1. A CT scanner for imaging a region of interest of a subject, the CT scanner comprising: a source of X-ray beams, wherein the source is adapted to provide at least one beam for acquiring a CT image of the subject, wherein X-rays emanate from a plurality of emission points that are spaced transversely to a direction of rotation of the X-ray beams around the subject on a line parallel to an axis of rotation of the X-ray beams; a support to support the subject; and a controller to control the X-ray source to illuminate the region of interest with X-rays to acquire stereo image data for the region of interest and wherein the controller is to further control the position of the support responsive to the stereo image data.