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Interobserver and intraobserver reliabilities of multislice electrocardiogram-gated spiral computerized tomography in

Dhruvil J Pandya1, Robert C Gilkeson, Jose I Suarez

  • 1Department of Neurology, Medical College of Wisconsin/Froedtert Hospital, Milwaukee, WI 53226, USA.

Clinical Imaging
|March 4, 2008
PubMed

Insights

Cardiac-gated computerized tomography (CGCT) reliably diagnoses aortic atheroma in ischemic stroke patients. This imaging technique shows excellent consistency between and within reader assessments.

Area of Science:

  • Cardiovascular Imaging
  • Neurology
  • Radiology

Background:

  • Aortic atheroma is a significant risk factor for ischemic stroke.
  • Accurate diagnosis of aortic atheroma is crucial for stroke risk stratification and management.
  • Current diagnostic methods may have limitations in assessing aortic atheromatous disease.

Purpose of the Study:

  • To evaluate the diagnostic reliability of cardiac-gated computerized tomography (CGCT) for aortic atheroma.
  • To assess the interreader and intrareader reproducibility of CGCT in identifying aortic atheroma.
  • To establish CGCT as a dependable imaging modality for patients with ischemic stroke.

Main Methods:

  • Prospective study involving 32 patients with ischemic stroke.
  • Two independent radiologists assessed aortic atheroma using CGCT.
  • Interreader and intrareader reliability were quantified using intraclass correlation coefficients (ICCs).

Main Results:

  • High intraobserver ICCs of 0.95 and 0.87 indicate excellent within-reader agreement.
  • A high interrater ICC of 0.93 demonstrates strong agreement between readers.
  • These results confirm the consistency of CGCT in diagnosing aortic atheroma.

Conclusions:

  • Cardiac-gated computerized tomography (CGCT) is a reliable tool for diagnosing aortic atheroma.
  • CGCT exhibits high interreader and intrareader reproducibility, supporting its clinical utility.
  • This modality can be confidently used in the workup of ischemic stroke patients to identify aortic atheromatous disease.
Abstract

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