Radiographic imaging devices, systems and methods
AssigneeSimage Oy
InventorsRisto O. Orava, Jouni I. Pyyhtia, Tom G. Schulman, Miltiadis E. Sarakinos, Konstantinos E. Spartiotis
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Abstract
A radiographic imaging system includes a plurality of radiation imaging devices arranged in a plurality of columns. The plurality of columns are tiled together to form a mosaic, with imaging devices in adjacent columns being offset from one another in a columnar direction. A radiation source is provided to irradiate an object to be imaged. An absorption grid is disposed between the radiation source and the mosaic, shielding a portion of the object to be imaged from radiation emitted by the radiation source.
Claims14
A radiographic imaging system comprising:
- a radiation source;
- a plurality of radiation imaging devices arranged in a plurality of columns, said plurality of columns being tiled together to form a mosaic, with imaging devices in adjacent columns being offset from one another in a columnar direction;
- and
- an absorption grid disposed between said radiation source and said mosaic, said absorption grid having a plurality of openings permitting passage of radiation from said radiation source to said mosaic.
A method for imaging accumulated charge values corresponding to respective pixel positions of a radiographic imaging system including a plurality of imaging devices arranged in a plurality of columns, the plurality of columns being tiled together to form a mosaic, with imaging devices in adjacent columns being offset from one another in a columnar direction, and an absorption grid disposed between a radiation source and the mosaic, the absorption grid being capable of movement corresponding to a movement of the mosaic, said method comprising the steps of:
- generating a first image portion from charge values accumulated by the plurality of imaging devices while the mosaic and the absorption grid are in a first position relative to an object being imaged;
- moving the mosaic and the absorption grid to a second position relative to the object being imaged;
- generating a second image portion from charge values accumulated by the plurality of imaging devices while the mosaic and the absorption grid are in said second position;
- and
- combining said first and second image portions into a single image for display.
A mammography system comprising:
- a radiation source;
- a detecting plane including a plurality of radiation imaging devices arranged in a plurality of columns, said plurality of columns being tiled together to form a mosaic, with imaging devices in adjacent columns being offset from one another in a columnar direction;
- and
- a collimator plane disposed between said radiation source and said mosaic, said collimator plane including an absorption grid having a plurality of openings permitting passage of radiation from said radiation source to said mosaic;
- wherein a portion of a breast to be imaged is positioned between said collimator plane and said detecting plane.
Dependencies are inferred from the claim text.