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Related Experiment Video

Updated: May 18, 2026

Wideband Optical Detector of Ultrasound for Medical Imaging Applications
08:21

Wideband Optical Detector of Ultrasound for Medical Imaging Applications

Published on: May 11, 2014

Optical in-fiber bragg grating sensor systems for medical applications.

Y J Rao, D J Webb, D A Jackson

    Journal of Biomedical Optics
    |September 28, 2012
    PubMed
    Summary
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    Two novel fiber Bragg grating (FBG) temperature sensors show promise for medical applications, including cardiac monitoring and in vivo temperature profiling in nuclear magnetic resonance (NMR) machines. These FBG sensors demonstrate good agreement with traditional electrical sensors.

    Area of Science:

    • Biomedical Engineering
    • Optical Sensing Technologies
    • Medical Device Development

    Background:

    • Accurate temperature monitoring is critical in various medical applications, including cardiac output measurement and in vivo imaging.
    • Traditional electrical temperature sensors have limitations in certain medical environments.
    • Fiber Bragg Gratings (FBGs) offer potential advantages as temperature sensors due to their small size, immunity to electromagnetic interference, and multiplexing capabilities.

    Purpose of the Study:

    • To demonstrate two distinct in-fiber Bragg grating (FBG) temperature sensor systems designed for medical applications.
    • To evaluate the performance of these FBG sensors against established electrical sensors.
    • To assess the suitability of FBG sensor technology for specific medical procedures like cardiac monitoring and NMR imaging.

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    A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
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    Published on: September 30, 2019

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    Last Updated: May 18, 2026

    Wideband Optical Detector of Ultrasound for Medical Imaging Applications
    08:21

    Wideband Optical Detector of Ultrasound for Medical Imaging Applications

    Published on: May 11, 2014

    A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
    08:23

    A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

    Published on: September 30, 2019

    Main Methods:

    • Development of an FBG flow-directed thermodilution catheter utilizing interferometric detection of wavelength shift for cardiac monitoring.
    • Implementation of an FBG sensor system incorporating a tunable Fabry-Perot filter for in vivo temperature profiling within Nuclear Magnetic Resonance (NMR) machines.
    • Comparison of FBG sensor readings with those from conventional electrical temperature sensors.

    Main Results:

    • The FBG-based thermodilution catheter demonstrated effective wavelength shift detection for cardiac monitoring.
    • The FBG sensor system with a tunable Fabry-Perot filter provided accurate in vivo temperature profiling in NMR environments.
    • Preliminary results indicated good agreement between the FBG sensors and widely used electrical sensors.
    • Field tests confirmed the FBG sensor system's suitability for in situ temperature monitoring in NMR machines.

    Conclusions:

    • Fiber Bragg grating (FBG) technology is a viable and accurate method for temperature sensing in demanding medical applications.
    • The developed FBG sensor systems offer a promising alternative to traditional electrical sensors for cardiac monitoring and NMR temperature profiling.
    • FBG sensors are suitable for in situ temperature measurements in medical imaging and monitoring devices.