Patent ID: 8379791

Claim:
An apparatus for acquiring tomographic projection data at a plurality of angular positions relative to an object disposed in an examination region, the apparatus comprising: a rotating gantry which rotates around a central axis of rotation, wherein the examination region lies within the rotating gantry and includes a transaxial plane which is perpendicular to the central axis of rotation; a radiation source mounted on the rotating gantry for rotation about the examination region; a radiation sensitive detector mounted on the rotating gantry for rotation about the examination region to detect radiation emitted by the source, wherein the radiation has traversed the examination region; wherein at least one of the source and a transverse center of the detector is transversely displaced from a center of a transverse field of view in the transaxial plane during acquisition of the projection data by a variable amount of displacement; and wherein the variable amount of transverse displacement is determined at least in part based on a size of the object in the transverse field of view.