Title :
A Medipix2-based imaging system for digital mammography with silicon pixel detectors
Author :
Bisogni, M.G. ; Delogu, P. ; Fantacci, M.E. ; Mettivier, G. ; Montesi, M.C. ; Novelli, M. ; Quattrocchi, M. ; Rosso, V. ; Russo, P. ; Stefanini, A.
Author_Institution :
Dipartimento di Fisica, Pisa Univ., Italy
Abstract :
In this paper we present the first tests of a digital imaging system based on a silicon pixel detector bump-bonded to an integrated circuit operating in single photon counting mode. The X-rays sensor is a 300 μm thick silicon, 14 by 14 mm2, upon which a matrix of 256 × 256 pixels has been built. The read-out chip, named MEDIPIX2, has been developed at CERN within the MEDIPIX2 Collaboration and it is composed by a matrix of 256 × 256 cells, 55 × 55 μm2. The spatial resolution properties of the system have been assessed by measuring the square wave resolution function (SWRF) and first images of a standard mammographic phantom were acquired using a radiographic tube in the clinical irradiation condition.
Keywords :
X-ray detection; biomedical imaging; digital readout; mammography; phantoms; position sensitive particle detectors; sensors; silicon radiation detectors; 300 mum; CERN; Medipix2-based imaging system; Si; X-rays sensor; clinical irradiation condition; digital imaging system; digital mammography; integrated circuit; radiographic tube; read-out chip; silicon pixel detectors; single photon counting mode; spatial resolution properties; square wave resolution function; standard mammographic phantom; Circuit testing; Detectors; Integrated circuit testing; Mammography; Optical imaging; Photonic integrated circuits; Pixel; Silicon; Spatial resolution; System testing;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2003 IEEE
Print_ISBN :
0-7803-8257-9
DOI :
10.1109/NSSMIC.2003.1352163
