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Dual-source CT for visualization of the coronary arteries in heart transplant patients with high heart rates

Gorka Bastarrika1, Carlo Nicola De Cecco, Maria Arraiza

  • 1Department of Radiology, Clínica Universitaria, Universidad de Navarra, Ave. Pío XII, 36, 31008 Pamplona, Spain. bastarrika@unav.es

AJR. American Journal of Roentgenology
|July 24, 2008
PubMed

Insights

Dual-source CT coronary angiography provides diagnostic quality images in heart transplant recipients, even with high heart rates. Image quality is not negatively impacted by heart rate or its variability during scanning.

Area of Science:

  • Cardiovascular Imaging
  • Radiology
  • Transplant Medicine

Background:

  • Heart transplant recipients often experience elevated heart rates.
  • Assessing coronary artery health is crucial in these patients.
  • Dual-source CT (DSCT) is a key imaging modality.

Purpose of the Study:

  • To evaluate the diagnostic quality of DSCT coronary angiography.
  • To assess image quality in heart transplant recipients with high heart rates.

Main Methods:

  • DSCT coronary angiography performed on 23 heart transplant recipients.
  • Image analysis by two independent readers using a 5-point scale.
  • Data reconstruction across various R-R intervals.

Main Results:

  • High interobserver agreement for image quality assessment (kappa=0.78).
  • Diagnostic image quality achieved in 92.1% of coronary segments.
  • No significant correlation found between heart rate/variability and image quality.

Conclusions:

  • DSCT angiography yields diagnostic quality coronary images in heart transplant recipients.
  • Elevated heart rate and heart rate variability do not adversely affect image quality.
Abstract

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