Patent ID: 6324247
Filing Date: 2001-11-27
Classification: A61B,G06T,Y10S

Abstract:
A method for reconstructing an image from a set of projection data acquired in a computed tomographic (CT) scan of an object, comprising the steps of:selecting a pitch in a range between a zero pitch and an HS pitch;helically scanning the object with a CT imaging system having a multislice detector and a moving radiation source, at the selected pitch, to acquire projection data;helically interpolating the acquired projection data to generate or synthesize projections in a plane of reconstruction for a source angle .beta. spanning a partial scan angle;applying a partial scan weight W.sub.PS written as: ##EQU11##to the generated or synthesized projections in a plane of reconstruction, where .gamma. is a fan angle, .beta. a source angle, and .GAMMA. a maximum fan angle; andfiltering and backprojecting the weighted projections.