Which diagnostic test is used specifically to analyze the pumping efficiency of the ventricles?

Radionuclide ventriculography is specifically designed to assess the pumping efficiency of the heart's ventricles. This imaging technique utilizes small amounts of radioactive tracers to visualize the heart's function, particularly focusing on how well the ventricles can pump blood. By measuring the ejection fraction, which indicates the percentage of blood pumped out of the ventricles with each heartbeat, clinicians can evaluate ventricular performance and identify any abnormalities in heart function.

In contrast, other diagnostic tests serve different purposes. An electrocardiogram (ECG) records the electrical activity of the heart and can indicate rhythm issues but does not directly assess ventricle pumping efficiency. Cardiac catheterization is primarily used to examine the coronary arteries and can provide information on blood flow and pressures within the heart, but it is not solely focused on the ventricle's pumping ability. Echocardiography visualizes the heart structure and function using sound waves but is generally less specific for detailed analysis of the ventricles compared to radionuclide ventriculography.