A Feldkamp-type approximate algorithm for helical multislice CT using extended scanning helix.
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.
Liang
Hongzhu
H
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore.
Zhang
Cishen
C
Yan
Ming
M
D000465:Algorithms; D019047:Phantoms, Imaging; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods; D036542:Tomography, Spiral Computed / Q000379:methods*