1. An X-ray imaging apparatus comprising: an X-ray generator to perform X-ray imaging of a target object by generating and irradiating X-rays; an image capturer to capture an image of the target object; an image display to display the image captured by the image capturer; an input part to receive designation of a region for which segmentation imaging is to be performed on the image displayed on the image display; and a controller to control the X-ray generator to perform segmentation imaging of a designated region based on an image of the target object.