Author/Authors :
Arfelli، نويسنده , , F. and Bonvicini، نويسنده , , V. and Bravin، نويسنده , , A. and Cantatore، نويسنده , , G. and Castelli، نويسنده , , E. and Dalla Palma، نويسنده , , L. and Di Michiel، نويسنده , , M. and Longo، نويسنده , , R. and Olivo، نويسنده , , A. K. Pani، نويسنده , , S. and Pontoni، نويسنده , , D. and Poropat، نويسنده , , P. and Prest، نويسنده , , M. and Rashevsky، نويسنده , , A. and Tromba، نويسنده , , G. and Vacchi، نويسنده , , A. and Vallazza، نويسنده , , E.، نويسنده ,
Abstract :
The SYRMEP (SYnchrotron Radiation for MEdical Physics) collaboration is presently taking data at a beamline at the synchrotron ELETTRA in Trieste to study the performances of a digital silicon pixel imaging system for mammography. Images are obtained with a scanning technique in the energy range 15–30 keV. The readout electronics operates in a single photon counting mode with a photon rate of about 106/(mm2 s), which is still 4 times lower than the maximum rate reachable with the present beamline configuration. Two different detector layouts have been designed, the first one consisting of a single-layer silicon microstrip detector positioned edge-on with respect to the beam, and the second innovative one represented by a matrix of these detectors stacked to cover the full beam dimension (100×4 mm2). We present here the results obtained with a single-layer detector and a double-layer detector (both 5 cm wide) with mammographic phantoms and human breast tissue.
