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Proceedings Paper

Investigation of helix-saddle trajectories for cone-beam CT
Author(s): Yang Lu; Jun Zhao; Erwei Bai; Ge Wang
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Paper Abstract

In this paper, a hybrid helix-saddle trajectory scanning mode is proposed for bolus-chasing CT angiography. By combining the conventional helical trajectory and saddle trajectory appropriately, an optimal curve can be obtained with a capability of localized volumetric imaging at desirable locations. In this context, a condition for the PI-line existence is determined. Then, both filtered-backprojection (FBP), backprojection filtration (BPF) and reduced-scan FBP algorithms are developed. Numerical studies with the 3D Shepp-Logan phantom support the validity and merits of the proposed trajectories and associated algorithms.

Paper Details

Date Published: 15 September 2008
PDF: 10 pages
Proc. SPIE 7078, Developments in X-Ray Tomography VI, 70780I (15 September 2008); doi: 10.1117/12.793728
Show Author Affiliations
Yang Lu, Shanghai Jiao Tong Univ. (China)
Jun Zhao, Shanghai Jiao Tong Univ. (China)
Erwei Bai, The Univ. of Iowa (United States)
Ge Wang, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 7078:
Developments in X-Ray Tomography VI
Stuart R. Stock, Editor(s)

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