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Related Experiment Videos

Multi-wavelength time domain optical mammography.

P Taroni1, L Spinelli, A Torricelli

  • 1CNR-INFM and CNR-IFN, Politecnico di Milano--Dipartimento di Fisica, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy. paola.taroni@fisi.polimi.it

Technology in Cancer Research & Treatment
|September 22, 2005
PubMed
Summary

This study introduces an advanced optical mammograph with 7 wavelengths for improved breast lesion detection. The enhanced instrument aids in identifying cancers and characterizing benign cysts through absorption and scattering imaging.

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Area of Science:

  • Biomedical Optics
  • Medical Imaging
  • Cancer Diagnostics

Background:

  • Optical mammography utilizes light to image breast tissue, offering a non-ionizing alternative to X-rays.
  • Previous systems with fewer wavelengths had limitations in accurately characterizing tissue composition and detecting lesions.
  • Advancements in instrumentation are crucial for improving diagnostic accuracy in breast cancer screening.

Purpose of the Study:

  • To develop and clinically apply a time-resolved optical mammograph with an expanded 7-wavelength capability.
  • To enhance the detection and characterization of malignant and benign breast lesions.
  • To improve the estimation of tissue composition, structure, and physiological parameters using advanced optical imaging.

Main Methods:

  • Development of a time-resolved optical mammograph operating at 7 specific wavelengths (637-975 nm).

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  • Clinical application on patients with malignant and benign breast lesions.
  • Analysis of late-gated intensity images for absorption properties and scattering images derived from diffusion theory for lesion characterization.

    • Main Results:

    • Intensity images at short wavelengths identified cancers due to high blood content.
    • Cysts were characterized by low scattering across all wavelengths.
    • The increased number of wavelengths improved fitting procedures for better tissue parameter estimation.

    Conclusions:

    • The 7-wavelength optical mammograph enhances lesion detection and characterization in breast tissue.
    • Improved tissue composition and physiological parameter estimation are achieved with the expanded wavelength range.
    • This advanced optical imaging technique shows promise for assisting in breast cancer diagnosis.