Preliminary Investigation of a New Algorithm for Image Reconstruction in Half-scan Fan-beam Computed Tomography

Lifeng Yu, Xiaochuan Pan

Research output: Contribution to conferencePaper

Abstract

In this work we discuss a new algorithm for image reconstruction in half-scan fan-beam computed tomography (CT) and compare its performance with that of the conventional halfscan fan-beam filtered backprojection (FFBP) algorithm. Specifically, we investigate quality of reconstructed images when different weighting functions are used to normalize the half-scan data; we evaluate reconstructions from data that are acquired at different numbers of projection views; and we compare the noise properties of the new algorithm and the conventional half-scan FFBP algorithm. Numerical results hi our studies suggest that the new algorithm is generally less susceptible to data noise and aliasing than is the half-scan FFBP algorithm. In particular, the new algorithm yields images with more uniform noise and resolution properties than does the FFBP algorithm. Such uniform properties can have potentially significant implication for estimation- and detection-tasks that are based upon CT images.

Original languageEnglish (US)
Pages979-983
Number of pages5
StatePublished - Dec 1 2002
Event2002 IEEE Nuclear Science Symposium Conference Record - Norfolk, VA, United States
Duration: Nov 10 2002Nov 16 2002

Other

Other2002 IEEE Nuclear Science Symposium Conference Record
CountryUnited States
CityNorfolk, VA
Period11/10/0211/16/02

Keywords

  • Computed tomography
  • Fan-beam projection
  • Half-scan
  • Image reconstruction

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Industrial and Manufacturing Engineering

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  • Cite this

    Yu, L., & Pan, X. (2002). Preliminary Investigation of a New Algorithm for Image Reconstruction in Half-scan Fan-beam Computed Tomography. 979-983. Paper presented at 2002 IEEE Nuclear Science Symposium Conference Record, Norfolk, VA, United States.