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- Title
Effect of the chest wall on breast lesion reconstruction.
- Authors
Yasaman Ardeshirpour; Minming Huang; Quing Zhu
- Abstract
The chest wall underneath the breast tissue affects near-infrared (NIR) diffusive waves measured with reflection geometry. With the assistance of a co-registered ultrasound, the depth and the tilting angle of the chest wall can be determined and are used to model the breast as a two-layer medium. Finite element method (FEM) is suitable for modeling complex boundary conditions and is adapted to model the breast tissue and chest wall. Four parameters of bulk absorption and reduced scattering coefficients of these two layers are estimated and used for imaging reconstruction. Using a two-layer model, we have systematically investigated the effect of the chest wall on breast lesion reconstruction. Results have shown that chest-wall depth, titling angle, and difference between optical properties of two layers of lesion and reference sites affect the lesion reconstruction differently. Our analysis will be valuable and informative to researchers who are using reflectance geometry for breast imaging. The analysis can also provide guidelines for imaging operators to minimize image artifacts and to produce the best reconstruction results.
- Subjects
CHEST (Anatomy); NEAR infrared spectroscopy; BREAST ultrasound; FINITE element method; BOUNDARY value problems; REFLECTANCE; MATHEMATICAL models in medicine
- Publication
Journal of Biomedical Optics, 2009, Vol 14, Issue 4, p044005
- ISSN
1083-3668
- Publication type
Article
- DOI
10.1117/1.3160548