Journal article
Exact BPF and FBP algorithms for nonstandard saddle curves
Medical physics (Lancaster), Vol.32(11), pp.3305-3312
11/2005
DOI: 10.1118/1.2074207
PMID: 16372411
Abstract
A hot topic in cone-beam CT research is exact cone-beam reconstruction from a general scanning trajectory. Particularly, a nonstandard saddle curve attracts attention, as this construct allows the continuous periodic scanning of a volume-of-interest (VOI). Here we evaluate two algorithms for reconstruction from data collected along a nonstandard saddle curve, which are in the filtered backprojection (FBP) and backprojection filtration (BPF) formats, respectively. Both the algorithms are implemented in a chord-based coordinate system. Then, a rebinning procedure is utilized to transform the reconstructed results into the natural coordinate system. The simulation results demonstrate that the FBP algorithm produces better image quality than the BPF algorithm, while both the algorithms exhibit similar noise characteristics.
Details
- Title: Subtitle
- Exact BPF and FBP algorithms for nonstandard saddle curves
- Creators
- Hengyong Yu - University of IowaShiying Zhao - University of IowaYangbo Ye - University of IowaGe Wang - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Medical physics (Lancaster), Vol.32(11), pp.3305-3312
- DOI
- 10.1118/1.2074207
- PMID
- 16372411
- ISSN
- 0094-2405
- eISSN
- 2473-4209
- Grant note
- EB002667 / NIBIB NIH HHS EB004287 / NIBIB NIH HHS
- Language
- English
- Date published
- 11/2005
- Academic Unit
- Mathematics
- Record Identifier
- 9984240771602771
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