Title :
Accurate image reconstruction in circular cone-beam computed tomography by total variation minimization: a preliminary investigation
Author :
Sidky, Emil Y. ; Pan, Xiaochuan
Author_Institution :
Dept. of Radiol., Chicago Univ., IL
fDate :
Oct. 29 2006-Nov. 1 2006
Abstract :
The total variation (TV) minimization image reconstruction algorithm for inverting the divergent-beam X-ray transform is applied to image reconstruction in circular cone-beam computed tomography (CT). Reconstructions for the disk phantom are shown and compared with that of projection onto convex sets (POCS). The preliminary results appear to show that TV-minimization yields accurate image reconstructions that are robust against data inconsistencies due to noise or mismatch in the system matrix.
Keywords :
computerised tomography; medical image processing; minimisation; circular cone-beam computed tomography; image reconstruction; projection onto convex sets comparison; total variation minimization; Biomedical imaging; Computed tomography; Discrete Fourier transforms; Enterprise resource planning; Image reconstruction; Image sampling; Minimization methods; Pixel; TV; X-ray imaging;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2006. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-0560-2
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2006.356484
