An IP cover having a light-shielding property is detachably mounted on an IP. The IP includes a stimulable phosphor layer on one surface thereof. The IP cover is mounted on the stimulable phosphor layer so as to be closely attached to the stimulable phosphor layer. The IP and the IP cover include notches, and a part of an inspection target is inserted into the notches at the time of inspection. An IP unit is mounted on a blade welded portion of an impeller. Radiation is applied from a radiation irradiation device and a radiation image of the blade welded portion is recorded on the IP as a latent image. The IP cover is detached from the IP unit and the IP is set on a template. The IP is set at an image reading position of a radiation image reading device by the template, and the radiation image is read.

A flat-panel detector includes: a ray-conversion layer configured to convert rays into a light having a first wavelength; and a plurality of imaging units. At least one of the plurality of imaging units includes: a photo sensor configured for receiving the light and converting the light to an electrical signal; and a light guider located a side of the photo sensor adjacent to the ray-conversion layer, the light guider having a light entry surface adjacent to the ray-conversion layer and a light exit surface adjacent to the photo sensor, the light entry surface being configured to receive the light from the ray-conversion layer and having an area greater than an area of the light exit surface, and an orthogonal projection of the light exit surface in a direction perpendicular to the ray-conversion layer at least partially overlapping that of the photo sensor.

An IP cover having a light-shielding property is detachably mounted on an IP. The IP includes a stimulable phosphor layer on one surface thereof. The IP cover is mounted on the stimulable phosphor layer so as to be closely attached to the stimulable phosphor layer. The IP and the IP cover include notches, and a part of an inspection target is inserted into the notches at the time of inspection. An IP unit is mounted on a blade welded portion of an impeller. Radiation is applied from a radiation irradiation device and a radiation image of the blade welded portion is recorded on the IP as a latent image. The IP cover is detached from the IP unit and the IP is set on a template. The IP is set at an image reading position of a radiation image reading device by the template, and the radiation image is read.

Embodiments of the present disclosure provide a flat panel detector and a method of manufacturing the same. The flat panel detector includes: a conversion layer configured to convert rays into a light having a first wavelength; and a plurality of imaging units. At least one of the imaging units includes: a photo sensor configured for receiving the light and converting the light to an electrical signal; and a light guider located a side of the photo sensor adjacent to the ray conversion layer, the light guider having a light entry surface adjacent to the ray conversion layer and a light exit surface adjacent to the photo sensor, the light entry surface being configured to receive the light from the ray conversion layer and having an area greater than an area of the light exit surface, and an orthogonal projection of the light exit surface in a direction perpendicular to the ray conversion layer at least partially overlapping that of the photo sensor.

A scintillator panel includes: a substrate that includes a principal surface and has transparency to the scintillation light; a scintillator layer that is disposed on the principal surface; a frame member that is disposed on the principal surface so as to surround the scintillator layer when viewed in a direction intersecting the principal surface; a protective layer that is disposed on the principal surface and the scintillator layer and is fixed to the frame member so as to seal the scintillator layer; a sheet-shaped optical functional layer that is disposed between the scintillator layer and the protective layer; and an elastic member that is interposed between the optical functional layer and the protective layer and is elastically deformed.

A neutron conversion foil for being used in a neutron detector includes a substrate having a first and second side. The substrate is covered at least on one of the first and second sides with a neutron conversion layer made of a neutron reactive material and being capable of capturing neutrons to thereafter emit light and/or charged particles. The neutron conversion foil is transparent to light such that light originating from the conversion of neutrons can pass through one or several of the neutron conversion foils and thereafter be collected and detected by a light sensing device.

Disclosed herein is a scintillator comprising a plurality of garnet compositions in a single block having the structural formula (1):
M.sup.1.sub.aM.sup.2.sub.bM.sup.3.sub.cM.sup.4.sub.dO.sub.12(1)
where O represents oxygen, M.sup.1, M.sup.2, M.sup.3, and M.sup.4 represents a first, second, third and fourth metal that are different from each other, where the sum of a+b+c+d is about 8, where a has a value of 2 to 3.5, b has a value of 0 to 5, c has a value of 0 to 5 d has a value of 0 to 1, where b and c, b and d or c and d cannot both be equal to zero simultaneously, where M.sup.1 is rare earth element including gadolinium, yttrium, lutetium, or a combination thereof, M.sup.2 is aluminum or boron, M.sup.3 is gallium and M.sup.4 is a codopant; wherein two compositions having identical structural formulas are not adjacent to each other and wherein the single block is devoid of optical interfaces between different compositions.

A scintillator panel includes: a substrate that includes a principal surface and has transparency to the scintillation light; a scintillator layer that is disposed on the principal surface; a frame member that is disposed on the principal surface so as to surround the scintillator layer when viewed in a direction intersecting the principal surface; a protective layer that is disposed on the principal surface and the scintillator layer and is fixed to the frame member so as to seal the scintillator layer; a sheet-shaped optical functional layer that is disposed between the scintillator layer and the protective layer; and an elastic member that is interposed between the optical functional layer and the protective layer and is elastically deformed.

A neutron conversion foil for being used in a neutron detector includes a substrate having a first and second side. The substrate is covered at least on one of the first and second sides with a neutron conversion layer made of a neutron reactive material and being capable of capturing neutrons to thereafter emit light and/or charged particles. The neutron conversion foil is transparent to light such that light originating from the conversion of neutrons can pass through one or several of the neutron conversion foils and thereafter be collected and detected by a light sensing device.

The present invention provides a scintillator panel which is capable of utilizing light emitted by a phosphor at a high efficiency due to particles having a high refractive index being dispersed within a scintillator layer in a favorable state, which thus allows for a marked reduction in the amount of radiation exposure to a subject or the like, and which has a high luminance. The present invention also provides a scintillator panel including a substrate, and a scintillator layer containing metal compound particles and a phosphor, wherein the phosphor is covered by the metal compound at a coverage ratio of 5% or more.