TY - JOUR T1 - Carotid Near-Occlusion: A Comprehensive Review, Part 1—Definition, Terminology, and Diagnosis JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 2 LP - 10 DO - 10.3174/ajnr.A4432 VL - 37 IS - 1 AU - E. Johansson AU - A.J. Fox Y1 - 2016/01/01 UR - http://www.ajnr.org/content/37/1/2.abstract N2 - SUMMARY: Carotid near-occlusion is distal ICA luminal collapse beyond a tight stenosis, where the distal lumen should not be used for calculating percentage stenosis. Near-occlusion with full ICA collapse is well-known, with a threadlike lumen. However, near-occlusion without collapse is often subtle and can be overlooked as a usual severe stenosis. More than 10 different terms have been used to describe near-occlusion, sometimes causing confusion. This systematic review presents what is known about carotid near-occlusion. In this first part, the foci are definition, terminology, and diagnosis.ECAexternal carotid artery ER -