Method for Calibrating the Position of a Laser Fan Beam Relative to the Projection Geometry of an X-Ray Device and X-Ray Device
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Accused Products
Abstract
For detecting the relative location of a laser or laser fan beam relative to the x-ray geometry of an x-ray device, a method for calibrating the position of the laser fan beam generated by a laser in relation to the projection geometry of the x-ray device is proposed. The x-ray device comprises an x-ray imaging system featuring an x-ray source and an x-ray detector. The x-ray source, the x-ray detector, the laser, and an imaging facility are arranged on a support. An optical x-ray calibration phantom is used for the calibration. The position of the imaging facility relative to the projection geometry is determined. The position of the laser fan beam relative to the imaging facility is determined. The position of the laser fan beam relative to the projection geometry is reconstructed.
13 Citations
33 Claims
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1-15. -15. (canceled)
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16. A method for calibrating a position of a laser fan beam generated by a laser relative to a projection geometry of an x-ray device having an x-ray image system and an imaging device, comprising:
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determining a position of the imaging device relative to the projection geometry; determining a position of the laser fan beam relative to the imaging device; and reconstructing the position of the laser fan beam relative to the projection geometry. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. An x-ray device, comprising:
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an x-ray imaging system comprising an x-ray source and an x-ray detector that records an x-ray image of an object; a laser that generates a laser fan beam for illuminating the object; an imaging device that records an image of the object; and a computation unit that; determines a position of the imaging device relative to a projection geometry of the x-ray device; determines a position of the laser fan beam relative to the imaging device; and calibrates a position of the laser fan beam relative to the projection geometry by reconstructing the position of the laser fan beam relative to the projection geometry. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33)
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Specification