Quantitative nuclear cardiology and assessment of areas under risk via adenosine stress protocol-A pictorial assay for cardiologists and cardiovascular surgeons during era of COVID

Abstract
Coronary Artery Disease (CAD) is one of the most important causes of mortality and morbidity in the world. Nevertheless, Myocardial Perfusion Scintigraphy (MPS) using Single-Photon Emission Computed Tomography (SPECT) with radiopharmaceuticals is still widely used for the non-invasive diagnosis of obstructive CAD and functional imaging of the myocardium at stress.