Off-center tomosynthesis

G - Physics – 01 – N

Patent

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Details

G01N 23/083 (2006.01) G01N 23/04 (2006.01) G01R 31/302 (2006.01)

Patent

CA 2441881

The present invention is directed to an apparatus and method for acquiring off- axis X-ray images of a plurality of regions of interest. The apparatus includes a source (112) producing a beam of radiation, a surface (120) to support at least a subset of the plurality of regions of interest (A, B, C), and an X-ray detector (130) located to simultaneously receive portions of the beam that have passed through the subset of the plurality of regions of interest. The X-ray detector produces from the received portions of the beam an electronic representation of an image for each region of interest in the subset of the plurality or regions of interest. Any combination of the source, the surface, and the detector may be moveable to position the regions of interest within the beam.

La présente invention concerne un appareil et un procédé permettant d'acquérir des images radiologiques hors-axe d'une pluralité de zones à étudier. L'appareil comprend une source (112) produisant un faisceau de rayonnement, une surface (120) servant de support à au moins un sous-ensemble de la pluralité de zones à étudier (A, B, C), et un détecteur à rayons X (130) positionné de manière à recevoir simultanément des parties du faisceau qui passe à travers le sous-ensemble de la pluralité de zones à étudier. Le détecteur à rayons X produit, à partir des parties de faisceau reçues, une représentation électronique d'une image pour chaque région à étudier dans le sous-ensemble de la pluralité de zones à étudier. Toute combinaison de la source, la surface, et du détecteur peut être déplacée de sorte à positionner les zones à étudier à l'intérieur du faisceau.

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