In a method and computed tomography (CT) apparatus for the reconstruction of images from CT measured values acquired by spiral scan that are respectively allocated to one of a number of projection angles and a z-position on the longitudinal axis of the spiral scan, for each projection angle, all measured...http://www.google.com.tw/patents/US6252926?utm_source=gb-gplus-share專利 US6252926 - Method for the reconstruction of images from measured values acquired with a CT apparatus by spiral scan and CT apparatus for the implementation of the method