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A Fiber Bragg Grating Sensor for Radial Artery Pulse Waveform Measurement
IEEE Transactions on Bio-Medical Engineering
|July 7, 2017
Summary
A novel optical sensor using fiber Bragg grating (FBG) and lever amplification accurately measures radial artery pulse waveforms. This high-sensitivity system offers improved clinical diagnosis for cardiovascular diseases.
Area of Science:
- Biomedical Engineering
- Optical Sensing Technologies
- Cardiovascular Diagnostics
Background:
- Pulse waveform analysis is crucial for clinical examination and diagnosing cardiovascular diseases.
- High-fidelity radial artery pulse waveforms are vital for estimating central aortic pressure, a predictor of cardiovascular risk.
- Optimal pulse waveform acquisition requires examination from multiple locations due to the radial artery's cylindrical nature.
Purpose of the Study:
- To design and experimentally validate a novel optical sensor for multilocation radial artery pulse waveform measurement.
- To leverage fiber Bragg grating (FBG) and a lever amplification mechanism for enhanced sensitivity and electromagnetic interference immunity.
- To assess the feasibility of optical sensing for physiological measurements in clinical applications.
Main Methods:
- Development of an optical sensing system integrating a fiber Bragg grating (FBG) sensor with a lever amplification mechanism.
- Characterization of the FBG sensor's sensitivity, achieving 8.236 nm/N, comparable to electrical sensors.
- Experimental validation of the sensor's performance by measuring radial artery pulse waveforms at various positions and depths, guided by physicians.
Main Results:
- The FBG-based optical sensor demonstrated high sensitivity and immunity to electromagnetic interference.
- The system provided accurate radial artery pulse waveform measurements, enabling extraction of key characteristic parameters.
- Experimental validation confirmed the sensor's effectiveness in capturing pulse waveforms at different locations and depths.
Conclusions:
- The developed optical sensing system is highly feasible for physiological measurements.
- The FBG sensor offers a promising tool for accurate radial artery pulse waveform measurement in clinical settings.
- This technology supports advanced diagnostics for cardiovascular diseases through precise pulse analysis.
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