Novel x-ray image sensor using CsBr:Eu phosphor for computed radiography

H. Nanto; Y. Takei; A. Nishimura; Y. Nakano; T. Shouji; T. Yanagita; S. Kasai

doi:10.1117/12.642538

2 March 2006 Novel x-ray image sensor using CsBr:Eu phosphor for computed radiography

H. Nanto, Y. Takei, A. Nishimura, Y. Nakano, T. Shouji, T. Yanagita, S. Kasai

Proceedings Volume 6142, Medical Imaging 2006: Physics of Medical Imaging; 61422W (2006) https://doi.org/10.1117/12.642538
Event: Medical Imaging, 2006, San Diego, California, United States

Abstract

CsBr phosphor ceramics doped with different luminescence center such as In₂O₃, Eu₂O₃, EuCl₃, SmCl₃, TbCl₃, GdCl₃ or NdCl₃ as a candidate of a new photosimulable phosphor for medical x-ray imaging sensor are prepared using a conventional ceramic fabrication process. It is found that x-ray-irradiated Eu-doped CsBr (CsBr:Eu) exhibits intense photostimulated luminescence (PSL). The peak wavelength of the PSL emission and stimulation spectra of CsBr:Eu phosphor ceramic sample is 450 nm and 690 nm, respectively. The dependence of PSL properties on preparing conditions of phosphor ceramic samples, such as Eu concentration, sintering temperature and sintering time, is studied and the optimum preparing condition is also studied. It is found that the PSL intensity of CsBr:Eu phosphor ceramics fabricated under optimum preparation condition is higher than that of commercially available imaging plate (IP) using BafBr:Eu. The image quality of the IP using CsBr:Eu phosphor film is better than that of commercially available IP.

Citation Download Citation

H. Nanto, Y. Takei, A. Nishimura, Y. Nakano, T. Shouji, T. Yanagita, and S. Kasai "Novel x-ray image sensor using CsBr:Eu phosphor for computed radiography", Proc. SPIE 6142, Medical Imaging 2006: Physics of Medical Imaging, 61422W (2 March 2006); https://doi.org/10.1117/12.642538

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