Simulation of effect of mechanical loading on dynamics of breast tissue optical properties

Alexander Dyachenko; John Gardner; Ivan V. Masyukov; Alan Rego; Vladimir Zlatov

doi:10.1117/12.518861

13 October 2003 Simulation of effect of mechanical loading on dynamics of breast tissue optical properties

Alexander Dyachenko, John Gardner, Ivan V. Masyukov, Alan Rego, Vladimir Zlatov

Proceedings Volume 5068, Saratov Fall Meeting 2002: Optical Technologies in Biophysics and Medicine IV; (2003) https://doi.org/10.1117/12.518861
Event: Saratov Fall Meeting 2002 Laser Physics and Photonics, Spectroscopy, and Molecular Modeling III; Coherent Optics of Ordered and Random Media III, 2002, Saratov, Russian Federation

Abstract

Considering enhanced angiogenesis in malignant tissues we propose in a new functional imaging technique. If proven in clinical trial, the technique may be useful for differentiating malignant tumors with enhanced vascularity from normal tissues and benign lesions. The technique is based on observing the dynamics of light attenuation in the breast tissue in response to an external pressure stimulus. The attenuation is related to blood flow and blood oxygenation. In the proposed technique the measurements are made in the red spectral wavelength region where hemoglobin serves as a natural contrast agent. In order to understand and interpret the temporal dynamic of attenuation or signatures, a model of blood circulation in zones of tumor and normal tissues is developed. The blood volume, blood flow, and oxygen saturation level are evaluated using a lumped fluid flow model incorporating published hemodynamics data obtained from biopsy samples or in-situ chamber growth of human tumor. The hemodynamics properties are translated into normal tissues. The results suggest that the differences in the transient response may be used as a secondary diagnostic tool in breast imaging or as a monitoring tool in anti-angiogenesis drug therapy.

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Alexander Dyachenko, John Gardner, Ivan V. Masyukov, Alan Rego, and Vladimir Zlatov "Simulation of effect of mechanical loading on dynamics of breast tissue optical properties", Proc. SPIE 5068, Saratov Fall Meeting 2002: Optical Technologies in Biophysics and Medicine IV, (13 October 2003); https://doi.org/10.1117/12.518861

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KEYWORDS

Tissues

Tumors

Blood

Tissue optics

Absorption

Breast

Blood circulation

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