Method and device of reconstructing an (n+1)-dimensional...

G - Physics – 06 – T

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G06T 11/00 (2006.01)

Patent

CA 2584900

A method of reconstructing an (n+l)-dimensional image functionf representing a region of investigation (1) comprises the step of determining the image function f from n-dimensional or less dimensional Radon data comprising a plurality of projection functions p.theta.(t) measured corresponding to a plurality of predetermined projection directions (.THETA.), wherein the image function f is determined as a sum polynomials multiplied with values of the projection functions p.theta.(t). An imaging method and an imaging device, like e.g. a computer tomography device, using this reconstruction method are described.

L'invention concerne un procédé destiné à la reconstruction d'une fonction-image ? à (n+1) dimensions représentant une région étudiée (1), consistant à déterminer la fonction-image ? à partir de données Radon à n dimensions ou moins comprenant une pluralité de fonctions de projection p.theta.(t) mesurées correspondant à une pluralité de directions de projection (.THETA.) déterminées, la fonction-image ? étant déterminée sur la base de la somme de polynômes multipliée par les valeurs des fonctions de projection p.theta.(t). L'invention concerne également un procédé d'imagerie et un dispositif d'imagerie, tel qu'un dispositif de tomographie assistée par ordinateur, dans lesquels est utilisé ce procédé de reconstruction.

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