Quantitative Morphometry of Carotid Artery Stenosis: B-Flow Ultrasound Imaging Determines Longer Stenosis-Lengths Compared to Computer-Defined Obstruction Analysis of Angiograms

Introduction: Doppler-Ultrasound (DUS) is an accepted method for quantitative analysis of carotid artery stenosis (CAS). However, at several institutions selective catheter- and magnetic resonance angiography of CAS is still performed before therapeutic intervention, at least in part due to high variability of results of DUS. B-Flow Ultrasound (BFUS), is a Non-Doppler-Ultrasound technique, that utilizes digitally encoded ultrasound to decode and display flow signals. The new imaging modality allows improved signal to noise ratios for improved discrimination at the border between perfused lumen and plaque. Hypoth…