Agfa-gevaert

Agfa Healthcare Nv

Agfa Nv

Ilse Mans

Paul Leblans

Luc A Struye

Kathy Elst

Sabina Elen

Paul R Callant

Jean-Pierre D Tahon

Ludo Neyens

Freddy Callens

Henk Vrielinck

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

In a photostimulable storage phosphor screen or panel wherein said screen comprises storage phosphor particles dispersed in a binder and wherein said particles have a particle size distribution having a dwhich is not more than 15 &#x3bc;m, said dexpressing a grain size limit above which not more than 1% by weight of phosphor powder particles is present in said phosphor powder, its structure noise parameter DQEexceeds a value of 0.70 and a ratio of d(expressed in &#x3bc;m) and DQEis not more than 25:1, wherein DQEis the ratio of the DQEobtained at a dose of 22 mR to the DQEobtained at a dose of 3 mR, as expressed in formula (I)DQE2rel=DQE2(22 mR))/DQE2(3 mR)&#x2003;&#x2003;(I)which is representative for an amount of screen-structure noise produced by said screen or panel in the complete spatial frequency range.

Radiation image storage panel suitable for use in mammographic applications

A radiographic silver halide film material and a radiographic screen/film combination has been disclosed, said material having in at least one light-sensitive layer thereof an emulsion comprising &lcub;111&rcub; tabular silver halide grains rich in silver bromide, spectrally sensitive to irradiation in the wavelength range between 540 and 555 nm by the presence of a combination of at least one J-aggregating spectrally sensitizing cyanine dye according to the formula (I) and of at least one additional cyanine dye providing a shift of maximum absorption wavelength of said combination of less than 10 nm versus in the absence thereof, wherein said additional cyanine dye is at least one monomethine cyanine dye according to the formula (II), essentially having a solubilizing group or a latent solubilizing group, said dyes having been given in the description and in the claims of the present invention.

Radiographic film material and intensifying screen-film combination

A method has been described for preparing an ultrathin tabular grain emulsion rich in silver bromide, having &lcub;111&rcub; major faces, wherein tabular grains having a thickness of less than 0.08 &mgr;m exhibit an average aspect ratio of more than 5:1 and account for at least 75% by number of hexagonal grains and a coefficient of variation on average equivalent surface area of less than 0.50. The process is characterized in that during formation, (a) pH is maintained from 0.8 to 10; (b) a gelatino-peptizer is present in a concentration of 0 to 50 g per liter of dispersing medium, and (c) pBr having a value of at least 1.8 is maintained during grain nucleation and pBr is maintained at less than 2.4 during growth provided that a gelatin peptizer which is free from calcium ions and has a methionine content of less than 30 micromoles per gram of gelatino-peptizer is present.

Growing community of inventors

Mortsel, Belgium

Ilse Mans