An X-ray computer tomography apparatus which performs prep scanning prior to main scanning to acquire information for use in reconstruction of a tomographic image for diagnosis, the main scanning including rotary scanning around a rotation axis, and axial scanning along the rotation axis, the X-ray computer...http://www.google.com.au/patents/US7221729?utm_source=gb-gplus-sharePatent US7221729 - X-ray computer tomography apparatus
