| 摘要 |
<p>A computed tomography imaging system includes a source of a conical beam of radiation and a two-dimensional detector array arranged on opposite sides of an axis of rotation. Projection data is acquired in a conventional manner as the source and detector array make a full rotation about an object. A conventional half-scan image reconstruction algorithm is applied to the projection data at a plurality of different center-view angles to produce a plurality of sub-images. Image segments (62, 68, 72), which are centered in each sub-image along the axis of the respective center-view angle, are selected and combined to form a cross-sectional image (74) of the object. The regions of each sub-image preferably are defined by a weighting function. <IMAGE></p> |
