<unk>  is an area of nuclear medicine which specialises in imaging to show the functionality of the right and left ventricles of the heart, thus allowing informed diagnostic intervention in heart failure. It involves use of a radiopharmaceutical, injected into a patient, and a gamma camera for acquisition. A<unk>  scan (multigated acquisition) involves an acquisition triggered (gated) at different points of the cardiac cycle.<unk>  scanning is also called equilibrium<unk>  angiocardiography,<unk>  ventriculography (RNVG), or gated blood pool imaging, as well as SYMA scanning (synchronized multigated acquisition scanning). This mode of imaging uniquely provides a cine type of image of the beating heart, and allows the interpreter to determine the efficiency of the individual heart valves and chambers.<unk> /Cine scanning represents a robust adjunct to the now more common echocardiogram. Mathematics regarding acquisition of cardiac output (Q) is well served by both of these methods as well as other inexpensive models supporting ejection fraction as a product of the heart/myocardium in systole. The advantage of a<unk>  scan over an echocardiogram or an angiogram is its accuracy. An echocardiogram measures the shortening fraction of the ventricle and is limited by the user's ability. Furthermore, an angiogram is invasive and, often, more expensive. A<unk>  scan provides a more accurate representation of cardiac ejection fraction.
Radionuclide angiography
Angiography
Microangiography
Magnetic resonance angiography
Angiology
Computed tomography angiography
Digital subtraction angiography
Carbon dioxide angiography