Optical characterization of thin female breast biopsies based on the reduced scattering coefficient.
Phys Med Biol
; 50(11): 2583-96, 2005 Jun 07.
Article
en En
| MEDLINE
| ID: mdl-15901956
One of the main goals in optical characterization of biopsies is to discern between tissue types. Usually, the theory used for deriving the optical properties of such highly scattering media is based on the diffusion approximation. However, biopsies are usually small in size compared to the transport mean free path and thus cannot be treated with standard diffusion theory. To account for this, an improved theory was developed, by the authors, that can correctly describe light propagation in small geometries (Garofalakis et al 2004 J. Opt. A: Pure Appl. Opt. 6 725-35). The theory's limit was validated by both Monte Carlo simulations and experiments performed on tissue-like phantoms, and was found to be two transport mean free paths. With the aid of this theory, we have characterized 59 samples of breast tissue including cancerous samples by retrieving their reduced scattering coefficients from time-resolved transmission data. The mean values for the reduced scattering coefficients of the normal and the tumour tissue were measured to be 9.7 +/- 2.2 cm(-1) and 10.8 +/- 1.8 cm(-1), respectively. The correlation with age was also investigated.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Mama
/
Neoplasias de la Mama
Tipo de estudio:
Health_economic_evaluation
Límite:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Middle aged
Idioma:
En
Revista:
Phys Med Biol
Año:
2005
Tipo del documento:
Article
País de afiliación:
Grecia
Pais de publicación:
Reino Unido