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| Titel: |
Evaluating phosphors for use in X-ray image detectors by the effective performance index (EPI) method: application to Eu3+ activated yttrium based materials |
| Auteur: |
D. Cavouras I. Kandarakis P. Prassopoulos E. Kanellopoulos C.D. Nomicos G.S. Panayiotakis |
| Verschenen in: |
Technology & health care |
| Paginering: | Jaargang 7 (2001) nr. 1 pagina's 53-61 |
| Jaar: |
2001-04-01 |
| Inhoud: |
Phosphor materials used in X-ray image receptors were evaluated by the effective performance index (EPI). EPI describes the dependence of image quality on X-ray to light energy conversion and light diffusion processes. EPI was experimentally determined by means of X-ray luminescence (XLE) and MTF measurements performed on Y<inf>2</inf>O<inf>2</inf>S:Eu, Y<inf>2</inf>O<inf>3</inf>:Eu, and YVO<inf>4</inf>:Eu phosphors. The spectral compatibility of these materials with optical detectors (films, photocathodes, photodiodes) was also determined. Highest EPI values were obtained for Y<inf>2</inf>O<inf>2</inf>S:Eu-GaAs combination at mammographic energies. All phosphors could be of use in digital X-ray imaging being adequately compatible to silicon photodiodes employed in digital detectors. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 6 gevonden artikelen
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