Patent ID: 9234856
Filing Date: 2016-01-12
CPC Classification: G01N,G21K

Claim Text:
1. An X-ray apparatus for deriving X-ray absorbing information and X-ray phase information of an object to be detected comprising: a splitting element for splitting spatially X-rays generated by an X-ray generator into X-ray beams; a detector unit for detecting intensities of the X-rays, based on the X-rays split by said splitting element and transmitted through the object, the intensity of the X-rays changing according to an X-ray phase shift during the transmitting of the X-rays through the object, and also changing according to an X-ray position change; and a calculating unit for calculating an X-ray transmittance image as the X-ray absorbing information, and an X-ray differential phase contrast image or an X-ray phase shift contrast image as the X-ray phase information by using the intensities of the X-rays, wherein said splitting element forms X-ray beams by splitting the X-rays, and the X-ray beams have two or more widths at said detector unit, said calculating unit calculates the X-ray absorbing information and the X-ray phase information, based on a changing, in correlation between the changing of the phase of the X-rays and the changing the intensity of the X-rays in said detector unit, the correlation being changed according to the width of X-ray beam, wherein said splitting element comprises a slit array formed by line and space such that a slit width changes periodically between two or more slit widths, and wherein said slit array formed by line and space is formed by arranging alternatingly two slits of different widths.