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.

Experimental study of Compton scattering reduction in digital mammographic imaging / Amendolia, Salvator Roberto; Oliva, Piernicola. - In: IEEE TRANSACTIONS ON NUCLEAR SCIENCE. - ISSN 0018-9499. - 49:5, Part 1(2002), pp. 2361-2365. [10.1109/TNS.2002.803816]

Experimental study of Compton scattering reduction in digital mammographic imaging

Amendolia, Salvator Roberto;Oliva, Piernicola;Zucca, Sergio;
2002

Abstract

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.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11388/262370
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