A calcium score gives a good indication of plaque burden in the coronary arteries. In my case it was initiated by my PCP at age 70, and the high result determined that I should be on a statin. It also caused me to redouble my efforts to reduce my risk thru a heart-healthy diet and exercise. Cleveland Clinic publishes an informative 80-page report on Coronary Artery Disease which was helpful for me in understanding this disease. 877-300-0253 to order. Mayo Clinic has not published anything similar to my knowledge.