Title :
Reduction of the streak artifacts in circular cone beam CT using scanograms
Author :
Zou, Yu ; Zamyatin, Alexander A. ; Chiang, Beshan S. ; Silver, Michael D.
Author_Institution :
Toshiba Med. Res. Inst. USA Inc., Vernon
fDate :
Oct. 26 2007-Nov. 3 2007
Abstract :
We propose a method to estimate line data from scanogram in a CT scan. Combining the circle data with the estimated line data, we can reconstruct the volumetric images by use of an exact filtered backprojection or backprojection filtration algorithm for circle-line trajectories. The results show that the streak artifacts are reduced significantly compared to that of circle-only reconstruction.
Keywords :
computerised tomography; image reconstruction; medical image processing; circle-line trajectory; circular cone beam CT; filtered backprojection; scanogram; streak artifact reduction; volumetric image reconstruction; Band pass filters; Computed tomography; Detectors; Filtration; Frequency; Image reconstruction; Interpolation; Nuclear and plasma sciences; Particle beams; Silver;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0922-8
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2007.4436890
