We are developing a digital radiography system based on double sided microstrip silicon crystal. The read-out system consists of a VLSI integrated circuit that has the following properties: low noise preamplification, pulse shaping, threshold discrimination. The current signals coming out of the integrated circuit are converted into TTL level signals by discrete component electronics. A Time-to-Digital-Converter + Transputer-based acquisition system reads the TTL signals and reconstructs the impact point of the incident photon. We made a study of the spatial resolution by measuring the Square Wave Resolution Function. To test the imaging capability of the system, we made some radiographs of low contrast (<10%) phantoms. Moreover, an image of a small sample of bone tissue has been obtained by scanning technique (average contrast of the phantom is 20%).

Development of a digital radiography system based on silicon microstrip detector

BISOGNI, MARIA GIUSEPPINA;DEL GUERRA, ALBERTO;FANTACCI, MARIA EVELINA;ROSSO, VALERIA;STEFANINI, ARNALDO;
1996-01-01

Abstract

We are developing a digital radiography system based on double sided microstrip silicon crystal. The read-out system consists of a VLSI integrated circuit that has the following properties: low noise preamplification, pulse shaping, threshold discrimination. The current signals coming out of the integrated circuit are converted into TTL level signals by discrete component electronics. A Time-to-Digital-Converter + Transputer-based acquisition system reads the TTL signals and reconstructs the impact point of the incident photon. We made a study of the spatial resolution by measuring the Square Wave Resolution Function. To test the imaging capability of the system, we made some radiographs of low contrast (<10%) phantoms. Moreover, an image of a small sample of bone tissue has been obtained by scanning technique (average contrast of the phantom is 20%).
1996
Beccherle, R; Bertolucci, E; Bisogni, MARIA GIUSEPPINA; Bottigli, U; Collins, T; Conti, M; DEL GUERRA, Alberto; Fantacci, MARIA EVELINA; Gambaccini, M; Kipnis, I; Marchesini, R; Marziani, M; Rosso, Valeria; Russo, P; Russo, S; Stefanini, Arnaldo; Taibi, A; Tripiccione, R.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/175944
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