G.e. Medical Systems, S.a.

Vladislav Boutenko

Remy Klausz

Regis Vaillant

Bernard Callier

Thierry Lebihen

Huburt Hacquard

Pascal Cheung-Mon-Chan

Fran&ccedil;ois Kotian

Remy Andre Klausz

Method and apparatus for adjustment of the entrance dose of a radiology apparatus of the type containing a means of X-ray beam emission, a means of detection of the X-ray beam after it has crossed an object having to be visualized, and a means of visualization connected to the means of detection, in which the distance between the means of emission and the object is estimated and, when the distance between the means of emission and the object or the distance between the means of emission and the means of detection varies, the entrance dose is modified according to said distances in order to maintain an appreciably constant equivalent dose in the plane containing the object, the distance between the means of emission and the means of detection being known.

Method and apparatus for control of exposure in radiological imaging systems

For each acquired current image, the displacement of said current image is determined relative to the acquired preceding image in the image acquisition plane, a displaced preceding filtered image is elaborated by spatially displacing the preceding filtered image, taking said displacement into account, and the current filtered image is elaborated by the weighted average between the acquired current image and the displaced preceding filtered image, so as to improve the quality of the images visualized.

Method for reducing X-ray noise

A method for improving the quality of a fluoroscopic image where the image out of an image sequence of images which satisfies a predetermined minimum motion criterion is stored and this stored image is continuously displayed. The images may be acquired using a pulsed cardiac fluoroscope.

Method of improving the quality of a fluoroscopic image

The unsharpness of a radiological image is estimated by four independent passes which recursively implement the same exponential function, and the unsharpness (Id,) estimated for the previous image (IM,) is subtracted from the current image (IM,).

Method for processing a sequence of radiological images of an object

When the display system is calibrated, digital test image delivered as input to system provides a resulting image perceived the human eye as being composed of a plurality individual elements which themselves are composed two grey levels and have the same contrast from element to another.

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Paris, France

Vladislav Boutenko