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Proceedings Paper

Improvements in the field of radiological imaging at the SYRMEP beamline
Author(s): Fulvia Arfelli; Valter Bonvicini; Alberto Bravin; Giovanni Cantatore; Edoardo Castelli; Ludovico Dalla Palma; Renata Longo; Ralf-Hendrik Menk; Alessandro Olivo; Silvia Pani; Paolo Poropat; Michela Prest; Alexander Rashevsky; Luigi Rigon; Giuliana Tromba; Andrea Vacchi; E. Vallazza
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Paper Abstract

One major goal of modern radiology is the improvement of image quality and subsequently the development of sophisticated radiographic methods which are capable of detecting low contrast and small size details in organic samples in particular in mammography where the requirements on contrast resolution and spatial resolution are extremely high. Significant improvements in image quality have been achieved by the SYRMEP (SYnchrotron Radiation for MEdical Physics) collaboration which has designed and built a beamline devoted to medical physics at the synchrotron radiation facility ELETTRA in Trieste (Italy). The detection system developed for digital mammography consists of a silicon pixel detector with a pixel size of 200 X 300 micrometers 2 used in the `edge on' configuration in order to achieve a high conversion efficiency. The detector is equipped with a low noise VLSI amplifier chain; at present. Recently, a multilayer detector prototype has been implemented, consisting of a stack of three single silicon strip layers. This set-up provides a larger sensitive area and subsequently a reduction of the exposure time. Digital images of mammographic phantoms and of in vitro full breast tissue samples show a higher contrast resolution and lower absorbed dose when compared to conventional mammographic images. Besides, further promising studies have been initiated developing novel imaging methods based on the phase effects evidenced by the high degree of coherence of the SR source. At the SYRMEP beamline several experiments have been carried out in order to exploit the potentials of two different techniques, Phase Contrast and Diffraction Enhanced Imaging, respectively. Images showing better detail visibility and enhanced contrast were produced with dose lower or comparable to the conventional one.

Paper Details

Date Published: 6 October 1999
PDF: 11 pages
Proc. SPIE 3770, Medical Applications of Penetrating Radiation, (6 October 1999); doi: 10.1117/12.368168
Show Author Affiliations
Fulvia Arfelli, Univ. degli Studi di Trieste and INFN/Sezione di Trieste (Italy)
Valter Bonvicini, INFN/Sezione di Trieste (Italy)
Alberto Bravin, Societa Sincrotrone Trieste (France)
Giovanni Cantatore, Univ. degli Studi di Trieste and INFN/Sezione di Trieste (Italy)
Edoardo Castelli, Univ. degli Studi di Trieste and INFN/Sezione di Trieste (Italy)
Ludovico Dalla Palma, Univ. degli Studi di Trieste (Italy)
Renata Longo, Univ. degli Studi di Trieste and INFN/Sezione di Trieste (Italy)
Ralf-Hendrik Menk, Societa Sincrotrone Trieste (Italy)
Alessandro Olivo, Univ. degli Studi di Trieste and INFN/Sezione di Trieste (Italy)
Silvia Pani, Univ. degli Studi di Trieste and INFN/Sezione di Trieste (Italy)
Paolo Poropat, Univ. degli Studi di Trieste and INFN/Sezione di Trieste (Italy)
Michela Prest, INFN/Sezione di Trieste (Italy)
Alexander Rashevsky, INFN/Sezione di Trieste (Italy)
Luigi Rigon, Societa Sincrotrone Trieste (Italy)
Giuliana Tromba, Societa Sincrotrone Trieste (Italy)
Andrea Vacchi, INFN/Sezione di Trieste (Italy)
E. Vallazza, INFN/Sezione di Trieste (Italy)

Published in SPIE Proceedings Vol. 3770:
Medical Applications of Penetrating Radiation
H. Bradford Barber; Hans Roehrig, Editor(s)

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