In mammography, the first cause of image contrastarises 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 Incite 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. RI Oliva, Piernicola/E-5839-2012
Amendolia, S.R., Bisogni, M.G., Delogu, P., Fantacci, M.E., Novelli, M., Oliva, P., et al. (2002). Experimental study of Compton scattering reduction in digital mammographic imaging. IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 49(5), 2361-2365 [10.1109/TNS.2002.803816].
Experimental study of Compton scattering reduction in digital mammographic imaging
Delogu, P.;
2002-01-01
Abstract
In mammography, the first cause of image contrastarises 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 Incite 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. RI Oliva, Piernicola/E-5839-2012
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/11365/1006279
Attenzione
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo