Evaluation of the imaging properties of a direct detection single photon counting based system
- Amendolia, S. R.
- Bisogni, M.
- Bottigli, U.
- Ceccopieri, A.
- Delogu, P.
- Dipasquale, G.
- Fantacci, M. E.
- Marchi, A.
- Marzulli, V. M.
- Oliva, P.
- Palmiero, R.
- Rosso, V.
- Stefanini, A.
- Stumbo, S.
Publication date
January 2001
DOIAbstract
We have tested the imaging properties of a system based on a GaAs matrix that performs the direct detection of photons in the range of radiographic interest. The detector is bump-bonded to a VLSI single photon counting electronics. The imaging properties of the system have been evaluated in terms of the presampling MTF and the DQE(nu), that allow an absolute characterization of imaging properties of digital systems. We have tested other radiographic imaging systems in standard clinical conditions, using the same functions and we have compared them with the GaAs matrix system. (C) 2001 Elsevier Science B.V. All rights reserved
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