Key result
Equilibrium radionuclide ventriculography yielded significantly higher values for left ventricular dimensions and volumes compared to echocardiography (p < 0.05), except for ejection fraction.
Why the study?
How do left ventricular systolic function parameters measured by equilibrium radionuclide ventriculography compare to traditional echocardiography in healthy dogs?
Observational (n=12)
How do left ventricular systolic function parameters measured by equilibrium radionuclide ventriculography compare to traditional echocardiography in healthy dogs?
In healthy dogs, equilibrium radionuclide ventriculography yields significantly higher left ventricular dimensions and volumes compared to echocardiography, though ejection fraction measurements remain comparable.
Answers are grounded in this paper and cite their sources.
May preclude interchangeable use of LV dimension values across modalities in healthy dogs; leaves open prospective validation in clinical populations.
Left ventricular systolic function was assessed in 12 healthy dogs with equilibrium radionuclide ventriculography. The results of the analysis were compared to traditional echocardiographic measurements. Left ventricular internal dimensions and volume were measured at the time of end-systole and end-diastole. Ejection fraction--one of the most informative parameters of cardiac function--was calculated in each animal. Values (e.g. EDD, ESD, EDV, ESV) measured by the scintigraphic method were significantly (Student's t-test, p < 0.05) higher than the data obtained by echocardiography. Ejection fraction (EF) was the only parameter that did not differ significantly when comparing the two imaging techniques. The difference between the results of parallel measurements was in inverse ratio to the size of the heart.
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Hetyey et al. (2002) conducted an observational in Healthy (n=12). Equilibrium radionuclide ventriculography vs. Echocardiography was evaluated on Left ventricular internal dimensions, volume, and ejection fraction (p=< 0.05). Equilibrium radionuclide ventriculography yielded significantly higher values for left ventricular dimensions and volumes compared to echocardiography (p < 0.05), except for ejection fraction.
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