Abstract: A scintillator panel includes at least one light emitting layer and at least one non-light emitting layer laminated, wherein the light emitting layer contains phosphor particles, and when the thickness of the light emitting layer is represented by A, a relationship among a cumulative 50% particle diameter D50 of the phosphor particles based on volume average, a cumulative 90% particle diameter D90 of the phosphor particles based on volume average, and the thickness A satisfies, D50<A and D90<2A.

Abstract: A scintillator panel includes at least one light emitting layer and at least one non-light emitting layer laminated, wherein the light emitting layer contains phosphor particles, and when the thickness of the light emitting layer is represented by A, a relationship among a cumulative 50% particle diameter D50 of the phosphor particles based on volume average, a cumulative 90% particle diameter D90 of the phosphor particles based on volume average, and the thickness A satisfies, D50<A and D90<2A.

Abstract: The scintillator panel includes a support, a reflective layer on the support, and a scintillator layer formed on the reflective layer by deposition. The reflective layer includes light-scattering particles and a binder resin. The light scattering particles are buried in the binder resin such that there is an area free of light scattering particles in the reflective layer.

Abstract: The present invention provides a radiation image detecting device which suppresses occurrence of image irregularities and reduction of sharpness by joining a planar light-receiving device and a scintillator panel so that the distance between the planar light-receiving device and the scintillator panel via an adhesive layer is uniform in plane. The present invention also provides a process for producing the radiation image detecting device. The radiation image detecting device includes, in order, a scintillator panel including a support and a scintillator layer on the support, the scintillator layer having a film-thickness distribution; an adhesive layer; and a planar light-receiving device. In the radiation image detecting device, at least one of the support and the planar light-receiving device bends, so that the scintillator panel and the planar light-receiving device are arranged in plane via the adhesive layer at uniform distance.

Abstract: The present invention is directed to obtain a radiation detector and a radiation imaging system that can perform one-shot energy subtraction method at low cost. The radiation detector of the invention includes a phosphor (Fa), a phosphor (Fb) having a different fluorescence lifetime from the phosphor (Fa), a light receiving element that uses an internal photoelectric effect, and a controller that controls the light receiving element to perform, for one-shot X-ray irradiation, a plurality of times of reading of morphological image information at a time interval.

Abstract: The scintillator panel includes a support, a reflective layer on the support, and a scintillator layer formed on the reflective layer by deposition. The reflective layer includes light-scattering particles and a binder resin. The light scattering particles are buried in the binder resin such that there is an area free of light scattering particles in the reflective layer.

Abstract: The scintillator panel includes a support, a reflective layer on the support, and a scintillator layer formed on the reflective layer by deposition. The reflective layer includes light-scattering particles and a binder resin. A specific region of the reflective layer is defined by a resin or includes light-scattering particles having a specific area average particle diameter, or the reflective layer has a specific arithmetic average roughness.

Abstract: The present invention provides a radiation image detecting device which suppresses occurrence of image irregularities and reduction of sharpness by joining a planar light-receiving device and a scintillator panel so that the distance between the planar light-receiving device and the scintillator panel via an adhesive layer is uniform in plane. The present invention also provides a process for producing the radiation image detecting device. The radiation image detecting device includes, in order, a scintillator panel including a support and a scintillator layer on the support, the scintillator layer having a film-thickness distribution; an adhesive layer; and a planar light-receiving device. In the radiation image detecting device, at least one of the support and the planar light-receiving device bends, so that the scintillator panel and the planar light-receiving device are arranged in plane via the adhesive layer at uniform distance.

Abstract: Disclosed is a method of manufacturing a flat panel detector such that the surface on the side of a fluorescent body layer of a scintillator panel which has the fluorescent body layer comprising a column crystal on the supporting body, is coupled to the planar light receiving element surface of a light-receiving element, comprising: a step of manufacturing the scintillator panel which has a larger area than that of the planar light receiving element surface; a step of trimming the edges of the scintillator panel, obtained by the step of manufacturing the scintillator panel, to correspond to the area of the planar light receiving element surface; and a step of coupling the edge-trimmed scintillator panel to the planar light receiving element surface, thus providing a flat panel detector which has an excellent productivity and that can be made small in size without non-image area.

Abstract: An object of the invention is to provide scintillator panels which can give radiographic images such as X-ray images with excellent sharpness and excellent uniformity of sharpness, which realize devices such as flat panel detectors having uniform image quality characteristics in the light-receiving plane, and which exhibit excellent cuttability, excellent sharpness and excellent in-plane uniformity of sharpness. A scintillator panel of the invention includes a support, a reflective layer on the support, and a scintillator layer formed on the reflective layer by deposition. The reflective layer includes light-scattering particles and a binder resin. A specific region of the reflective layer is defined by a resin or includes light-scattering particles having a specific area average particle diameter, or the reflective layer has a specific arithmetic average roughness.

