An X-ray imaging apparatus includes an X-ray source irradiating X-rays to a subject from a plurality of locations； an X-ray detector detecting X-rays irradiated from the plurality of locations and passing through the subject； and a controller configured to obtain a plurality of projected images corresponding to the plurality of locations from the detected X-rays, create a plurality of sectional images by reconstructing the plurality of projected images, determine at least one of the plurality of sectional images having a preset feature in a region of interest, and insert an indicator to indicate the feature to the at least one sectional image.
