| 摘要 |
A ghost is reduced while improving the sensitivity. A scintillator has a plurality of columnar crystals formed of thallium-activated cesium iodide, and converts X-rays into visible light and emits the visible light from the distal end of the columnar crystal. The photoelectric conversion panel has a plurality of photodiodes formed of amorphous silicon to generate electric charges by detecting the visible light emitted from the scintillator. Assuming that the maximum emission intensity of the scintillator is I1, a wavelength at which the maximum emission intensity is obtained is WP, and the emission intensity at a wavelength of 400 nm is I2, I2/I1>=0.1 and 540 nm@WP<570 nm are satisfied. |
