Patent Number: 
Section: claims

1. An X-ray output apparatus, comprising:an X-ray output unit includes a plurality of X-ray sources and configured to output parallel X-ray beams;a shield on which positions that block the output parallel X-ray beams and positions that transmit the parallel X-ray beams are variable; anda control unit configured to:control the output of the parallel X-ray beams in the X-ray output unit and the positions through which the parallel X-ray beams are transmitted in the shield. 2. The X-ray output apparatus according to claim 1,wherein, on the shield, grid-shaped regions are set, andwherein the control unit is further configured to block concurrent transmission of the parallel X-ray beams in positions corresponding to adjacent regions among the grid-shaped regions on the shield. 3. The X-ray output apparatus according to claim 2,wherein the X-ray output unit further includes a plurality of collimators that form the parallel X-ray beams, andwherein the grid-shaped regions on the shield correspond to the plurality of collimators in a one-to-one relation. 4. The X-ray output apparatus according to claim 1,wherein the shield includes a transmission hole to transmit the parallel X-ray beams, andwherein the control unit is further configured to control the positions, through which the X-rays are transmitted, based on a movement of the shield to shift a position of the transmission hole. 5. The X-ray output apparatus according to claim 4,wherein, based on the movement of the shield, the control unit is further configured to control the X-ray output unit to stop the output of the parallel X-ray beams, andwherein, upon completion of the movement of the shield, the control unit is further configured to control the X-ray output unit to output the parallel X-ray beams. 6. The X-ray output apparatus according to claim 4, wherein the transmission hole has a shape including at least a curved part. 7. The X-ray output apparatus according to claim 6, wherein the shape of the transmission hole is an asymmetric shape. 8. The X-ray output apparatus according to claim 7, wherein the asymmetric shape is a shape in which, based on a rectangular shape used as a reference, asymmetry in a corner portion of the rectangular shape is smaller than asymmetry in a center portion of the rectangular shape. 9. The X-ray output apparatus according to claim 6, wherein the shape in the transmission hole includes at least one of an arc shape, a convex shape, a concave shape, or an uneven shape. 10. The X-ray output apparatus according to claim 1,wherein, on the shield, grid-shaped regions are set,wherein the shield includes, in each region of the grid-shaped regions, a shield member opening-closing mechanism to one of open or close shield members to selectively transmit the parallel X-ray beamswherein the control unit is further configured to control the positions through which the parallel X-ray beams are transmitted, based on a state of the shield member opening-closing mechanism of each region of the grid-shaped regions, andwherein the state comprises one of state in which the shield members are open or a state in which the shield members are closed. 11. The X-ray output apparatus according to claim 10, wherein a shape of the grid-shaped regions includes at least a curved part. 12. The X-ray output apparatus according to claim 11, wherein the shape of the grid-shaped regions is an asymmetric shape. 13. The X-ray output apparatus according to claim 11, wherein the shape of the curved part includes at least one of an arc shape, a convex shape, a concave shape, or an uneven shape. 14. The X-ray output apparatus according to claim 10, wherein, based on a change in the positions through which the parallel X-ray beams are transmitted, the control unit is further configured to set all the shield member opening-closing mechanisms in the shield to a state in which the shield members are closed, and then set a shield member opening-closing mechanism corresponding to a specific position in the shield to a state in which the shield members are open. 15. The X-ray output apparatus according to claim 14, wherein the control unit is further configured to control the X-ray output unit to continuously output the parallel X-ray beams. 16. The X-ray output apparatus according to claim 10,wherein, based on a change in the positions through which the parallel X-ray beams are transmitted, the control unit is further configured to control the X-ray output unit to stop the output of the parallel X-ray beams until the change in the positions through which the parallel X-ray beams are transmitted is completed. 17. The X-ray output apparatus according to claim 1, wherein the control unit is further configured to control the X-ray output unit to output the parallel X-ray beams only for a position corresponding to the positions through which the parallel X-ray beams are transmitted in the shield. 18. The X-ray output apparatus according to claim 1,wherein the shield is in an output direction of the parallel X-ray beams in the X-ray output unit, andwherein the shield is in between the X-ray output unit and a subject to which the parallel X-ray beams are radiated. 19. The X-ray output apparatus according to claim 1,wherein the control unit is further configured to control an apparatus to display an image corresponding to control of the output of the parallel X-ray beams and of the positions through which the parallel X-ray beams are transmitted, andwherein the image is based on X-ray detection data of the parallel X-ray beams transmitted through the shield.