| 摘要 |
PURPOSE: An x-ray phase difference image obtaining method is provided to minimize a distance between an x-ray light source and a detector in order to maintain the brightness of the light source, and to allow the coherence of the light source to satisfy a condition for obtaining a phase image. CONSTITUTION: An x-ray phase difference image obtaining method includes: a step of mounting a specimen (50) between a knife-edge filter (30) and a light source grating (20), and precisely adjusting the specimen in an optical axial direction; a step of storing an absorption image detected by a detector (60) after removing the knife-edge filter; a step of moving the knife-edge filter certain distances in an X- and Y-axial direction perpendicular to the optical axial direction after returning the knife-edge filter to an initial position, and storing an image detected by the detector; and a step of digitizing the absorption image and the image obtained by moving the knife-edge filter, implementing a data processing process on the images, and then obtaining a final image. |
