Could you explain what is angiogram and how to prevent heart attack?

Angiogram: It is a form of defining of blood vessel anatomy by injecting contrast liquid. By healthy life style, regular exercise, low fat and low cholesterol diet and appropriate medical therapies could reduce heart attack risk.

Imaging study: An angiogram is an imaging study using contrast or dye to visualize a blood vessel, either artery or vein. This can be by direct injection, or indirect as in a ct angiogram or magnetic resonance angiogram (cta or mra). While this can show a blockage, it will not prevent a heart attack.