Abstract: A method and apparatus for correcting a signal representation of a radiation image of an object wherein correction by means of correction values is performed simultaneously with image read out.

Abstract: A CsX:Eu phosphor produced by heating a cesium halide with a Europium compound containing one or more halides selected from the group consisting of F, Cl, Br and I. Preferably the Europium compound is selected from the group consisting of EuX′2, EuX′3 and EuOX′, X′ being one or more halides selected from the group consisting of F, Cl, Br and I. The invention also includes novel phosphors having properties inherent to the manufacturing process as well as other phosphors containing a mixture of Br and Cl in the cesium halide, europium doped phosphor.

Abstract: An X-ray cassette for computed radiography is provided, said cassette having a form of a hollow box comprising top and bottom, front and rear, and lateral sides, said top and bottom sides having width dimensions, between said lateral sides, and depth dimensions, between said front and rear sides, which are substantially greater than the dimensions of said front, rear and lateral sides, between said top and bottom sides, wherein said bottom side and said front, rear and lateral sides have a higher material stiffness than the top side and wherein said top side is a deformable carrier or support material, supporting a storage or stimulable phosphor sheet layer.

Abstract: An optical memory plate particularly suitable for identification purposes or protection against forgery and counterfeiting radiation provides inscription of data and read-out of thus stored inscription data, comprises a europium doped alkali metal halide storage phosphor layer, and, more preferably, a stimulable CsBr:Eu phosphor substantially free of alkaline earth metals.

Abstract: An apparatus and a method in which the apparatus is used in order to provide ability to test and ascertain the authenticity an item differing from a radiation image storage phosphor panel, characterized in that said item is applied onto or into at least part thereof, with storage phosphor particles, wherein said method comprises the steps of checking for presence of a selected storage phosphor onto or into said item, by first irradiating the item with electromagnetic radiation having a wavelength shorter than the wavelength emitted by the stimulable phosphor, stimulating the phosphor with electromagnetic radiation having a wavelength longer than the wavelength emitted by the phosphor, detecting the stimulated emission of the phosphor and transforming the light signal into a visual and/or an audio signal.

Abstract: A CsBr:Eu phosphor showing a narrow emission spectrum upon UV-excitation and panels including such a phosphor are disclosed. Also methods for preparing such a phosphor have been described.

Abstract: A method of preparing a phosphor screen having at least a substrate and a phosphor layer comprising a CsX:Eu2+ phosphor wherein X represents a halide selected from a group consisting of Br and Cl and wherein the phosphor is deposited by physical vapour deposition on the substrate. During deposition the substrate is at a temperature in the range of 135° C. to 235° C. and variation of the temperature of the substrate occurring during the deposition process is not more than 50° C.

Abstract: A phosphor panel with a protective coating divided in at least two layers, a layer A, being closest to said phosphor layer and a layer B farther away from said phosphor layer wherein the layer A is a layer of parylene.

Abstract: A stimulable phosphor screen or panel has been described, wherein said stimulable phosphor screen or panel comprises a phosphor layer and a support characterized in that an intermediate layer arrangement of an X-ray absorbing foil or layer and, farther from the support, a stimulated light reflecting foil is present between said support and said phosphor layer.

Abstract: A method has been disclosed for manufacturing a binderless storage phosphor screen or panel comprising a support and a stimulable phosphor layer with a layer thickness in the range from 100 &mgr;m up to 1000 &mgr;m, said phosphor layer having a transparency of at least 50% for radiation in the wavelength range from 350 nm up to 750 nm, characterized in that said transparency has been provided by melting of a powdery phosphor or a phosphor present in structured form in a structured layer, at least in part, in order to get a liquid phosphor layer, followed by solidifying said liquid phosphor layer.

