Cor Vasa 2002, 43(6):281-284
Reproducibility of equilibrium rest radionuclide gated ventriculography in patients with coronary artery disease
- 1 Oddělení nukleární medicíny
- 2 Kardiochirurgická klinika
- 3 Oddělení analýz a zdravotní statistiky, Fakultní nemocnice Hradec Králové, Česká republika
Aim:
We evaluated the reproducibility of ejection fraction by rest equilibrium radionuclide EKG gated ventriculography in patients with coronary artery disease.
Material and method:
14 patients with coronary artery disease (12 men, 2 women) underwent two studies separated by an interval of 30 minutes. The radiopharmaceutical used for equilibrium EKG gated ventriculography was technetium 99m in vivo labeled red blood cells. Mean activity of technetium 99m was 750 MBq. A large-field of view Helix Elscint digital scintillation camera was used. A low-energy collimator with good sensitivity and parallel holes was used. The peak of gamma emission was 140 keV, window 10%, matrix 64 × 64. The view was left anterior oblique (LAO). 500 cardiac cycles were stored, 24 frames per cardiac cycle. Acquisition time was 15-20 min. After 30 minutes, we started the next EKG gated ventriculography with the same patient and same acquisition parameters.
Conclusion:
There were differences in the ejection fraction between these two studies 1.6% ± 1.1% (SD). Pearson's coefficient of correlation was 0.988. Our conclusion is comparable to literary data.
Keywords: Radionuclide ventriculography; Reproducibility
Published: June 1, 2002 Show citation