δείτε την πρωτότυπη σελίδα τεκμηρίου στον ιστότοπο του αποθετηρίου του φορέα για περισσότερες πληροφορίες και για να δείτε όλα τα ψηφιακά αρχεία του τεκμηρίου*
Evaluation of the GSO : Ce scintillator in the X-ray energy range from
40 to 140 kV for possible applications in medical X-ray imaging
Nikolopoulos, D.
Valais, I.
Kandarakis, I.
Cavouras, D. and
Linardatos, D.
Sianoudis, I.
Louizi, A.
Dimitropoulos, N.
and Vattis, D.
Episkopakis, A.
Nomicos, C.
Panayiotakis, G.
The purpose of the present study was to evaluate, under X-ray medical
imaging conditions, the X-ray luminescence efficiency (XLE) and the
optical quantum gain (OQG) of the Gd2SiO5:Ce scintillator in single
crystal form, suitable for tomographic applications. Intrinsic physical
properties and light emission characteristics of the Gd2SiO5:Ce
scintillator, were also studied. Both experimental and Monte Carlo
techniques were used. Various X-ray tube voltages (40-140 kV), currently
employed in X-ray imaging applications, were used. XLE was found to vary
slowly with X-ray tube voltage from (0.021 +/- 0.003) to (0.017 +/-
0.003). OQG varied from (317 +/- 18) to (466 +/- 23) light photons per
incident X-ray. These values were adequately high for imaging
applications using the particular energy range. Additionally, it was
found by Monte Carlo simulations that for crystal thicknesses higher
than 0.5 cm both XLE and OQG reached saturation levels, indicating that
higher thickness crystals are of no practical use in X-ray medical
imaging. (c) 2006 Elsevier B.V. All rights reserved.
(EN)
*Η εύρυθμη και αδιάλειπτη λειτουργία των διαδικτυακών διευθύνσεων των συλλογών (ψηφιακό αρχείο, καρτέλα τεκμηρίου στο αποθετήριο) είναι αποκλειστική ευθύνη των αντίστοιχων Φορέων περιεχομένου.
Evaluation of the GSO : Ce scintillator in the X-ray energy range from 40 to 140 kV for possible applications in medical X-ray imaging
Evaluation of the GSO : Ce scintillator in the X-ray energy range from 40 to 140 kV for possible applications in medical X-ray imaging
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