title: Application of an M-line-based backprojected filtration algorithm to triple-cone-beam helical CT.
abstract: To increase the scanning speed of cone-beam CT, a scanning configuration with three pairs of x-ray sources and panel detectors was proposed. In this paper, we apply the M-line-based backprojected filtration algorithm to this scanning configuration and propose a fast implementation for this algorithm. Compared with existing implementations, the advantages of our implementation are as follows: (1) it can directly reconstruct horizontal slices (i.e. the slices perpendicular to the rotation axis), without 3D interpolation; (2) it does not need to calculate the backprojection intervals for any point; (3) it has a high degree of parallelism and is suitable for acceleration on graphic processing units or other parallel systems.
authors.affiliation: The CT Laboratory, School of Mathematics, Capital Normal University, Beijing, People's Republic of China. zhao_yunsong@163.com
authors.forename: Yunsong
authors.initials: Y
authors.lastname: Zhao
authors.forename: Yining
authors.initials: Y
authors.lastname: Zhu
authors.forename: Peng
authors.initials: P
authors.lastname: Zhang
mesh_terms: D000465:Algorithms; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D054894:Spiral Cone-Beam Computed Tomography / Q000379:methods*