[Microwave sensor for recognition of abnormal nodule tissue on body surface]

Area of Science:

• Biomedical Engineering
• Electromagnetics
• Medical Diagnostics

Context:

• Early detection of abnormal nodular tissues on the body surface is crucial for timely medical intervention.
• Existing methods may lack precision or objectivity in identifying and locating superficial nodules.
• Microwave sensing offers a non-invasive approach for tissue characterization.

Purpose:

• To propose and validate a novel microwave sensor utilizing a spiral resonator for detecting and identifying abnormal nodular tissues.
• To simulate, optimize, fabricate, and experimentally test the performance of the developed microwave sensor.
• To establish a characteristic relationship between sensor parameters and nodule presence for accurate localization.

Summary:

• A microwave sensor with a spiral resonator was designed and simulated using HFSS software, with optimized structural parameters.
• The sensor's S21 parameters were analyzed both in simulation and experimental tests when nodules were present.
• A distinct inverted bimodal characteristic in the S21 parameter difference curve indicated the presence and precise location of nodules.

Impact:

• The developed sensor provides an objective and accurate tool for identifying and locating abnormal nodular tissues on the body surface.
• This technology has the potential to enhance diagnostic capabilities for various superficial abnormalities.
• Facilitates non-invasive, precise detection, potentially improving patient outcomes through earlier and more accurate diagnoses.