Title :
Extended cone-beam reconstruction using Radon transform
Author :
Kudo, Hiroyuki ; Saito, Tsuneo
Author_Institution :
Inst. of Inf. Sci. & Electron., Tsukuba Univ., Japan
Abstract :
We extend Grangeat´s formula (1991) so that partially measured cone-beam projections can be incorporated into image reconstruction in a successful way. The extension is based on a simple fact that multiple partially measured projections may be combined to compute the 3-D Radon data inaccessible from any single orbit point. Furthermore, we show a few examples for which Grangeat´s formula does not provide a method for exact reconstruction but the extended formula does
Keywords :
Radon transforms; computerised tomography; image reconstruction; medical image processing; 3-D Radon data; Grangeat formula; Radon transform; X-ray CT; cone-beam projections; extended cone-beam reconstruction; image reconstruction; multiple partially measured projections; Computed tomography; Extraterrestrial measurements; Image reconstruction; Object detection; Radiation detectors; Reconstruction algorithms; Visualization;
Conference_Titel :
Nuclear Science Symposium, 1996. Conference Record., 1996 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-3534-1
DOI :
10.1109/NSSMIC.1996.587955
