15 September 2008 Investigation of helix-saddle trajectories for cone-beam CT
Author Affiliations +
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.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yang Lu, Yang Lu, Jun Zhao, Jun Zhao, Erwei Bai, Erwei Bai, Ge Wang, Ge Wang, "Investigation of helix-saddle trajectories for cone-beam CT", Proc. SPIE 7078, Developments in X-Ray Tomography VI, 70780I (15 September 2008); doi: 10.1117/12.793728; https://doi.org/10.1117/12.793728

Back to Top