Title :
Image reconstruction from misaligned truncated helical cone-beam data
Author :
Noo, E. ; Schaller, S. ; Clackdoyle, R. ; White, T.A. ; Roney, T.J.
Author_Institution :
Dept. of Appl. Math., Liege Univ., Belgium
Abstract :
The effects of a misalignment between the rotation and translation axes of the scanner in helical cone-beam CT was investigated. A simple method to estimate the misalignment parameters was proposed and the PHI-method was shown to be suitable to obtain accurate results from misaligned data
Keywords :
Radon transforms; computerised tomography; diagnostic radiography; image reconstruction; medical image processing; DAQ geometry; PHI-method; Radon data; helical cone-beam CT; image reconstruction; long object problem; misaligned truncated helical cone-beam data; misalignment parameters; rebinning; rotation axes; translation axes; Biomedical imaging; Computed tomography; Data acquisition; Detectors; Geometry; Image reconstruction; Mathematics; Object detection; Radiology; X-ray imaging;
Conference_Titel :
Nuclear Science Symposium, 1999. Conference Record. 1999 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5696-9
DOI :
10.1109/NSSMIC.1999.845837
