Please use this identifier to cite or link to this item:
|Title:||A method to evaluate the performance of x-ray imaging scintillators by means of the brightness-sharpness index (BSI)|
|Authors:||Κάβουρας, Διονύσης Α.|
Κανδαράκης, Ιωάννης Σ.
Πρασόπουλος, Παναγιώτης Π.
Νομικός, Κωνσταντίνος Δ.
|Contributors:||Παναγιωτάκης, Γεώργιος Σ.|
|Item type:||Journal article|
|Keywords:||Phosphor;Phosphor screens;Φώσφορος;Εικόνες φωσφόρου|
|Abstract:||PURPOSE: To propose an image quality index, the brightness-sharpness index (BSI), for assessing the quality of the image produced by phosphors of medical imaging detectors. MATERIAL AND METHODS: BSI was evaluated by experimental X-ray luminescence and modulation transfer function measurements. BSI was determined for a number of test phosphor screens prepared from Gd2O2S:Tb, La2O2S:Tb, and Y2O2S:Tb phosphor materials. The screens covered a wide range of coating thicknesses from 50 to 150 mg/cm2 and measurements were performed for X-ray tube voltages between 50 and 120 kVp. RESULTS: Gd2O2S:Tb phosphor exhibited higher brightness and sharpness, as compared to the other phosphor materials, for all screens and X-ray tube voltages used. Best Gd2O2S:Tb performance was observed for thin screens and high tube voltages. La2O2S:Tb exhibited higher BSI values than Y2O2S:Tb for medium and high tube voltages. CONCLUSION: Results showed that phosphor materials of high X-ray detection and X-ray-to-light conversion properties exhibit high BSI values indicating that BSI may provide a means of phosphor performance evaluation for imaging applications.|
|Citation:||Cavouras, D., Kandarakis, I., Prassopoulos, P., Kanellopoulos, E., Nomicos, C., et al. (March 1999). A method to evaluate the performance of x-ray imaging scintillators by means of the brightness-sharpness index (BSI). Acta Radiologica. 40(2). pp. 211-216. SAGE Publications: 1999.|
|Type of Journal:||With a review process (peer review)|
|License:||Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες|
|Appears in Collections:||Δημοσιεύσεις|
Files in This Item:
|A method to evaluate the performance of x-ray imaging scintillators by means of the brightness-sharpness index (BSI).pdf||1.57 MB||Adobe PDF||View/Open|
This item is licensed under a Creative Commons License