Article Figures & Data
Figures
- Fig 1.
Flow chart of inclusion criteria.
- Fig 2.
Carotid web diagnosis by the classic appearance on CTA, which shows a thin intraluminal filling defect along the posterior wall of the carotid bulb on an oblique sagittal section and a corresponding septum on axial images (arrow).
- Fig 3.
The differential diagnosis includes calcified atherosclerotic plaques (A), carotid artery embolism (B), and carotid artery dissection (C).
- Fig 4.
Carotid artery web in 3 patients with TIA (A–C). Sagittal oblique CTA (A1, B1, and C1) shows a shelf-like intraluminal protrusion arising from the posterior wall of the carotid bulb (arrow). Axial CTA (A2, B2, and C2) shows that the membrane is shelf-like, consistent with a carotid artery web (arrow); volume reconstruction (A3, B3, and C3) shows the same web inside the vessel (arrow).
Tables
Parameter Patients with TIA without Carotid Web (n = 123) Patients with TIA with Carotid Web (n = 12) P Value Median age (yr) 64 58 .028 Sex (male) 77 (62.6%) 3 (25%) .015 Ethnicity (No.) (%) Chinese 123 (100%) 12 (100%) Other 0 0 Right-hemisphere stroke 56 (45.5%) 4 (33.3%) .548 Risk factors Hypertension 26 (21.1%) 0 .122 Diabetes 16 (13.0%) 1 (8.3%) 1.0 Atrial fibrillation 9 (7.3%) 0 1.0 Myocardial infarction 2 (1.6%) 0 1.0 Smoking 20 (16.3%) 1 (8.3%) .691 Alcohol abuse 10 (8.1%) 0 .599 MRI (DWI hyperintensity) 0 0 Recurrent episode within 3 mo 15 (12.2%) 10 (83.3%) .00 Note:—Unless otherwise indicated, data are absolute values with percentages in parentheses.
Patient No. Degree of Carotid Artery Stenosis (%) and Carotid Web (mm) Nonstenosis Calcification of Carotid Bifurcation Recurrent TIA Progression to Cerebral Infarction (within 3 mo) 1 0, 3.5 No Yes No 2 20, 6.5 Yes Yes Yes 3 0, 3.5 No Yes Yes 4 10, 3.0 No Yes Yes 5 0, 2.9 No No No 6 10, 5.8 Yes Yes Yes 7 5, 3.6 No Yes Yes 8 0, 3.3 No Yes Yes 9 15, 3.9 No Yes Yes 10 0, 3.0 Yes Yes Yes 11 0, 4.6 No No No 0, 2.9 No No No 12 10, 4 No Yes Yes
