Title :
Contributions to cone beam tomography
Author :
Fuhrmann, G. ; Halling, H. ; Moller, Reinhard ; Vell, J. ; Shuang-Ren, Z.
Author_Institution :
Zentrallab. fur Elektronik, Forschungszentrum Julich, Germany
Abstract :
A method for estimating the geometrical parameters of a cone beam tomography system is presented. For that purpose the centroids of the projection of two small spheres are related to the cone beam geometry by nonlinear expressions. The DUD estimation technique was used to estimate the searched parameters by means of the SAS statistical software package. The program is given. In several simulation runs it was proven that the algorithm converges if a fair first estimation is used.<>
Keywords :
computerised tomography; parameter estimation; DUD estimation technique; SAS statistical software package; algorithm convergence; cone beam tomography; geometrical parameters estimation method; medical diagnostic imaging; projection centroids; small spheres; Detectors; Electron beams; Geometry; Image reconstruction; Parameter estimation; Reconstruction algorithms; Scanning electron microscopy; Structural beams; Synchrotrons; Tomography;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Santa Fe, NM, USA
Print_ISBN :
0-7803-0513-2
DOI :
10.1109/NSSMIC.1991.259269
