Patent Number: 
Section: claims

1. A radiation phase-contrast imaging device comprising:an imaging system;the imaging system being composed ofa radiation source configured to irradiate radiation,a grating in which an absorber absorbing the radiation and extending in one direction is arranged in a direction perpendicular to the one direction, anda detection unit configured to detect a self-image of the grating generated by Talbot interference on a detection surface in which a detection element configured to detect the radiation is arranged in a matrix in a plane; anda position changing unit configured to change a relative position of the imaging system and an object such that a projection of the object moves linearly on the detection surface while keeping s positional relation of the radiation source, the grating, and the detection unit,wherein a longitudinal direction which is a direction along which the detection element on the detection surface of the detection unit is arranged is inclined with respect to an extending direction of the absorber of the grating, andwherein the imaging device further comprises a self-image generation unit configured to be operated when imaging is continuously executed while moving the imaging system and generate a plurality of self-images different in a reflecting position of a dark line of the grating based on detection data output from each portion of the detection surface. 2. The radiation phase-contrast imaging device according to claim 1,wherein a lateral direction which is a direction along which the detection element on the detection surface of the detection unit is arranged is inclined with respect to an arrangement direction of the absorbers of the grating. 3. The radiation phase-contrast imaging device according to claim 1,wherein the detection surface of the detection unit includes a rectangular region configured such that an array in which a stripe-shaped self-image of one cycle is reflected and the detection element is arranged in one row in the longitudinal direction is arranged in a lateral direction. 4. The radiation phase-contrast imaging device according to claim 1, further comprising a radiation source controller configured to make the radiation source irradiate the radiation every time a projection of the object moves by an amount corresponding to one detection element on the detection surface. 5. The radiation phase-contrast imaging device according to claim 1,wherein the grating includes a region in which an absorber absorbing the radiation and extending in the one direction is arranged in a direction perpendicular to the one direction, and a region in which an absorber absorbing the radiation and extending in an intersecting direction intersecting with the one direction are arranged in a direction perpendicular to the intersecting direction, andwherein both the regions are arranged in a direction along which the projection of the object moves on the detection surface. 6. A radiation phase-contrast imaging device comprising:an imaging system;the imaging system is composed ofa radiation source configured to irradiate radiation,a grating in which an absorber absorbing the radiation and extending in one direction is arranged in a direction perpendicular to the one direction,a detection unit configured to detect a self-image of the grating generated by Talbot interference on a detection surface on which a detection element configured to detect the radiation is arranged in a matrix in a plane; anda position changing unit configured to change a relative position of the imaging system and an object such that a projection of the object moves linearly on the detection surface while keeping a positional relation of the radiation source, the grating, and the detection unit,wherein a longitudinal direction which is a direction along which the detection element on the detection surface of the detection unit is arranged coincides with an extending direction of the absorber of the grating and is inclined with respect to a moving direction of the projection of the object on the detection surface, andwherein the imaging device further comprises a self-image generation unit configured to be operated when imaging is continuously executed while moving the imaging system and generate a self-image in which a center point of the detection element is arranged at equal intervals on a line segment perpendicular to a moving direction of the imaging system. 7. The radiation phase-contrast imaging device according to claim 6,wherein a lateral direction which is a direction along which the detection element on the detection surface of the detection unit is arranged does not perpendicularly intersect with the moving direction of the projection of the object on the detection surface. 8. The radiation phase-contrast imaging device according to claim 6,wherein on the detection surface of the detection unit, an oblique direction along which it advances by an amount corresponding to one detection element in a lateral direction as it advances from a given detection element in the longitudinal direction by an amount corresponding to three detection elements coincides with the moving direction of the projection of the object on the detection surface. 9. The radiation phase-contrast imaging device according to claim 8, further comprising a radiation source controller configured to make the radiation source execute irradiation of the radiation every time the projection of the object on the detection surface moves by 1/101/2 times a width of one detection element. 10. A radiation phase-contrast imaging device comprising:an imaging system;the imaging system is composed ofa radiation source configured to irradiate radiation,a grating in which an absorber absorbing the radiation and extending in one direction is arranged in a direction perpendicular to the one direction, anda detection unit configured to detect a self-image of the grating generated by Talbot interference on a detection surface for detecting the radiation; anda position changing unit configured to change a relative position of the imaging system and an object such that a projection of the object moves linearly on the detection surface while keeping a positional relation of the radiation source, the grating, and the detection unit,wherein an array configured by detection elements arranged in a inclined direction which is a direction inclined with respect to a longitudinal direction is two-dimensionally arranged by being arranged in a lateral direction perpendicular to the longitudinal direction on the detection surface of the detection unit, andwherein the inclined direction is inclined with respect to an extending direction of the absorber of the grating, andwherein the imaging device further comprises a self-image generation unit configured to be operated when imaging is continuously executed while moving the imaging system and generate a plurality of self-images different in a reflecting position of a dark line of the grating based on detection data output from each portion of the detection surface.