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US 2014/0177789 A1Published application
Grating-based differential phase contrast imaging system with adjustable capture technique for medical radiographic imaging
OwnerPavlo Baturin, Mark E. Shaferinventors
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Abstract
Embodiments of methods and apparatus are disclosed for obtaining a phase-contrast digital radiographic imaging system and methods for same that can include an x-ray source for radiographic imaging; a beam shaping assembly including a collimator and a source grating, an x-ray grating interferometer including a phase grating, and an analyzer grating; and an x-ray detector, where the phase-contrast digital radiographic imaging system and methods are adjustable for different mean energies of the x-ray source.
Claims19
A digital radiographic (DR) phase-contrast imaging (PCI) system comprising:
- an x-ray source for radiographic imaging;
- a beam shaping assembly comprising a source grating G0;
- an x-ray grating interferometer comprising,
- a phase grating G1, and
- an analyzer grating G2;
- and
- an area x-ray detector;
- where the beam shaping assembly and x-ray grating interferometer are adjustable for different mean energies of the x-ray source.
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A method, comprising:
- providing an x-ray generator for radiographic imaging;
- providing a beam shaping assembly comprising a beam limiting apparatus and a source grating G0;
- providing an x-ray grating interferometer comprising a phase grating G1, and an analyzer grating G2;
- offsetting a pitch of the analyzer grating G2 relative to a pitch of an interference pattern produced by the phase grating G1 at a prescribed distance from the phase grating G1;
- and
- adjusting the beam shaping assembly and the x-ray grating interferometer responsive to different mean energies of a beam configured to pass the beam shaping assembly.
3 more elements
Dependencies are inferred from the claim text.