1. An X-ray image formation device comprising: an X-ray measurement unit which obtains X-ray detection data by radiating X-rays to a subject in a circular moving manner to circle around the subject and detecting the X-rays; a body movement measurement unit which obtains body movement period data related to a periodic body movement of the subject; a circling controller which controls the circling of the circular moving manner of the radiating X-rays by the X-ray measurement unit based on the body movement period data such that a periodic body movement component in the X-ray detection data obtained for each round of circling of the circular moving X-rays is shifted in the X-ray detection data obtained by the X-ray measurement unit for a plurality of rounds of circling of the circular moving X-rays; and an image formation unit which forms image data of the subject while correcting the periodic body movement component based on the X-ray detection data obtained by the plurality of rounds of circling, wherein the circling controller executes a control to add another round of circling of the circular moving X-rays when the periodic body movement components overlap with each other to cause a component to remain in the X-ray detection data obtained by a predetermined number of rounds of circling set in advance.