Scanner Utilizing Beam Computed Tomography And Antiscatter Grid
AssigneeThe Regents of the University of Colorado, a body corporate
InventorCem Altunbas
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Abstract
A portable computed tomography (CT) system is provided herein. In an example, the portable CT system includes an O-shaped gantry defining an opening, an x-ray source operably coupled to the O-shaped gantry, a flat panel detector (FPD) coupled to the O-shaped gantry, and an antiscatter grid (ASG) operably coupled to a side of the FPD facing the opening of the O-shaped gantry. The FPD includes an x-ray absorbing sensor layer and a detector pixel array. The ASG includes a plurality of vertical walls defining open-ended channels and formed of a radiation-absorbing material. The open-ended channels are arranged in a geometric pattern pointed toward the x-ray source to receive x-rays in an x-ray emission path from the x-ray source.
Claims20
A portable computed tomography (CT) system comprising:
- an O-shaped gantry defining an opening for a to-be-imaged object to be placed;
- an x-ray source operably coupled to the O-shaped gantry;
- a flat panel detector (FPD) operably coupled to the O-shaped gantry, wherein the FPD comprises an x-ray absorbing sensor layer and a detector pixel array;
- and
- an antiscatter grid (ASG) operably coupled to a side of the FPD facing the opening of the O-shaped gantry, wherein:
- the ASG comprises a plurality of vertical walls defining open-ended channels and formed of a radiation-absorbing material;
- and
- the open-ended channels are arranged in a geometric pattern pointed toward the x-ray source to receive x-rays in an x-ray emission path from the x-ray source.
A computed tomography (CT) scanner system comprising:
- an x-ray source configured to emit x-rays along x-ray emission paths;
- a flat panel detector (FPD) comprising an antiscatter grid (ASG) comprising a plurality of open-ended channels positioned to align at least a subset of the open-ended channels with the x-ray emission paths of the x-rays emitted by the x-ray source, wherein an object to-be-imaged is positioned between the x-ray source and the FPD;
- and
- a controller in operable communication with the FPD to:
- receive data representative of an x-ray image of at least a portion of the object being imaged positioned between the x-ray source and the FPD;
- and
- generate a corrected x-ray image from the data representative of the x-ray image of the object being imaged.
Dependencies are inferred from the claim text.