Defining Near Occlusion With Full Collapse on CTA

Objective: Carotid near occlusion with full collapse, the severe subset of near occlusions (Fig. 1), has been associated with a high risk of early pre-operative stroke recurrence.1,2 Full collapse has traditionally been defined as a threadlike appearance of the distal internal carotid artery (ICA).2 Recently, a measurement based definition of full collapse on computed tomography angiography (CTA) was suggested based on prognostic data: distal ICA diameter ≤ 2.0 mm and/or side to side distal ICA diameter ratio (ICA ratio) ≤ 0.42.
Source: European Journal of Vascular and Endovascular Surgery - Category: Surgery Authors: Source Type: research