A method for zinger artifact reduction in high-energy x-ray computed tomography

J. C E Mertens, J. J. Williams, Nikhilesh Chawla

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In x-ray imaging, the interaction of stray x-rays with an imaging sensor may produce speckle-type noise (i.e. zingers) which produces artifacts in tomography reconstructions. Zinger reduction can be accomplished through detector design and image filtering. A standard method for zinger filtering exists but produces many false positives and high discrepancy with the true signal. An approach is proposed through selective temporal frame averaging in which zinger noise is removed with improvements over the standard method. The accuracy of the proposed approach is compared with a standard approach using simulated projections of a phantom containing known artificial zinger and locations density.

Original languageEnglish (US)
Pages (from-to)82-92
Number of pages11
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume800
DOIs
StatePublished - Nov 11 2015

Keywords

  • Detector
  • Filter
  • Noise
  • X-ray
  • Zinger

ASJC Scopus subject areas

  • Instrumentation
  • Nuclear and High Energy Physics

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