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An exact reconstruction algorithm for triple-source helical cone-beam CT

An exact reconstruction algorithm for triple-source helical cone-beam CT For dynamic CT reconstruction, we have conceptualized a triple-source helical cone-beam scanning mode, and formulated a backprojected-filtration (BPF) algorithm for exact image reconstruction. The algorithm uses data from the three inter-helix PI-arcs related to the inter-helix PI-lines and the minimum detection windows defined for the triple-source configuration. The proof of the formula is based on Tuy's inversion formula and the geometric relations of inter-helix PI-lines. Simulation results demonstrate the validity of the reconstruction algorithm. The BPF algorithm is also extended for the (2N+1)-source helical cone-beam CT. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of X-Ray Science and Technology IOS Press

An exact reconstruction algorithm for triple-source helical cone-beam CT

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Publisher
IOS Press
Copyright
Copyright © 2006 by IOS Press, Inc
ISSN
0895-3996
eISSN
1095-9114
Publisher site
See Article on Publisher Site

Abstract

For dynamic CT reconstruction, we have conceptualized a triple-source helical cone-beam scanning mode, and formulated a backprojected-filtration (BPF) algorithm for exact image reconstruction. The algorithm uses data from the three inter-helix PI-arcs related to the inter-helix PI-lines and the minimum detection windows defined for the triple-source configuration. The proof of the formula is based on Tuy's inversion formula and the geometric relations of inter-helix PI-lines. Simulation results demonstrate the validity of the reconstruction algorithm. The BPF algorithm is also extended for the (2N+1)-source helical cone-beam CT.

Journal

Journal of X-Ray Science and TechnologyIOS Press

Published: Jan 1, 2006

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