PROBLEM TO BE SOLVED: To provide an X-ray optical element that can obtain an X-ray that has a smaller cross-section length and is discretely divided, without performing processing that is hard to be performed due to a high aspect ratio, and to provide an X-ray imaging apparatus with the X-ray optical element.SOLUTION: The X-ray optical element is used, when the X-ray from an X-ray generating means is discretely divided and irradiated to an object to be measured, to radiograph an X-ray phase contrast image. The X-ray optical element includes two or more linear structures whose cross-sectional shape is circular in a short direction perpendicular to a longitudinal one. The two or more linear structures are arranged in the short direction.COPYRIGHT: (C)2013,JPO&INPIT【課題】アスペクト比が高く実施することが困難な加工を施すことなく、断面長が小さく離散的に分割されたX線を得ることが可能となるX線光学素子及び該X線光学素子を有するX線撮像装置を提供する。【解決手段】X線発生手段からのX線を離散的に分割して被測定物に照射し、X線位相コントラスト像を撮像する際に用いられるX線光学素子であって、前記X線光学素子は、2つ以上の線状構造体を備え、該線状構造体の長手方向と直交する短手方向の断面形状が円形状を有し、該2つ以上の線状構造体が前記短手方向に配列されて構成されている。【選択図】 図1
