Finding Coronary Artery Disease (CAD) isn't a matter of finding narrowing inside the arteries but rather the inability of the arteries to relax and carry more blood flow.
Only later in the disease of our arteries does the Inflammation push into the area where our blood flows (lumen). By then it may be too late. Half of all people find out they have heart disease by dropping dead from it.
As the following drawing shows, the damage begins on the inner wall of the heart called the endocardium and spreads outward to the epicardium. Initially this damage may only show up by blood work (enzymes). Later it shows up on the Electrocardiogram (ECG or EKG).
The inability to increase blood flow on demand can be found using Nuclear Imaging (tests of function - physiology). These changes can be accurately measured using FlemingMethod (FMTVDM), finding problems sooner.
Using FlemingMethod each person's individual treatment benefit or treatment failure can be accurately measured.