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

Thomas Allsop; Glynn Lloyd; Ranjeet S. Bhamber; Ljupco Hadzievski; Michael Halliday; David J. Webb; Ian Bennion

doi:10.1117/1.JBO.19.11.117006

13 November 2014 Cardiac-induced localized thoracic motion detected by a fiber optic sensing scheme

Thomas Allsop; Glynn Lloyd; Ranjeet S. Bhamber; Ljupco Hadzievski; Michael Halliday; David J. Webb; Ian Bennion

Author Affiliations +

J. of Biomedical Optics, 19(11), 117006 (2014). https://doi.org/10.1117/1.JBO.19.11.117006

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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Thomas Allsop, Thomas Allsop, Glynn Lloyd, Glynn Lloyd, Ranjeet S. Bhamber, Ranjeet S. Bhamber, Ljupco Hadzievski, Ljupco Hadzievski, Michael Halliday, Michael Halliday, David J. Webb, David J. Webb, Ian Bennion, Ian Bennion, } "Cardiac-induced localized thoracic motion detected by a fiber optic sensing scheme," Journal of Biomedical Optics 19(11), 117006 (13 November 2014). https://doi.org/10.1117/1.JBO.19.11.117006 . Submission:

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