Title

Exact Fbp Reconstruction For Dynamic Pitch Helical Cone Beam Ct

Keywords

Computed tomography; Dynamic pitch; Exact reconstruction; Filtered backprojection; Wide cone helical

Abstract

We present an extension of the exact filtered back-projection (FBP) formula for wide cone helical trajectories to more general helical trajectories. In particular, we show that the original formula presented in [1] applies for any helical trajectory in which the velocity plus derivative of acceleration does not change sign during the acquisition. This condition allows for helical trajectories in which the pitch changes dynamically during the scan, and as a byproduct, permits gantry tilt without any additional interpolation steps. © 2004 IEEE.

Publication Date

12-1-2004

Publication Title

IEEE Nuclear Science Symposium Conference Record

Volume

5

Number of Pages

3299-3302

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

23844526974 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/23844526974

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