Determination of the electron densities of breast neoplasias using the Compton scattering of X-rays / Determinação das densidades eletrônicas de neoplasias mamárias utilizando o espalhamento Compton de raios X

AUTOR(ES)

Marcelo Antoniassi

DATA DE PUBLICAÇÃO

2008

RESUMO

In this work we have been measured Compton scattering from normal and neoplastic (benign and malignant) in experiments using synchrotron radiation and X-rays tube, in order to determine of electronic densities of these tissues. The energies and scattering angles used were respectively 14,0 keV and 150º (x = 1,09 Å-1) for the measurements using synchrotron radiation and 17,44 and 90º (x = 0,99Å-1) for the measurements using a X-ray tube. The results of electronic densities obtained were compared with experimental and theoretical data published previously, showing considerable agreement among them (differences smaller than 5%). Statistical comparisons were accomplished in the obtained distributions, showing that the adipose normal tissue differ of all other types of tissues (P<0.001). Moreover, our results show a tendency of the malignant neoplasias to have an elevated electronic density higher than the fibrous normal tissues and benign neoplasias, fact related to histological and metabolic characteristics of its growth. The obtained results suggest that it is possible to use this technique to characterize and to differentiate the breast tissues, pointing the possibility of its use as complementary tool to the diagnosis of the breast cancer.

ASSUNTO(S)

espalhamento compton breast cancer compton scattering câncer de mama radiodiagnóstico radiology

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