PROBLEM TO BE SOLVED: To provide an X-ray imaging apparatus and a method of X-ray imaging for obtaining a differential phase image or a phase image with consideration of an absorption effect of X-rays caused by the object, in which the size of the apparatus can be made smaller.SOLUTION: X-rays are spatially split, and an attenuation element is used, in which the transmission amount of X-rays continuously changes in accordance with the position variation amount when the X-rays pass through an object. Transmittance is calculated by using one attenuation element and the other attenuation element that is different from the one attenuation element with respect to increase/decrease amount or increase/decrease tendency in the transmission amount of X-rays. A differential phase image and the like of the object are calculated using the transmittance.COPYRIGHT: (C)2013,JPO&INPIT【課題】 装置を小型化し、かつ、被検知物によるX線の吸収効果を考慮した微分位相像または位相像を得ることが可能なX線撮像装置およびX線撮像方法を提供する。【解決手段】 X線を空間的に分割させ、被検知物に透過させた際に生じるX線の位置変化量に応じて、X線の透過量が連続的に変化するような減衰素子を用いる。一方の減衰素子と、この一方の減衰素子とは透過量の増減量が異なるか、または、増減傾向が異なる他方の減衰素子とを用いて透過率を算出する。この透過率を用いて、被検知物の微分位相像等を演算する。【選択図】 図2
