Image reconstruction in asymmetric fan-beam scans with spatially varying focal lengths

Lifeng Yu, Xiaochuan Pan, Charles A. Pelizzari

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose a generalized algorithm for image reconstruction from data acquired in an asymmetric fan-beam configuration with a spatially varying focal length. This algorithm is an extension of our previous algorithm for fan-beam computed tomography (CT) that involves a shift-variant filtering. As compared to the existing algorithms, the proposed algorithm involves no additional explicit interpolation and eliminates the spatially-variant weighting factor. Therefore, it retains the spatial resolution and is less susceptible to data noise. We performed computer-simulation studies to validate and evaluate the proposed algorithm, and quantitative results demonstrate that the proposed algorithm possesses desirable noise and numerical properties.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsJ.M. Fitzpatrick, M. Sonka
Pages678-684
Number of pages7
Volume5370 I
DOIs
StatePublished - 2004
Externally publishedYes
EventProgress in Biomedical Optics and Imaging - Medical Imaging 2004: Imaging Processing - San Diego, CA, United States
Duration: Feb 16 2004Feb 19 2004

Other

OtherProgress in Biomedical Optics and Imaging - Medical Imaging 2004: Imaging Processing
CountryUnited States
CitySan Diego, CA
Period2/16/042/19/04

Fingerprint

image reconstruction
Image reconstruction
fans
Fans
Tomography
interpolation
Interpolation
tomography
computerized simulation
spatial resolution
shift
Computer simulation
configurations

Keywords

  • Asymmetric configuration
  • Computed tomography (CT)
  • Fan-beam projection
  • Image reconstruction

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Yu, L., Pan, X., & Pelizzari, C. A. (2004). Image reconstruction in asymmetric fan-beam scans with spatially varying focal lengths. In J. M. Fitzpatrick, & M. Sonka (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 5370 I, pp. 678-684) https://doi.org/10.1117/12.535326

Image reconstruction in asymmetric fan-beam scans with spatially varying focal lengths. / Yu, Lifeng; Pan, Xiaochuan; Pelizzari, Charles A.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / J.M. Fitzpatrick; M. Sonka. Vol. 5370 I 2004. p. 678-684.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yu, L, Pan, X & Pelizzari, CA 2004, Image reconstruction in asymmetric fan-beam scans with spatially varying focal lengths. in JM Fitzpatrick & M Sonka (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 5370 I, pp. 678-684, Progress in Biomedical Optics and Imaging - Medical Imaging 2004: Imaging Processing, San Diego, CA, United States, 2/16/04. https://doi.org/10.1117/12.535326
Yu L, Pan X, Pelizzari CA. Image reconstruction in asymmetric fan-beam scans with spatially varying focal lengths. In Fitzpatrick JM, Sonka M, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 5370 I. 2004. p. 678-684 https://doi.org/10.1117/12.535326
Yu, Lifeng ; Pan, Xiaochuan ; Pelizzari, Charles A. / Image reconstruction in asymmetric fan-beam scans with spatially varying focal lengths. Proceedings of SPIE - The International Society for Optical Engineering. editor / J.M. Fitzpatrick ; M. Sonka. Vol. 5370 I 2004. pp. 678-684
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