This 30-45 minuite test evaluates how well the main chamber of the patient's heart (left ventricle) pumps.
Electrodes are attached to various sites on the patient body.
The patient lies on his back, and a mildly radioactive contrast medium is injected into a vein. A scintillation camera records the contrast medium's passage through his heart and is then synchronized with an electrocardiogram to correlate subsequent images with ECG wavefroms. The patient must remain still during scanning.