a positron emission tomography (PET) scan is an imaging test that allows your doctor to check for diseases in your body. The scan uses a special dye containing radioactive tracers. These tracers are either swallowed, inhaled, or injected into a vein in your arm depending on what part of the body is being examined
Answer:
There is not such a thing as a QRS wave and it is just another name for QRS complex which I'm sure you know represents ventricular polarization
Explanation:
Answer:
provides protection to the valves and heart chambers.
Explanation: