Toward Non-Invasive Core Body Temperature Sensing.

Area of Science:

• Biomedical Engineering
• Electromagnetics
• Medical Physics

Background:

• Accurate core body temperature monitoring is crucial for clinical management.
• Existing methods for core temperature measurement have limitations in accuracy, invasiveness, or continuous monitoring.
• Understanding electromagnetic wave interaction with biological tissues is key for developing novel sensing modalities.

Purpose of the Study:

• To investigate a novel radiometry technique for non-invasive core temperature monitoring.
• To evaluate the feasibility of using bio-matched antennas (BMAs) and broadband measurements.
• To adapt radiative transfer models for layered biological tissues.

Main Methods:

• Utilized bio-matched antennas (BMAs) for electromagnetic wave transmission and reception.
• Performed broadband measurements to capture frequency-dependent tissue properties.
• Adapted radiative transfer models, originally developed for geophysical media, for layered biological tissues.
• Employed forward modeling to simulate temperature distributions based on electromagnetic properties.

Main Results:

• Preliminary modeling results demonstrated the theoretical feasibility of the approach.
• Initial experimental data supported the potential for accurate temperature estimation.
• The study confirmed that electromagnetic wave penetration depth is frequency-dependent and influenced by tissue dielectric properties.

Conclusions:

• The novel radiometry technique shows promise for non-invasive and accurate core temperature monitoring.
• Adaptation of geophysical modeling techniques is effective for biological applications.
• Further research and validation are warranted to translate this technique into clinical practice.