Arteriography is achieved by subtracting the systolic data, where the arteries appear dark, from the diastolic data set, where the arteries appear bright.
The computer can calculate for the physician the patient's ejection fraction, end diastolic volume, wall motion, end systolic volume, myocardial thickening, shortening, and contractility.
When blood flow is nil (cuff pressure exceeding systolic pressure) or unimpeded (cuff pressure below diastolic pressure), cuff pressure will be essentially constant.
