X-ray imaging apparatus, X-ray imaging method, and X-ray imaging program
US8340243B2 · kind B2 · utility
3Cited by
1References
13Claims
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Key dates
| Filing date | Jul 26, 2011 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Jul 26, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K2201/067
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.