized thoracic motion detected by a fiber optic sensing scheme", J. Biomed. Opt. 19(11), 117006 (Nov 13, 2014). Copyright 2014 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. DOI: http://dx.doi.org/10.1117/1.JBO.19.11.117006
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title = "Cardiac-induced localized thoracic motion detected by a fiber optic sensing scheme",

abstract = "The cardiovascular health of the human population is a major concern for medical clinicians, with cardiovascular diseases responsible for 48% of all deaths worldwide, according to the World Health Organization. The development of new diagnostic tools that are practicable and economical to scrutinize the cardiovascular health of humans is a major driver for clinicians. We offer a new technique to obtain seismocardiographic signals up to 54 Hz covering both ballistocardiography (below 20 Hz) and audible heart sounds (20 Hz upward), using a system based on curvature sensors formed from fiber optic long period gratings. This system can visualize the real-time three-dimensional (3-D) mechanical motion of the heart by using the data from the sensing array in conjunction with a bespoke 3-D shape reconstruction algorithm. Visualization is demonstrated by adhering three to four sensors on the outside of the thorax and in close proximity to the apex of the heart; the sensing scheme revealed a complex motion of the heart wall next to the apex region of the heart. The detection scheme is low-cost, portable, easily operated and has the potential for ambulatory applications.",

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AU - Halliday, Michael

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Cardiac-induced localized thoracic motion detected by a fiber optic sensing scheme

Abstract

Bibliographical note

Keywords

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