Title :
Evaluation of helical cone-beam CT reconstruction algorithms
Author :
Köhler, Th ; Bontus, C. ; Brown, K. ; Heuscher, D. ; Grass, M. ; Shechter, G. ; Proksa, R.
Author_Institution :
Philips Res. Lab., Hamburg, Germany
Abstract :
In this work, three different reconstruction algorithms for short scan helical cone-beam CT are compared: Two approximate algorithms, PI-SLANT and WVEDGE-PI, with the recently published exact algorithm by Katsevich. It is shown that WEDGE-PI performs as well as the exact method for a 64 row scanner and almost as well for a 128 row scanner. PI-SLANT produces significantly more artifacts, in particular for the 128 row scanner.
Keywords :
computerised tomography; 128 row scanner; 64 row scanner; PI-SLANT; WVEDGE-PI; helical cone-beam CT; reconstruction algorithms; Biomedical imaging; Computed tomography; Geometry; Image quality; Image reconstruction; Laboratories; Reconstruction algorithms; Research and development; X-ray detection; X-ray detectors;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2002 IEEE
Print_ISBN :
0-7803-7636-6
DOI :
10.1109/NSSMIC.2002.1239539
