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

Allsop, Thomas D.P.; Lloyd, Glynn; Bhamber, Ranjeet S.; Hadžievski, Ljupčo; Halliday, Michael; Webb, David J. and Bennion, Ian Cardiac-induced localized thoracic motion detected by a fiber optic sensing scheme. Journal of Biomedical Optics, 19 (11),

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.

Publication DOI: https://doi.org/10.1117/1.JBO.19.11.117006
Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Engineering & Applied Sciences > Institute of Photonics
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Additional Information: 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
Uncontrolled Keywords: cardio measurement,curvature sensing,long period gratings,Biomedical Engineering,Biomaterials,Electronic, Optical and Magnetic Materials,Atomic and Molecular Physics, and Optics,Medicine(all)

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