Agfa-gevaert

Agfa Gevaert Nv

Agfa Healthcare Nv

Other

Afga-gevaert

Agva-gevaert

Symyx Technologies, Inc.

Agfa Nv

Luc A Struye

Paul Leblans

Peter M Willems

Johan J Lamotte

Ludo Joly

Johann-Martin Spaeth

Luc J Vanmaele

Ilse Mans

Rudi Van Den Bergh

Sabina Elen

Jean-Fran&ccedil;ois Gervais

Martin Devenney

David R Terrell

Melvin Tecotzky

Jan A Van Den Bogaert

Dirk Vandenbroucke

Lodewijk M Neyens

George Blasse

Jan Koninckx

Andries Meijerink

Casper Reaves

Andrew Edgar

Freddy Callens

Thomas Pawlik

Henk Vrielinck

Jean Verelst

Carsten Dietze

Thomas Hangleiter

Stefan Schweizer

A scintillator includes CsBrIdoped with Europium (CsBrI:Eu) wherein x&#x3c;0.5, and is obtained by annealing CsBrI:Eu material at a temperature from 50&#xb0; C. to 280&#xb0; C. The EPR spectrum of the obtained scintillator measured at room temperature at a frequency of 34 GHz shows a maximum signal height at a magnetic field of 1200 mT, and the signal height at 1090 mT and 1140 mT does not exceed 40%, wherein the normalized signal height percentage at 1200 mT is calculated to be 100%. The scintillator is useful in a high energy radiation detection and radiography imaging apparatus.

Europium doped caesium bromo iodide scintillator and detectors thereof with improved conversion efficiency

A radiographic flat panel detector includes a layer configuration in the order given: a) a radiation transparent substrate; and b) a scintillator layer applied by vapor deposition on the radiation transparent substrate; and c) an imaging array between the scintillator layer and a second substrate, characterized in that the radiation transparent substrate has on a side a layer including magnetisable particles and a method for producing the radiographic flat panel detector.

Radiographic flat panel detector having a ferromagnetic layer and the method of production thereof

Method of eliminating the effect of afterglow on a radiation image read out of a photostimulable phosphor screen. For each pixel the amount of afterglow generated by previously scanned pixels in the same line of pixels is determined and subtracted from the digital signal representation of that pixel.

Method of eliminating effect of afterglow on radiation image read out of photostimulable phosphor screen

Stimulable phosphor screens, sheets or panels having alkali metal halide storage phosphors have been disclosed, said phosphors showing emission of red light, after stimulation with an ultraviolet radiation source having a radiation emission maximum of 365 nm, wherein an intensity of red light is not higher than 10% of the blue light emission intensity, and wherein both emission intensities having been measured after stimulation of the said storage phosphors in the phosphor layer of the panel, having stored energy from radiation in the wavelength range shorter than 350 nm.

Stimulable phosphor screens or panels and manufacturing control thereof

The present invention provides an assembly comprising two plates or covers, one of which being an outermost plate or cover, and both, at least in part having a perforation pattern over a surface area covering an open side of a crucible having a bottom and surrounding side walls containing raw materials, wherein said outermost cover is mounted at a distance farther from the said crucible than said cover covering said open side of a crucible, and wherein both covers are mounted versus each other, so that, when viewed through an axis in a direction perpendicular to the bottom of the crucible from a distance to said outermost cover of at least 10 times the distance between said two plates or covers, its contents cannot be observed as their perforations and the crucible are never forming one line, perpendicular to the plane formed by said bottom.

Covering assembly for crucible used for evaporation of raw materials

A device comprises at least one organophosphonium transition metal dye or is provided with a filter, comprising at least one organophosphonium transition metal dye, wherein, in a particular embodiment said device is selected from the group consisting of a scanner, a digitizer, a display and a photographic device.

Device provided with a dedicated dye compound

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.

Optical memory plate or panel

A system has been described for reading out stimulable phosphor screens, plates or panels, whether or not differing from each other in phosphor composition or phosphor layer arrangement, after exposing said screens to X-rays. Said system comprises at least one source of stimulating radiation, an array of transducer elements arranged for detecting light emitted upon stimulation and for converting said light into a signal representation of said image. Said system further comprises filtering means for preventing light, emitted by said source of stimulation light, from being detected by said transducer elements, wherein said filtering means transmits light with a high transmission efficiency for emitted blue light upon stimulation and low transmission for radiation from the stimulating laser source.

System for reading out storage phosphor screens

A system has been described for reading out a plurality of stimulable phosphor screens, plates or panels, after exposing said screens to X-rays having an energy in the range from 25 up to 150 kVp, the screens being selected from the group consisting of binder containing powder screens and binderless, crystalline or amorphous phosphor layer screens; wherein said phosphors are divalent europium activated alkali halide type phosphors wherein said halide is at least one of bromide or a combination of bromide with at least one of chloride and iodide, or divalent europium activated alkaline earth metal halide phosphors, wherein said halide is at least one of fluoride, chloride, bromide and iodide or a combination thereof, and wherein said screens are consecutively subjected to following steps of stimulating said phosphor screens by means of stimulation energy; detecting stimulated emission energy, emitted by the phosphor screen upon stimulation; converting detected energy into a signal representation of said radiation image; erasing said phosphor screen by exposing it to erasing energy; wherein differences in maximum wavelength of stimulation spectra of said differing screens are in the range from 10 nm up to 100 nm, wherein differences in maximum wavelength of stimulated emission spectra of said differing screens are in the range from 10 nm up to 150 nm, and wherein filtering means are provided for preventing stimulation radiation from being detected by detecting means, and for transmitting radiation emitted upon stimulation.

System for reading out a plurality of differing storage phosphor screens

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 &#x3bc;m up to 30 &#x3bc;m and an average length, measured along the casing of said cylinder, in the range from 100 &#x3bc;m up to 1000 &#x3bc;m.

Needle-shaped cylindrical storage phosphor crystals

A Eu-doped CsBr-type storage phosphor screen or panel has been disclosed, providing ratios of ultraviolet luminescence intensities of at least 10/9 after having been exposed to radiation having a wavelength in the range from 150 to 400 nm, measured at same sites without and with pretreatment exposure of said storage phosphor screen or panel with short ultraviolet radiation in the range from 150 to 300 nm and having an energy of 10 mJ/mm, as well as a method of producing a stimulable phosphor screen or panel, characterized in that during or after at least one of the manufacturing steps a radiation exposure treatment is given with radiation sources emitting short ultraviolet radiation in the range from 150 to 300 nm with an energy of at least 10 mJ/mm.

Radiation pretreated stimulable phosphor screen or panel

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.

X-ray cassette for computed radiography and method for use thereof

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.

Shading correction method and apparatus

A layer arrangement comprising, at least in a binderless layer thereof, one or more vapor deposited pigments like the preferred nanocrystalline &#x3b2;-Cu-phthalocyanine nanocrystalline dye compound has been disclosed, wherein said 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:Euphosphor, 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.

Storage phosphor screen having binderless colored layers

Needle-shaped CsBr:Eustorage 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 &#x3bc;m up to 30 &#x3bc;m and an average length, measured along the casing of said cylinder, in the range from 100 &#x3bc;m up to 1000 &#x3bc;M.

Growing community of inventors

Mortsel, Belgium

Luc A Struye