Atherosclerosis starts as a fatty streak w/i the coronary intima, but importantly does *not* correlate with angiographic luminal stenosis and usually represents pre-clinical athero. **(Severe CAC ≠ severe stenosis!!!)**
Taking all plaques in the coronary tree = Agatston Score.
Dr. Agatston (he of South Beach Diet) wrote seminal paper JACC in 1990. (5/n) #AHA18