Reduction of the streak artifacts in circular cone beam CT using scanograms

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 tha...

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Bibliographic Details
Main Authors: Yu Zou, Zamyatin, A.A., Chiang, B.S., Silver, M.D.
Format: Conference Proceeding
Language:English
Subjects:
Band pass filters
Computed tomography
Detectors
Filtration
Frequency
Image reconstruction
Interpolation
Nuclear and plasma sciences
Particle beams
Silver
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Description
Summary: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.
ISSN:1082-3654
2577-0829
DOI:10.1109/NSSMIC.2007.4436890