Abstract: A scintillator panel exhibiting enhanced moisture resistance is disclosed, comprising a scintillator sheet provided on a substrate with a scintillator layer, and the whole of the scintillator sheet is covered with a protective layer and a space in which gas is capable of flowing is provided between the protective layer and the scintillator sheet.

Abstract: A flat panel radiation detector is disclosed, comprising a scintillator panel provided on a support with a phosphor layer comprising columnar crystals and a protective layer sequentially in this order, and the scintillator panel being coupled with a planar light receiving element having plural picture elements which are arranged two-dimensionally, in which the difference between to average void fraction of an edge portion of the phosphor layer and the average void fraction of a base portion is not less than 5% and not more than 25%, and the void fraction decreases from the base portion to the edge portion. There is provided a flat panel radiation detector with a phosphor layer which exhibits enhanced physical resistance to shock and is superior in sharpness and emission efficiency.

Abstract: Provided is a flat panel detector which prevents aging deterioration of characteristics of a phosphor layer, protects the phosphor layer from chemical alteration or physical impact, and maintains a stable contact state between a scintillator panel and a flat light receiving element. Disclosed is a flat panel detector comprising a scintillator panel comprising a scintillator provided with a phosphor layer on a substrate and a protective layer covering the phosphor surface of the scintillator, and the scintillator panel being placed on the surface of a flat light receiving element comprising plural picture elements which are two-dimensionally arranged, wherein a releasable adhesive layer is provided on the protective layer surface.

Abstract: A flat panel radiation detector is disclosed, comprising a scintillator panel provided on a support with a phosphor layer comprising columnar crystals and a protective layer sequentially in this order, and the scintillator panel being coupled with a planar light receiving element having plural picture elements which are arranged two-dimensionally, in which the difference between to average void fraction of an edge portion of the phosphor layer and the average void fraction of a base portion is not less than 5% and not more than 25%, and the void fraction decreases from the base portion to the edge portion. There is provided a flat panel radiation detector with a phosphor layer which exhibits enhanced physical resistance to shock and is superior in sharpness and emission efficiency.

Abstract: Disclosed is a method of manufacturing a flat panel detector such that the surface on the sale of a fluorescent body layer of a scintillator panel which has the fluorescent body layer comprising a column crystal on the supporting body, is coupled to the planar light receiving element surface of a light-receiving element, comprising: a step of manufacturing the scintillator panel which has a larger area than that of the planar light receiving element surface; a step of trimming the edges of the scintillator panel, obtained by the step of manufacturing the scintillator panel, to correspond to the area of the planar light receiving element surface; and a step of coupling the edge-trimmed scintillator panel to the planar light receiving element surface, thus providing a flat panel detector which has an excellent productivity and that can be made small in size without non-image area.

Abstract: Provided is a scintillator panel having excellent sharpness and graininess. In the scintillator panel, the scintillator panel and a surface of a planar light receiving element can be brought into uniform contact with each other within the surface, and deterioration of sharpness between the scintillator panel surface and the surface of the planar light receiving element is reduced. Furthermore, a method for manufacturing such scintillator panel is also provided. The scintillator panel is provided by arranging a phosphor layer composed of phosphor columnar crystal on a polymer film substrate. A leading end portion of the phosphor columnar crystal is flattened by pressurized thermal processing.

Abstract: A scintillator plate which is excellent in sharpness and luminance is disclosed, comprising sequentially on a substrate a reflection layer and a scintillator layer containing cesium iodide and an activator and having a thickness of L, wherein the following requirement (1) is met: 2?B/A??Requirement (1) wherein A is an average activator concentration of the scintillator layer and B is an activator concentration in a region of the scintillator layer from the reflection layer side to the position of L/5.

Abstract: A scintillator panel exhibiting enhanced moisture resistance is disclosed, comprising a scintillator sheet provided on a substrate with a scintillator layer, and the whole of the scintillator sheet is covered with a protective layer and a space in which gas is capable of flowing is provided between the protective layer and the scintillator sheet.

Abstract: A scintillator panel exhibiting enhanced emission luminance is disclosed, comprising a phosphor layer containing a phosphor capable of emitting light upon exposure to radiation, a substrate supporting the phosphor layer and a protective film covering the phosphor layer and the substrate, wherein the phosphor layer comprises two or more layers, and satisfying the following expression 1: 1.0?B/A?1000 ??Expression 1: wherein B is an average activator concentration (mol %) of an uppermost phosphor layer, based on a phosphor and A is an average activator concentration (mol %) of the other phosphor layers, based on a phosphor.

Abstract: There is disclosed a radiation image detecting apparatus which has achieved enhanced moisture resistance of a scintillator and enhanced image quality such as sharpness of a radiation image. The radiation image detecting apparatus is provided with a scintillator panel comprising a phosphor layer on a substrate and a photoelectric conversion panel, in which the scintillator panel is held between the photoelectric conversion panel and an opposed base material, and the periphery of the photoelectric conversion panel adheres to the periphery of the opposed base material with an adhesive, and pressure of a gas in the space between the photoelectric conversion panel and the opposed base material being lower than an atmospheric pressure.