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A reconstruction method for cone-beam differential x-ray phase-contrast computed tomography

Fu, Jian; Velroyen, Astrid; Tan, Renbo; Zhang, Junwei; Chen, Liyuan; Tapfer, Arne; Bech, Martin LU and Pfeiffer, Franz (2012) In Optics Express 20(19). p.21512-21519
Abstract
Most existing differential phase-contrast computed tomography (DPC-CT) approaches are based on three kinds of scanning geometries, described by parallel-beam, fan-beam and cone-beam. Due to the potential of compact imaging systems with magnified spatial resolution, cone-beam DPC-CT has attracted significant interest. In this paper, we report a reconstruction method based on a back-projection filtration (BPF) algorithm for cone-beam DPC-CT. Due to the differential nature of phase contrast projections, the algorithm restrains from differentiation of the projection data prior to back-projection, unlike BPF algorithms commonly used for absorption-based CT data. This work comprises a numerical study of the algorithm and its experimental... (More)
Most existing differential phase-contrast computed tomography (DPC-CT) approaches are based on three kinds of scanning geometries, described by parallel-beam, fan-beam and cone-beam. Due to the potential of compact imaging systems with magnified spatial resolution, cone-beam DPC-CT has attracted significant interest. In this paper, we report a reconstruction method based on a back-projection filtration (BPF) algorithm for cone-beam DPC-CT. Due to the differential nature of phase contrast projections, the algorithm restrains from differentiation of the projection data prior to back-projection, unlike BPF algorithms commonly used for absorption-based CT data. This work comprises a numerical study of the algorithm and its experimental verification using a dataset measured with a three-grating interferometer and a micro-focus x-ray tube source. Moreover, the numerical simulation and experimental results demonstrate that the proposed method can deal with several classes of truncated cone-beam datasets. We believe that this feature is of particular interest for future medical cone-beam phase-contrast CT imaging applications. (C) 2012 Optical Society of America (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Optics Express
volume
20
issue
19
pages
21512 - 21519
publisher
OSA
external identifiers
  • wos:000308865600090
  • scopus:84866241141
ISSN
1094-4087
DOI
10.1364/OE.20.021512
language
English
LU publication?
yes
id
16473226-4f64-484a-af79-125b7eb6867f (old id 3146797)
date added to LUP
2012-11-26 09:43:59
date last changed
2017-09-24 03:51:17
@article{16473226-4f64-484a-af79-125b7eb6867f,
  abstract     = {Most existing differential phase-contrast computed tomography (DPC-CT) approaches are based on three kinds of scanning geometries, described by parallel-beam, fan-beam and cone-beam. Due to the potential of compact imaging systems with magnified spatial resolution, cone-beam DPC-CT has attracted significant interest. In this paper, we report a reconstruction method based on a back-projection filtration (BPF) algorithm for cone-beam DPC-CT. Due to the differential nature of phase contrast projections, the algorithm restrains from differentiation of the projection data prior to back-projection, unlike BPF algorithms commonly used for absorption-based CT data. This work comprises a numerical study of the algorithm and its experimental verification using a dataset measured with a three-grating interferometer and a micro-focus x-ray tube source. Moreover, the numerical simulation and experimental results demonstrate that the proposed method can deal with several classes of truncated cone-beam datasets. We believe that this feature is of particular interest for future medical cone-beam phase-contrast CT imaging applications. (C) 2012 Optical Society of America},
  author       = {Fu, Jian and Velroyen, Astrid and Tan, Renbo and Zhang, Junwei and Chen, Liyuan and Tapfer, Arne and Bech, Martin and Pfeiffer, Franz},
  issn         = {1094-4087},
  language     = {eng},
  number       = {19},
  pages        = {21512--21519},
  publisher    = {OSA},
  series       = {Optics Express},
  title        = {A reconstruction method for cone-beam differential x-ray phase-contrast computed tomography},
  url          = {http://dx.doi.org/10.1364/OE.20.021512},
  volume       = {20},
  year         = {2012},
}