TY - JOUR
T1 - Imaging performance of polycrystalline BaFBr:Eu2+ storage phosphor plates
AU - Li, H.
AU - Hackenschmied, P.
AU - Epelbaum, E.
AU - Batentschuk, M.
N1 - Funding Information:
We would like to acknowledge the financial support of the Bayerischer Forschungsverbund für Oberflächentechnik (FOROB, project II.1). We are also grateful to Professor A. Winnacker for valuable discussions and comments on the manuscript.
PY - 2002/6/15
Y1 - 2002/6/15
N2 - X-ray storage phosphor plates (SPP) initiate a new concept for recording X-ray radiographs, which are increasingly accepted in medical diagnostics and in scientific applications such as structure analysis and materials testing. The present study was undertaken to assess the impact of the median grain size and the fabrication process of BaFBr:Eu2+-based SPP on the image metrics which were characterized by photostimulated luminescence (PSL) sensitivity, modulation transfer function (MTF), Wiener spectrum (WS) and noise equivalent quanta (NEQ). To achieve the highest signal-to-noise ratio (NEQ) which was dependent on X-ray fluence and image spatial frequencies, the grain size has been optimized accordingly. Furthermore, the correlation between the packing structure of grains in the active layer and the granularity noise was investigated. Finally, it was found that for the imaging of Cu-Kα irradiation, which was a softer X-ray quantum energy compared to that used in the medical imaging, variation of the grain size had smaller impact on the MTF and the PSL.
AB - X-ray storage phosphor plates (SPP) initiate a new concept for recording X-ray radiographs, which are increasingly accepted in medical diagnostics and in scientific applications such as structure analysis and materials testing. The present study was undertaken to assess the impact of the median grain size and the fabrication process of BaFBr:Eu2+-based SPP on the image metrics which were characterized by photostimulated luminescence (PSL) sensitivity, modulation transfer function (MTF), Wiener spectrum (WS) and noise equivalent quanta (NEQ). To achieve the highest signal-to-noise ratio (NEQ) which was dependent on X-ray fluence and image spatial frequencies, the grain size has been optimized accordingly. Furthermore, the correlation between the packing structure of grains in the active layer and the granularity noise was investigated. Finally, it was found that for the imaging of Cu-Kα irradiation, which was a softer X-ray quantum energy compared to that used in the medical imaging, variation of the grain size had smaller impact on the MTF and the PSL.
KW - BaFBr:Eu
KW - Modulation transfer function
KW - Noise equivalent quanta
KW - Noise power spectrum
KW - Photostimulated luminescence
KW - Storage phosphor
UR - http://www.scopus.com/inward/record.url?scp=0037096991&partnerID=8YFLogxK
U2 - 10.1016/S0921-5107(02)00068-5
DO - 10.1016/S0921-5107(02)00068-5
M3 - Article
AN - SCOPUS:0037096991
SN - 0921-5107
VL - 94
SP - 32
EP - 39
JO - Materials Science and Engineering B: Solid-State Materials for Advanced Technology
JF - Materials Science and Engineering B: Solid-State Materials for Advanced Technology
IS - 1
ER -