radionuclide ventriculography

Radionuclide ventriculography has largely been replaced by echocardiography, which is less expensive, and does not require radiation exposure.

In those 11 patients who had been well enough to undergo radionuclide ventriculography, the mean left ventricular ejection fraction was 11.7% (range 6-20%).

It is the main method of cardiac ventriculography (another being radionuclide ventriculography, whose use has largely been replaced by echocardiography).

In radionuclide ventriculography, the radionuclide has the property of circulating through the cardiac chambers, availing for studies of the pumping function of the heart.

Radionuclide ventriculography is a form of nuclear imaging, where a gamma camera is used to create an image following injection of radioactive material, usually Technetium-99m (Tc).

Cardiac ventriculography can be performed with a radionuclide in radionuclide ventriculography or with an iodine-based contrast in cardiac chamber catheterization.

Radionuclide ventriculography is done to evaluate coronary artery disease (CAD), valvular heart disease, congenital heart diseases, cardiomyopathy, and other cardiac disorders.

It is also called radionuclide angiography, radionuclide ventriculography, or gated blood pool imaging, as well as SYMA (SYnchronized Multigated Acquisition) scan.

Left ventricular ejection fraction, which is the most powerful determinant of recurrent cardiac arrest and death, can be estimated at the time of cardiac catheterisation or non-invasively by radionuclide ventriculography or echocardiography.

This imaging technique of radionuclide ventriculography showed abnormalities in the pulsing of the muscular walls of the heart, or wall motion abnormalities, as well as evidence on the amount of blood ejected by the heart at each beat.