This is an image from the head looking down through the chest cavity, and the white areas shows calcification on an artery that feeds the heart, which is a pretty much a 1:1 ratio of calcium to plaque. Plaque cannot be measured but the calcium involved in plaque can be, so measuring the calcium provides an accurate picture of any plaque that is causing a blockage.
Vitamin K2 will remove the calcium and the related plaque in a slow controlled way,, most cardiologists will put you on it immediately if you have a scan like the one pictured... It’s good stuff ,, cheap and no Rx needed..