A duplex ultrasound is a non-invasive approach to detecting and quantifying the narrowing and blockage while in the blood vessels. It can be performed by a experienced sonographer and is confirmed by a Radiologist. This is a pain-free procedure carried out over a sofa and usually takes 1-two several hours. https://sgvasculargrp.com/medical-condition/peripheral-arterial-disease/icon-peripheral-arterial-disease-pad-2-3/