<prompt> Carotid aery stenosis in -vivo screening choice isUSGCTMRIDoppler  <response>: Most carotid imaging is now performed with Doppler ultrasound, CTA, MRA performed without exogenous contrast injection such as 2- or 3-dimensional time-of-flight TOF methods or contrast-enhanced MRA CEMRA performed dynamically after an intravenous bolus of gadolinium-based contrast.CEMRA is the most accurate method of carotid stenosis evaluationGrainger and Allison;s diagnostic radiology 6th edition, page 1475 