Measurement of temporal resolution in dual source CT

Cynthia H. McCollough, Bernhard Schmidt, Lifeng Yu, Andrew Primak, Stefan Ulzheimer, Herbert Bruder, Thomas G. Flohr

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


This work assesses the temporal resolution of dual-source computed tomography (CT) in a visually intuitive manner. Exploiting the principles of ring artifact creation, a phantom containing a highly attenuating delta function signal (a wire) was rotated at the same speed as the gantry, creating a partial ring artifact where the angular extent of the artifact provides a direct indication of the temporal resolution. A demonstration of the effect of the evaluated 165 and 83 ms nominal temporal resolutions on motion artifacts in cardiac CT is provided using patient data.

Original languageEnglish (US)
Pages (from-to)764-768
Number of pages5
JournalMedical physics
Issue number2
StatePublished - 2008


  • CT technology
  • Motion artifact
  • Temporal resolution

ASJC Scopus subject areas

  • Biophysics
  • Radiology Nuclear Medicine and imaging


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