Amendolia, Salvator Roberto and Bisogni, Maria Giuseppina and Delogu, Pasquale and Fantacci, Maria Evelina and Novelli, Marzia and Oliva, Piernicola and Quattrocchi, Mariagrazia and Rosso, Valeria and Stefanini, Arnaldo and Zucca, Sergio (2002) Experimental study of Compton scattering reduction in digital mammographic imaging. IEEE Transactions on Nuclear Science, Vol. 49 (5, Part 1), p. 2361-2365. ISSN 0018-9499. Article.
In mammography, the first cause of image contrast reduction arises from the photons scattered inside the examined organ. The amount of Compton scattering strongly depends on the irradiation area and on the distance between the organ and the X-ray detector. We have experimentally evaluated how these geometrical conditions affect the scattering fraction. Our experimental setup includes a single photon counting device based on a silicon pixel detector as X-ray sensor; a lucite cylinder to simulate the breast tissue, and a lead collimator to define the irradiation area. We have evaluated the contrast and the signal-to-noise ratio for images acquired in different conditions.
I documenti depositati in UnissResearch sono protetti dalle leggi che regolano il diritto d'autore
Repository Staff Only: item control page