Patent ID: 8897413

Claim:
An imaging system, comprising: a radiation source that rotates around an examination region about a longitudinal axis and emits radiation while translating in a direction of the longitudinal axis during a fly-by scan in which the radiation source physically translates in the direction of the longitudinal axis during the scan; a source collimator that translates in coordination with the radiation source and that collimates the emitted radiation during the fly-by scan to form a generally conical shaped radiation beam that traverses the examination region, wherein the source collimator dynamically varies a collimation during the scan so as to increase and decrease a width of the radiation beam in the direction of the longitudinal axis during the scan; a detector array that detects radiation that traverses the examination region and generates signals indicative thereof, wherein the radiation source physically translates in the direction of the longitudinal axis during the scan relative to the detector array; and a reconstructor that reconstructs the signals to generate volumetric image data indicative of the examination region.