title: A Feldkamp-type approximate algorithm for helical multislice CT using extended scanning helix.
abstract: In this paper, a Feldkamp-type approximate algorithm is proposed for helical multislice Computed Tomography (CT) image reconstruction. For reconstruction of practically required planar transversal image slices, the algorithm proposes a new short scan helical trajectory which satisfies Tuy's exact reconstruction condition. A planar slice reconstructed using this new trajectory has potential to be exactly reconstructed. This method improves the approximate helical reconstruction in terms of artifacts reduction and efficiency enhancement.
authors.affiliation: School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore.
authors.forename: Hongzhu
authors.initials: H
authors.lastname: Liang
authors.forename: Cishen
authors.initials: C
authors.lastname: Zhang
authors.forename: Ming
authors.initials: M
authors.lastname: Yan
mesh_terms: D000465:Algorithms; D019047:Phantoms, Imaging; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods; D036542:Tomography, Spiral Computed / Q000379:methods*