Grading of proximal internal carotid artery (ICA) stenosis by Doppler/duplex ultrasound (DUS) and computed tomographic angiography (CTA): correlation and interrater reliability in real-life practice - Oliver Matz; Omid Nikoubashman; Parajuli Rajkumar; Andreas Keuler; Martin Wiesmann; Jörg B. Schulz; Arno Reich (Acta Neurologica Belgica, 2017)