An exact reconstruction algorithm for triple-source helical cone-beam CT
An exact reconstruction algorithm for triple-source helical cone-beam CT
Zhao, Jun ; Jiang, Ming ; Zhuang, Tiange ; Wang, Ge
2006-01-01 00:00:00
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.pngJournal of X-Ray Science and TechnologyIOS Presshttp://www.deepdyve.com/lp/ios-press/an-exact-reconstruction-algorithm-for-triple-source-helical-cone-beam-fj60zhjqyD
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.
Journal
Journal of X-Ray Science and Technology
– IOS Press
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