Evaluation of ventricular synchrony with equilibrium radionuclide angiography: assessment of variability and accuracy.

Background And Aims: Equilibrium radionuclide angiography (ERNA) has become an established method for assessing cardiac function. However, limited data are available to evaluate ventricular synchrony with ERNA. The aim of this study was to assess the variability and accuracy of ERNA to evaluate ventricular synchrony by means of phase images in healthy individuals and to compare them with a group of subjects with left bundle-branch block (interventricular dyssynchrony, LBBB) and with a group of patients with nonischemic, dilated cardiomyopathy (DCM) (inter- and intraventricular dyssynchrony).

[Non-invasive evaluation of coronary atherosclerotic disease in patients with silent ischemia: usefulness of myocardial perfusion spect, electrical, angiographic, and imaging correlation].

Unlabelled: The objective of the study was to evaluate the usefulness of SPECT myocardial perfusion imaging in the detection of silent ischemia.

Methods: Myocardial perfusion SPECT was performed in 184 asymptomatic patients with diagnosis of stable coronary disease. The protocol consisted of Tc-99m tetrofosmin rest/stress in one day.