Radiation detection device and system, and scintillator...

Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system

Reexamination Certificate

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Reexamination Certificate

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06974955

ABSTRACT:
In a radiation detection device in which light that is generated at a phosphor layer based on absorbed radiation, the phosphor layer being constituted by connecting side faces of columnar phosphors to each other, is converted into an electric charge at a photoelectric conversion element portion and radiation is detected based on the electric charge, the phosphors have larger column diameters in peripheral regions of the phosphor layer than in a central region thereof. Further, the phosphor layer has a film thickness that is smaller in its peripheral regions than in a central region thereof, thereby preventing breakage of the phosphors.

REFERENCES:
patent: 4985633 (1991-01-01), Vieux et al.
patent: 6838674 (2005-01-01), Otto
patent: 0 903 590 (1999-03-01), None
patent: 2000-75038 (2000-03-01), None
patent: WO 01/50500 (2001-07-01), None
Tornai, M.P., et al., “Investigation of micro-columnar scintillators on an optical fiber coupled compact imaging system.” Nuclear Science Symposium Conference Record, 2000 IEEE, vol. 3, Iss., (Oct. 15-20, 2000), pp. 21/19-21/23 vol. 3.

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