Research Papers: Sensing

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

[+] Author Affiliations
Thomas Allsop, David J. Webb, Ian Bennion

Aston University, Aston Institute of Photonic Technologies, School of Engineering and Applied Science, Aston Triangle, Birmingham B4 7ET, United Kingdom

Glynn Lloyd

Moog Insensys Ltd., Ocean House, Whittle Avenue, Segensworth West, Fareham PO15 5SX, United Kingdom

Ranjeet S. Bhamber

University of Manchester, Centre for Endocrinology and Diabetes, Institute of Human Development, Faculty of Medical and Human Sciences, AV Hill Building, Oxford Road, Manchester, United Kingdom

Centre for Advanced Discovery and Experimental Therapeutics (CADET), Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, Oxford Road, Manchester, United Kingdom

Ljupco Hadzievski

Vinča Institute of Nuclear Sciences, Atomic Physics Department, P.O. Box 522, 11001 Belgrade, Republic of Serbia

Michael Halliday

Cytec Process Materials (Keighley) Ltd., 500 Bradford Road, Keighley West, Yorkshire BD20 5NG, United Kingdom

J. Biomed. Opt. 19(11), 117006 (Nov 13, 2014). doi:10.1117/1.JBO.19.11.117006
History: Received April 10, 2014; Accepted October 22, 2014
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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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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

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). ; http://dx.doi.org/10.1117/1.JBO.19.11.117006


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