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Detection Capability Enhanced Biosensor Antenna for Portable Electromagnetic Stroke Diagnostic Systems.

Hui Chen, Kwai-Man Luk

    IEEE Transactions on Biomedical Circuits and Systems
    |September 11, 2023
    PubMed
    Summary

    This study introduces an enhanced biosensor antenna for portable electromagnetic (EM) stroke detection. The novel design improves early stroke diagnosis by enabling the detection of smaller affected areas.

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    Area of Science:

    • Biomedical Engineering
    • Electromagnetics
    • Medical Diagnostics

    Background:

    • Portable electromagnetic (EM) systems are crucial for early stroke detection and patient monitoring.
    • Biosensor antennas are key hardware components in these EM diagnostic systems.
    • Existing designs face limitations in detection capability for stroke diagnosis.

    Purpose of the Study:

    • To present a detect capability-enhanced biosensor antenna for portable EM stroke detection systems.
    • To overcome the limited detection capability of current designs.
    • To improve early on-site stroke detection and long-term monitoring.

    Main Methods:

    • Development of a compact, planar biosensor antenna based on multiple dipoles.
    • Utilizing multi-mode resonances and complementary interaction for enhanced performance.
    • Simulation and measurement using head phantoms and a 12-element antenna array.

    Main Results:

    • The proposed antenna shows improved impedance bandwidth and near-field radiation within head tissues.
    • Successful detection of stroke-affected areas as small as 3 mm in radius was achieved.
    • Enhanced stroke detection capability was validated in a lab-setting EM stroke diagnostic system.

    Conclusions:

    • The developed compact planar biosensor antenna significantly enhances stroke detection capability.
    • This advancement is critical for improving radar-based EM diagnosis of stroke.
    • The antenna design offers a promising solution for portable and effective stroke diagnostic systems.