| US 7,576,336 B2 | ||
| Radiation image detector | ||
| Takehiko Shoji, Tokyo (Japan); and Yasushi Nakano, Tokyo (Japan) | ||
| Assigned to Konica Minolta Medical & Graphic, Inc., (Japan) | ||
| Filed on Feb. 29, 2008, as Appl. No. 12/39,859. | ||
| Claims priority of application No. 2007-053919 (JP), filed on Mar. 05, 2007. | ||
| Prior Publication US 2008/0217550 A1, Sep. 11, 2008 | ||
| Int. Cl. G01J 1/58 (2006.01) | ||
| U.S. Cl. 250—483.1 | 4 Claims |
| 1. A radiation image detector comprising:
a scintillator panel comprising a radiation transmitting substrate having thereon a phosphor layer having a columnar crystal
structure of CsI produced with a vapor deposition method;
a protection cover provided at a side of the radiation transmitting substrate opposite the phosphor layer, provided that incident
radiation enters through the protection cover; and
a flat light-receiving element provided at a side of the radiation transmitting substrate opposite the protection cover, the
flat light-receiving element comprising a plurality of light-receiving pixels arranged in a two-dimensional form and capable
of converting light emitted from the scintillator panel to electricity, the flat light-receiving element being arranged to
allow pressure contact with the scintillator panel;
wherein the radiation image detector satisfies the following Formula (1):
W(g)<0.31(g/cm2)×S(cm2) Formula (1)
wherein S(cm2) is an area of the radiation transmitting substrate of the scintillator panel and W(g) is a weight of the scintillator panel;
and
the phosphor layer has a thickness of 400 to 1,000 μm, and the area of the radiation transmitting substrate is 500 to 5,000
cm2; and
the radiation transmitting substrate has a thickness of 50-500 μm and is made of a flexible resin film selected from the group
consisting of a polyimide film, a cellulose acetate film, a polyester film, a polyethylene terephthalate film, a polyethylene
naphthalate film, a polyamide film, a triacetate film, and a polycarbonate film.
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