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METHOD OF ESTIMATING AND CORRECTION OF DIFFUSION IN MAMMOGRAPHY.
专利权人:
GENERAL ELECTRIC COMPANY
发明人:
ANN-KATHERINE CARTON,REMY KLAUSZ,SERGE MULLER,RAZVAN IORDACHE,GIOVANNI PALMA,SYLVIE PUONG
申请号:
FR1058961
公开号:
FR2966716A1
申请日:
2010.10.29
申请国别(地区):
FR
年份:
2012
代理人:
摘要:
The present invention relates to a method for correcting images of an organ obtained by a mammography system comprising an X-ray emitting source arranged in front of a detector, the member being positioned between the source and the detector, the conditions acquisition of said images being determined by exploiting the characteristics of a pre-exposure image of the organ, said method being characterized in that it comprises the steps of: positioning a mask comprising radio-opaque elements between the organ and the source prior to acquisition of the pre-exposure image, - acquisition of a pre-exposure image of the organ for determining the acquisition conditions of principal images, said image pre-exposure device comprising zones corresponding to the projection of the radiopaque elements; - removal of the mask comprising radiopaque elements so that it is no longer positioned between the organ and the source following the acquisition of the pre-exposure image, - main acquisition of images resulting from the crossing of the organ using X-ray doses greater than the dose used for the acquisition of the pre-exposure image, - extraction of the zones of the pre-exposure image corresponding to the projection of the radiological elements. opaque; determination of the contribution of the X-ray scattered at any point of the image of the organ from said zones extracted from the pre-exposure image.La présente invention concerne un procédé de correction d'images d'un organe obtenues par un système de mammographie comprenant une source émettrice de rayons X disposée en face d'un détecteur, l'organe étant positionné entre la source et le détecteur, les conditions d'acquisition desdites images étant déterminées par exploitation des caractéristiques d'une image de pré-exposition de l'organe, ledit procédé étant caractérisé en ce qu'il comprend les étapes de : - positionnement d'un masque comprenant des éléments radio-opaques entre l'organe et la source préalablement à l'acquisition de l
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