Sampling of shifted fan beam projections for region of interest reconstruction

Jeffrey Brokish, Yoram Bresler

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

Abstract

The sampling requirements in fan-beam tomography are well known and provide an estimate of the number of projections required for accurate reconstruction of the entire image. Here we consider the problem of reconstructing a small, off-center subregion of the object. We show that a subregion can be reconstructed from a smaller set of projections, reducing the computation required to form the image. The analysis requires the study of the essential support of the Fourier transform of shifted fan beam projections, which have not previously been analyzed.

Original languageEnglish (US)
Title of host publication2005 IEEE Nuclear Science Symposium Conference Record -Nuclear Science Symposium and Medical Imaging Conference
Pages1867-1870
Number of pages4
DOIs
StatePublished - Dec 1 2005
EventNuclear Science Symposium Conference Record, 2005 IEEE - , Puerto Rico
Duration: Oct 23 2005Oct 29 2005

Publication series

NameIEEE Nuclear Science Symposium Conference Record
Volume4
ISSN (Print)1095-7863

Other

OtherNuclear Science Symposium Conference Record, 2005 IEEE
CountryPuerto Rico
Period10/23/0510/29/05

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ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

Cite this

Brokish, J., & Bresler, Y. (2005). Sampling of shifted fan beam projections for region of interest reconstruction. In 2005 IEEE Nuclear Science Symposium Conference Record -Nuclear Science Symposium and Medical Imaging Conference (pp. 1867-1870). [1596695] (IEEE Nuclear Science Symposium Conference Record; Vol. 4). https://doi.org/10.1109/NSSMIC.2005.1596695