PROBLEM TO BE SOLVED: To provide an X-ray Talbot imaging apparatus comprising a holding unit capable of appropriately adjusting the angle of a knee joint part with respect to the direction of radiation projection.SOLUTION: An X-ray Talbot imaging apparatus 1 comprises: a subject platform 13 for holding a subject H a radiation generator 11 for projecting radiation onto the subject H and a holding unit 20 for holding a knee joint part of the subject H on the subject platform 13. The holding unit 20 comprises: a first holding section 22 for holding a proximal side of the joint part a second holding section 23 for holding a distal side of the joint part a pivot fixing mechanism B, 26 capable of pivoting the first holding section 22 and second holding section 23 relative to each other within a plane orthogonal to a grating surface of a phase grating 14 and capable of fixing a relative pivot angle θ1 between the first holding section 22 and second holding section 23 and an angle adjustment mechanism A, 25 for changing an angle Θ of the knee joint part of the subject H held by the first holding section 22 and second holding section 23, with respect to the direction of radiation projection.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2017,JPO&INPIT【課題】膝の関節部分の放射線の照射方向に対する角度を的確に調整することが可能な保持ユニットを備えるX線タルボ撮影装置を提供する。【解決手段】X線タルボ撮影装置1は、被写体Hを保持する被写体台13と、被写体Hに放射線を照射する放射線発生装置11と、被写体台13上で被写体Hの膝の関節部分を保持する保持ユニット20を備え、保持ユニット20は、関節部分の体幹側を保持する第1保持部22と、関節部分の末梢側を保持する第2保持部23と、位相格子14の格子面に直交する面内で第1保持部22と第2保持部23とを相対的に回動可能とするとともに第1保持部22と第2保持部23との相対的な回動角θ1を固定することが可能な回動固定機構B、26と、第1保持部22と第2保持部23で保持された被写体Hの膝の関節部分の放射線の照射方向に対する角度Θを変化させるための角度調整機構A、25とを備える。【選択図】図4
