Diffraction-enhanced imaging microradiography applied in breast samples

ROCHA, H.S.; G.R. PEREIRA; FARIA, P.A.; KELLERMAN, G.; MAZZARO, I.; TIRAO, G.; GILES, C.; LOPES, R.T.

European Journal of Radiology

Elsevier Science B.V.

Lugar: Irlanda; Año: 2008 vol. 68S p. 37 - 40

0720-048X

The diffraction-enhanced imaging (DEI) is a powerful tool to observe tumors and other diseases in breast tissue and provide more precisediagnostics. In this work DEI was used to analyze breast tissues details that have poor attenuation contrast. An X-ray imaging system withDEI techniques was developed using synchrotron radiation. The DEI experiment was performed in D10A-XRD2 beamline at the BrazilianSynchrotron—LNLS. The pre-monochromator, upstream of the beamline was adjusted to 10.7 keV. The samples were positioned between twochannel-cut Si(3 3 3) in non-dispersive geometry mounted in a double axes diffractometer. A direct conversion water-cooled CCD camera of 1242pixel×1152 pixel of 25 m×25m each was used as a two-dimensional detector in scanning mode. The DEI system could show details in lowattenuation tissues based on the contrast imaging obtained by attenuation, refraction gradient and ultra-small angle scatter characteristics. In thiswork the capacity to observe different types of structures and details in breast tissues were investigated.