Abstract: A device in form of a practical and reusable card for personal monitoring of incident penetrating radiation energy and for reading said energy comprising a stimulable phosphor absorbing and storing said energy and being stimulable with a wavelength &lgr;a; an electroluminescent phosphor emitting, upon application of an electrical field, stimulation light with wavelength &lgr;a, said wavelength &lgr;a being different from the said incident penetrating radiation, and wherein said device is equipped with means in order to apply an electrical field on said electroluminescent phosphor and wherein said stimulable phosphor and said electroluminescent phosphor are positioned relative to each other so that said light emitted by said electroluminescent phosphor reaches said stimulable phosphor for stimulating said phosphor in order to release stimulated light.

Abstract: Needle-shaped CsBr:Eu2+ storage phosphor crystal particles in form of a cylinder suitable for use in flat storage phosphor panels have been provided, wherein said particles have an average cross-section in the range from 1 &mgr;m up to 30 &mgr;m and an average length, measured along the casing of said cylinder, in the range from 100 &mgr;m up to 1000 &mgr;M.

Abstract: A layer arrangement comprising, at least in a binderless layer thereof, one or more vapor deposited pigments like the preferred nanocrystalline &bgr;-Cu-phthalocyanine nanocrystalline dye compound has been disclosed, wherein said layer layer arrangement is, in a preferred embodiment a photostimulable phosphor plate or panel having a binderless needle-shaped photostimulable alkali metal phosphor, and, more preferably, a CsBr:Eu2+ phosphor, showing besides a high image definition, an excellent preservation of color stability; and wherein the thus produced binderless photostimulable phosphor screen is overcoated with a strong protective layer in order to provide ability for easy transport through a scanning module, without jamming, in a diagnostic radiographic image reading system.

Abstract: A binderless stimulable phosphor screen is provided, comprising a vapor deposited phosphor layer on a support, wherein between the support and the phosphor layer a ceramic layer is present, wherein said ceramic layer preferably comprises a mixture of pigments so that the optical density of the phosphor screen is higher for the stimulating wavelength than for the stimulated emission wavelength of the vapor deposited phosphor.

Abstract: A binderless stimulable phosphor screen has been described, comprising a phosphor layer with needle-shaped phosphor crystals on a support absorbing at least 30% of the stimulating light and reflecting at least 60% of the stimulated light, wherein the support can be a PET support including a mixture of blue and white pigments.

Abstract: A radiography system is disclosed of the type having means for irradiation of an object in order to form an image of the said object or in order to detect irradiation of said object, said radiography system comprising a sensor having an exposure response function, wherein the sensor is in form of a stimulable storage phosphor plate, comprising stimulable storage phosphors, preferably having a dark-decay of more than 24 hours, wherein energy of stimulation radiation is higher than energy of emission radiation upon stimulation of said storage phosphors.

Abstract: A CsX:Eu phosphor showing a narrow emission spectrum upon UV-excitation and panels including such a phosphor are disclosed. Also methods for preparing such a phosphor have been described.

Abstract: A phosphor panel with a protective coating divided in at least two layers: a layer A, being closest to said phosphor layer and a layer B farther away from said phosphor layer wherein the layer A has a lower water vapour permeability coefficient than the layer B. Layer A has a water vapour permeability coefficient, P, so that 1 0 ≤ P ≤ 1 × 10 - 11 ⁢ cm 3 ⁡ ( S ⁢   ⁢ TP ) · cm cm 2 · s · P ⁢   ⁢ a .

Abstract: A phosphor panel with a protective coating divided in at least two layers, a layer A, being closest to said phosphor layer and a layer B farther away from said phosphor layer wherein the layer A is a layer of parylene.

Abstract: A radiation image that has been stored in photostimulable phosphor screen comprising a divalent europium activated cesium halide is read out by stimulating the phosphor screen by means of stimulating radiation, detecting light emitted by the phosphor screen upon stimulation and converting the detected light into a signal representation of said radiation image. After read out the phosphor screen is erased by exposing it to erasing light emitted by at least one electroluminescent lamp or by an array of light emitting diodes.