<unk>  or scanning (also referred to as<unk>  or MPS) is a nuclear medicine procedure that illustrates the function of the heart muscle (myocardium). It evaluates many heart conditions, such as coronary artery disease (CAD), hypertrophic cardiomyopathy and heart wall motion abnormalities. It can also detect regions of<unk>  infarction by showing areas of decreased resting<unk> . The function of the myocardium is also evaluated by calculating the left ventricular ejection fraction (LVEF) of the heart. This scan is done in conjunction with a cardiac stress test. The diagnostic information is generated by provoking controlled regional ischemia in the heart with variable<unk> . Planar techniques, such as conventional scintigraphy, are rarely used. Rather, single-photon emission computed tomography (SPECT) is more common in the US. With multihead SPECT systems,<unk>  can often be completed in less than 10 minutes. With SPECT, inferior and posterior abnormalities and small areas of infarction can be identified, as well as the occluded blood vessels and the mass of infarcted and viable myocardium. The usual isotopes for such studies are either Thallium-201 or Technetium-99m.
Myocardial perfusion imaging
Ballistocardiography
Fractional flow reserve
Magnetocardiography
Cardiac PET
Coronary CT angiography
Impedance cardiography
Pulmonary angiography