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Differentiation of cysts from solid tumors in the breast with diffuse optical tomography
Xuejun Gu1, Qizhi Zhang, Matthew Bartlett
1Department of Physics and Astronomy, Clemson University, Clemson, SC 29634-0978, USA.
Academic Radiology
|January 30, 2004
Summary
Near-infrared diffuse optical tomography (DOT) can accurately image breast cysts. This technology differentiates cysts from solid tumors by measuring distinct optical properties, aiding breast cancer diagnosis.
Area of Science:
- Medical Imaging
- Biomedical Optics
- Breast Cancer Diagnostics
Background:
- Near-infrared diffuse optical tomography (DOT) offers potential for enhanced contrast resolution in breast cancer detection.
- Clinical evaluation of DOT has primarily focused on solid tumors, with limited data on cyst imaging.
Purpose of the Study:
- To present a pilot clinical study evaluating DOT imaging of breast cysts.
- To assess the capability of DOT in characterizing tissue optical properties for cyst detection.
Main Methods:
- Six breast cases were studied using a compact, parallel-detection DOT system.
- Finite element-based reconstruction generated images of tissue absorption and scattering.
- Optical images were correlated with mammography, sonography, and in vitro optical property measurements.
Main Results:
- DOT demonstrated substantial contrast between cysts and surrounding breast parenchyma.
- Optical imaging accurately located and sized cysts, consistent with mammographic and sonographic findings.
- In vitro measurements validated the quantitative accuracy of imaged optical properties for cyst fluid.
Conclusions:
- This study confirms that DOT can quantitatively image breast cysts (1-4 cm diameter).
- Cysts are distinguishable from solid tumors due to lower absorption and scattering coefficients compared to normal tissue.
- DOT shows promise as a non-invasive tool for differentiating benign cysts from malignant tumors.