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-ray sensor is a 300-mum-thick silicon, 14 x 14 mm(2) sensitive area, upon which a matrix of 256 x 256 (65536) square pixel, 55 mum in side, has been built. The readout chip, named MEDIPIX2, has been developed at CERN within the MEDIPIX2 collaboration and it is composed by a matrix of 65536 readout channels exactly with the same geometry of the detector. The spatial resolution properties of the system,have been assessed by measuring the square-wave resolution function and the first images of a standard mammographic phantom were acquired using a radiographic tube in the clinical irradiation condition.
Bisogni, M.G., Delogu, P., Fantacci, M.E., Mettivier, G., Montesi, M.C., Novelli, M., et al. (2004). A Medipix2-based imaging system for digital mammography with silicon pixel detectors. IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 51(6), 3081-3085 [10.1109/TNS.2004.839079].
A Medipix2-based imaging system for digital mammography with silicon pixel detectors
Delogu, P.;
2004-01-01
Abstract
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-ray sensor is a 300-mum-thick silicon, 14 x 14 mm(2) sensitive area, upon which a matrix of 256 x 256 (65536) square pixel, 55 mum in side, has been built. The readout chip, named MEDIPIX2, has been developed at CERN within the MEDIPIX2 collaboration and it is composed by a matrix of 65536 readout channels exactly with the same geometry of the detector. The spatial resolution properties of the system,have been assessed by measuring the square-wave resolution function and the first images of a standard mammographic phantom were acquired using a radiographic tube in the clinical irradiation condition.
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https://hdl.handle.net/11365/1006307
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