| 摘要 |
PURPOSE:To reduce artifact by a radiation detector and to detect two kinds of radiation image information of different energy states for energy subtraction treatment with high efficiency. CONSTITUTION:A plane scintillator 31 consisting of a uniform mixture of fluorescent materials A, B of different K absorption ends (characteristic absorption ends) and different light emission wavelengths, a filter member 32 where two kinds of filters a, b having transmittances of the respective fluorescences converted by those fluorescent materials A, B are arranged alternately corresponding to many solid-state photocells P constituting photodetectors 33, and the solid-state photodetectors 33 are piled up. Radiation emitted in the X- direction is converted by a scintillator 31 into image information of fluorescences of two kinds of different energy states, and respective fluorescences penetrate the filter member 32 at intensities corresponding to transmittances of the respective filters a, b. |
