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

Research output: Contribution to journalArticle

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 languageEnglish
Number of pages10
JournalJournal of Biomedical Optics
Volume19
Issue number11
DOIs
Publication statusPublished - 13 Nov 2014

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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

Cite this

Allsop, T. D. P., Lloyd, G., Bhamber, R. S., Hadžievski, L., Halliday, M., Webb, D. J., & Bennion, I. (2014). Cardiac-induced localized thoracic motion detected by a fiber optic sensing scheme. Journal of Biomedical Optics, 19(11). https://doi.org/10.1117/1.JBO.19.11.117006