Congestive heart failure describes a condition that impairs the normal pumping of the heart, caused by myocardial infarction, atherosclerosis, or cardiomyopathy. In CHF, blood is not efficiently ejected from the left ventricle, resulting in volume overload, chamber dilation, and abnormal intracardiac pressure, followed by pulmonary and venous congestion and peripheral edema. Left Ventricular Ejection Fraction will be below 35% and we often see global decrease in elasticity, thin left ventricle muscle, and patchy or mottled tracer uptake.