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%).
|Autori interni:||BISOGNI, MARIA GIUSEPPINA|
DEL GUERRA, ALBERTO
FANTACCI, MARIA EVELINA
|Autori:||Beccherle R; Bertolucci E; Bisogni M; Bottigli U; Collins T; Conti M; Del Guerra A; Fantacci ME; Gambaccini M; Kipnis I; Marchesini R; Marziani M; Rosso V; Russo P; Russo S; Stefanini A; Taibi A; Tripiccione R|
|Titolo:||Development of a digital radiography system based on silicon microstrip detector|
|Anno del prodotto:||1996|
|Appare nelle tipologie:||1.1 Articolo in rivista|