CT cone beam image reconstruction with circle and line scan path

Year	Description
1996	Invention patented by Hui Hu on June 24th, 1996. Abstract: A CT cone beam imaging system is provided wherein a source of cone beam radiation and a detector array are mounted for movement with respect to an object, to provide a reconstructed image of the object. Relative movement is established between the cone beam source and the object along a scan path comprising a circular component and a linear component. The source is operated to irradiate the object during such movement to project cone beam data onto the detector, the projected data comprising linear and circular data sets which respectively correspond to the linear and circular components of the scan path. To significantly minimize processing requirements, a subset of data elements is selected from the linear data set, wherein each of the selected data elements is associated with a set of spatial parameters which define spatial regions contained within a hypothetical sphere in the Radon space, but which are not intersected by a Radon shell defined by dimensions of the circular path and the cone beam. First and second sets of image reconstruction data are respectively generated from the subset of the linear data and the circular data, the first and second sets being combined to provide an image of the object.
Source: selected by the editor from original sources.

Invention: CT cone beam image reconstruction with circle and line scan path