Sulfur is in the 16th group/family on the Periodic Table which is called Chalcogen. 2 people found this useful.
A cardiac perfusion scan measures the amount of blood in your heart muscle at rest and during exercise. It is often done to find out what may be causing symptoms like angina (such as chest pain or pressure).
An EF is a percentage of blood that is pumped out of the heart during each beat. Ejection fraction is a key indicator of heart health. Physicians assess the extent of heart muscle damage by measuring the left ventricular ejection fraction. Common tests to determine EF include an echocardiogram and nuclear stress test. Cardiac MRI is a new method that is being used more frequently to measure EF as well.