Development of a Bioimpedance Probe for Enhanced Tissue Identification in the Upper Aerodigestive Tract

Area of Science:

• Biomedical Engineering
• Oncology
• Medical Devices

Background:

• Upper Aerodigestive Tract (UADT) cancers are frequently diagnosed late, leading to poor prognoses.
• UADT cancer development involves progression through tissue layers, typically starting in the epithelium.
• Early detection through accurate tissue layer identification is crucial for improving treatment outcomes.

Purpose of the Study:

• To develop and validate a bioimpedance sensing probe for enhanced diagnosis of UADT cancers.
• To optimize electrode placement on the probe for increased differentiation between tissue layers.
• To assess the probe's potential for real-time, on-site cancer detection.

Main Methods:

• A bioimpedance sensing probe with four electrodes was designed to fit a laryngoscope's working channel.
• A novel optimization method was employed to determine electrode placement, maximizing sensitivity differences.
• Simulations were conducted to validate the probe's ability to differentiate tissue layers.

Main Results:

• The optimized probe configuration yielded 12 distinct impedance measurements.
• Simulations confirmed the probe's effectiveness in retrieving information for tissue identification.
• The design demonstrated potential for distinguishing between different tissue layers within the UADT.

Conclusions:

• The developed bioimpedance probe shows promise for early UADT cancer detection.
• Optimized electrode placement is key to enhancing diagnostic accuracy.
• This technology could enable real-time, on-site cancer identification, improving patient management.