EP 0612024 B1 20011024 - Method for generating tomographic images and device for carrying out the method
Title (en)
Method for generating tomographic images and device for carrying out the method
Title (de)
Verfahren zur Erzeugung von Schichtbildern und Anordnung zur Durchführung des Verfahrens
Title (fr)
Méthode pour la génération d'images tomographiques et dispositif pour la mise en oeuvre du procédé
Publication
Application
Priority
DE 4304332 A 19930213
Abstract (en)
[origin: EP0612024A2] The invention concerns a method of generating tomographic images of an investigated area, through which X-rays are put from multiple radiation source positions, to generate separate individual images. For each individual image, image values, which correspond to the absorption in its image points, are stored. Tomographic images are generated, and in them tomographic image values are derived from the image values of the image points of the individual images, which are assigned geometrically to a tomographic image point. Contrast reversal and pseudo-resolution effects may occur. These are removed by deriving the tomographic image values by means of a weighted summation, in which the weighting with which the image values of the individual images go into the summation becomes smaller as the distance of the radiation source position from a central radiation source position when the relevant individual image was generated becomes greater. <IMAGE>
IPC 1-7
IPC 8 full level
A61B 6/00 (2006.01); A61B 6/02 (2006.01); G06T 1/00 (2006.01); G06T 5/50 (2006.01); H05G 1/60 (2006.01)
CPC (source: EP US)
H05G 1/60 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
DE 4304332 A1 19940818; DE 59409913 D1 20011129; EP 0612024 A2 19940824; EP 0612024 A3 19950712; EP 0612024 B1 20011024; JP H0793525 A 19950407; US 5473653 A 19951205
DOCDB simple family (application)
DE 4304332 A 19930213; DE 59409913 T 19940207; EP 94200229 A 19940207; JP 1657894 A 19940210; US 19541294 A 19940214