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EnglishCadmium zinc telluride (Cd0.8Zn0.2Te) is nowadays one of the most promising room temperature semiconductors for X- and γ-ray detection. Indeed, its physical characteristics make this detector very suitable for operating under high-intensity fluxes, such as those produced by linear accelerators. For this reason, CdZnTe has been chosen for the set-up of a tomographic facility based on a 12-MeV linear accelerator. This system is a first generation tomograph; it has already been used for preliminary phantoms image acquisition, showing rather good imaging capabilities. The polychromaticity of the source may induce severe beam-hardening artifacts in the final tomographic images. Extensive experimental studies have been carried out to optimize correction algorithms able to reduce such artifacts. A set of images of relevant samples have been acquired in order to evaluate the relationship between the absorption coefficients and the resulting CT numbers.
| Titolo: | High energy tomography using cadmium zinc telluride detectors | |
| Autore/i: | Rossi M.; Baldazzi G.; Querzola E.; Guidi G.; Scannavini M. G.; Chirco P.; Zanarini M.; Casali F.; Azevedo S. | |
| Autore/i Unibo: | ||
| Anno: | 1996 | |
| Rivista: | ||
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/S0168-9002(96)00385-3 | |
| Abstract: | Cadmium zinc telluride (Cd0.8Zn0.2Te) is nowadays one of the most promising room temperature semiconductors for X- and γ-ray detection. Indeed, its physical characteristics make this detector very suitable for operating under high-intensity fluxes, such as those produced by linear accelerators. For this reason, CdZnTe has been chosen for the set-up of a tomographic facility based on a 12-MeV linear accelerator. This system is a first generation tomograph; it has already been used for preliminary phantoms image acquisition, showing rather good imaging capabilities. The polychromaticity of the source may induce severe beam-hardening artifacts in the final tomographic images. Extensive experimental studies have been carried out to optimize correction algorithms able to reduce such artifacts. A set of images of relevant samples have been acquired in order to evaluate the relationship between the absorption coefficients and the resulting CT numbers. | |
| Data stato definitivo: | 2022-02-28T19:52:49Z | |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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