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Optical-based artificial palpation sensors for lesion characterization.

Jong-Ha Lee1, Yoon Nyun Kim, Jeonghun Ku

  • 1Department of Biomedical Engineering, School of Medicine, Keimyung University, Dalgubeol-daero, Daegu 704-701, Korea. segeberg@kmu.ac.kr

Sensors (Basel, Switzerland)
|August 23, 2013
PubMed
Summary

This study introduces an optical-based artificial palpation sensor for detecting breast lesions. The novel sensor uses light scattering within an optical waveguide to characterize lumps, offering a more objective measurement than manual palpation.

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Area of Science:

  • Biomedical Engineering
  • Optical Sensing
  • Medical Diagnostics

Background:

  • Manual palpation for breast lump detection is subjective and relies heavily on physician skill.
  • There is a need for objective, quantitative methods to assess soft tissue properties and detect lesions.
  • Developing advanced medical sensors can improve the accuracy and consistency of palpation-based diagnostics.

Purpose of the Study:

  • To propose and develop an optical-based artificial palpation sensor for objective lesion characterization.
  • To utilize a multilayer polydimethylsiloxane optical waveguide for light manipulation and scattering.
  • To quantitatively assess the size, depth, and Young's modulus of inclusions in soft tissues.

Main Methods:

  • A multilayer polydimethylsiloxane optical waveguide was fabricated.

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  • Light was introduced at a critical angle for total internal reflection within the waveguide.
  • External compression deformed the waveguide, causing light scattering, which was captured by a high-resolution camera.
  • A realistic tissue phantom with embedded hard inclusions was used for system testing.

    • Main Results:

    • The proposed optical palpation sensor successfully detected embedded inclusions within the tissue phantom.
    • The system provided relative measurements for the size and depth of the detected inclusions.
    • The sensor also yielded relative values for the Young's modulus of the inclusions, indicating mechanical property assessment.

    Conclusions:

    • The developed optical-based artificial palpation sensor offers a promising, objective approach for lesion characterization in soft tissues.
    • This technology has the potential to enhance the diagnostic capabilities currently reliant on subjective manual palpation.
    • Further research and development could lead to more efficient and accurate medical sensors for breast cancer detection and assessment.