Konica Minolta Medical and Graphic, Inc.

Konica Minolta, Inc.

Masashi Kondo

Takehiko Shoji

Mitsuru Sekiguchi

Yasushi Nagata

Kuniaki Nakano

Shigetami Kasai

Keiko Itaya

Hideki Shibuya

Kei Isoda

Yasushi Nakano

Tadashi Arimoto

Hiromichi Shindou

Hiroshi Isa

Makoto Iijima

Naoyuki Sawamoto

Mitsuko Miyazaki

Shibuya Hideki

Nakano Kuniaki

A radiographic image detector includes a phosphor layer, a heat shield layer, and a photoelectric converter in this order, wherein the heat shield layer has a thickness T (&#x3bc;m) and a thermal conductivity C (W/m&#xb7;K) satisfying that C/T is from 0.004 to 5.

Radiographic image detector

A radiograph detector includes: a fluorescent layer, a bonding layer, and a light detector disposed in this order, wherein the fluorescent layer includes fluorescent particles, first binder resin, and second binder resin, and the second binder resin contains a binder polymer identical to a bonding layer forming polymer contained in the bonding layer.

Radiograph detector and method for manufacturing the same

A method for erasing bright burn includes: applying, to a scintillator, visible light having an intensity peak at a wavelength in the range of 405 nm to 500 nm, wherein the scintillator includes cesium iodide and is provided in a radiographic imaging device having a photoelectric transducer.

Method for erasing bright burn and radiographic imaging device having bright burn-erasing function

The invention provides radiographic image detectors in which a scintillator layer itself exhibits improved flexibility and is prevented from crystal breakage while the scintillator layer and a photoelectric conversion element are bonded to each other via uniform thickness without forming defects. The radiographic image detector includes a substrate, a scintillator layer with a columnar crystal structure disposed on the substrate, an optical coupling layer and a photoelectric conversion element. The scintillator layer has a flexural elastic modulus Esc satisfying relationships represented by Expression (I) as measured by a cantilever test in which the scintillator layer disposed on the substrate is held in a cantilever condition and is bent under a uniformly distributed load with the columnar crystal structure side being bent outward:&#x2266;&#x2212;0.43+372 and&#x2267;&#x2212;0.16+98&#x2003;&#x2003;(I) (In Expression (I), Esc is the flexural elastic modulus (kg/mm) of the scintillator layer and M is the thickness (&#x3bc;m) of the scintillator layer).

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.

Method of manufacturing flat panel detector

Disclosed is a preparation method of a radiation image conversion panel by a vapor deposition method, in which a support member is supported and rotated and the stimulable phosphor evaporated from the evaporation source is deposited onto the support member to form a stimulable phosphor layer. The radiation image conversion panel manufactured by the method is also disclosed.

Radiation image conversion panel and preparation method thereof

The scintillator plate has an undercoat layer and a phosphor layer. The phosphor layer has phosphor columnar crystals using the undercoat layer side as a base. When the phosphor layer is halved in terms of thickness in the lamination direction and the respective halves constitute a tip side portion and a base side portion of the phosphor columnar crystals, a ratio (B/A) of an optical transmittance (B) of the base side portion to an optical transmittance (A) of the tip side portion is not less than 70% and not more than 99%.

Scintillator plate and radiation detection panel

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&#x2266;&#x2266;1000 &#x2003;&#x2003;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.

Scintillator panel

A scintillator panel comprising: a radiation-transparent substrate; and a phosphor layer provided on the substrate, the phosphor layer emitting light when irradiated with a radiation, wherein at least one edge of the substrate and at least one edge of the phosphor layer are arranged on a same plane.

Scintillator panel, method of manufacturing the same and radiation imaging apparatus

A radiation flat panel detector is created in which degradation of a phosphor layer property during aging is inhibited, the phosphor layer is protected from chemical alteration and physical impact, and sharpness is excellent. A flat panel detector possessing a light-receiving element and provided thereon, a scintillator panel possessing a scintillator sheet having a phosphor layer provided on a substrate and provided thereon, a first protective film placed on the phosphor layer side and a second protective film placed on the substrate side to seal the scintillator sheet, wherein the light-receiving element is provided on the first protective film side of the scintillator panel; the scintillator sheet is sealed at 5-8000 Pa; and the phosphor layer brought into contact with the first protective film and the light-receiving element plane brought into contact with the first protective film both have a surface roughness Ra of 0.05-0.8 &#x3bc;m.

Flat panel detector

A scintillator plate comprising: (i) a radiation transmissive substrate; (ii) a light absorbing layer formed on the substrate, the light absorbing layer absorbing light of a prescribed wavelength range; and (iii) a scintillator layer formed on the light absorbing layer, the scintillator layer converting radiation to the light having a wavelength absorbable to the light absorbing layer.

Scintillator plate, manufacturing method of the same and radiation image sensor

An objective is to provide a scintillator panel by which a converted light signal can be efficiently transmitted to suitably realize an FPD exhibiting a high radiation-to-light conversion efficiency. Also provided is a scintillator panel possessing a substrate and provided thereon, a phosphor layer possessing columnar crystals made of cesium iodide, wherein a columnar crystal tip angle is 40-80&#xb0;. Further, the above-described phosphor is preferably formed via vacuum evaporation.

A method of producing a phosphor plate comprising the step of vapor depositing a phosphor raw material on a substrate to form a phosphor layer on the substrate in a vacuum container of a vapor deposition apparatus, wherein the vapor deposition is carried out in an atmosphere of a fluorinated solvent gas having a partial pressure of 5&#xd7;10to 5&#xd7;10Pa.

Production method of phosphor plate and phosphor plate

An object is to provide a scintillator plate exhibiting even sharpness, and further exhibiting enhanced sharpness by use of CsI crystals. Disclosed is a scintillator plate for radiation comprising a support and provided thereon a phosphor layer emitting light caused upon exposure to radiation, wherein the phosphor layer comprises a plurality of phosphor columnar crystals, and any two phosphor columnar crystal diameters represented by a and b (a&#x2267;b) satisfy the following inequality of 1.0&#x2266;a/b&#x3c;1.5. Further disclosed is a scintillator plate for radiation comprising a support and provided thereon a phosphor layer emitting light caused upon exposure to radiation, wherein the phosphor layer comprises a phosphor made from cesium iodide (CsI) as a base material and an activator, and a most dominant growth direction in the phosphor is (n 0 0) plane (where n=1, 2 or 3).

Scintillator plate for radiation

A radiation image conversion panel is disclosed, comprising a support having thereon a stimulable phosphor layer formed by vapor deposition of a stimulable phosphor, wherein the stimulable phosphor layer meets the following requirement:wherein A is a thickness (&#x3bc;m) of the stimulable phosphor layer and B is a transmittance (%) of a stimulating light or a stimulated emission.

Growing community of inventors

Hachioji, Japan

Masashi Kondo