| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a radiation detection device 12, having superior resolution characteristics over the entire region, by solving the problem of inherent resolution decline caused by the irradiation angle. <P>SOLUTION: A radiation detection panel 23 is equipped with a photodetector 22, wherein a plurality of photoelectric conversion elements 33 are formed, and a phosphor film part 21, wherein a scintillator material 36 is formed on the surface of the photodetector 22. In the scintillator material 36, a plurality of columnar crystallites 38 are formed in the surface direction of the photodetector 22. The direction of the columnar crystallites 38 is a normal direction to the surface of the radiation detection panel 23 at the center of the radiation detection panel 23, and has an inclination, from the normal direction toward the center side of the radiation detection panel 23, in proportion to a distance from the center of the radiation detection panel 23 to its periphery. Absorption of X-rays 14 and emission of fluorescence 39 by the scintillator material 36 are generated in the same or proximity columnar crystallites 38, even in the peripheral part 41 of the photodetector 22, and deterioration in the resolution or image distortions are suppressed. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
