File:Acute internal carotid artery dissection (Radiopaedia 53541-59632 Axial T2 25).jpg

Summary:

• Radiopaedia case ID: 53541
• Image ID: 30386299
• Image stack position: 25/31
• Plane projection: Axial
• Aux modality: T2
• Study findings: MRI brain. High T1 and T2 signal crescent sign around the internal carotid artery corresponding to the hyperdensity seen on non-contrast CT. Abnormal vessel contour is again appreciated. These findings are consistent with acute left internal carotid artery dissection. No evidence of cerebral ischemia.
• Modality: MRI
• System: Central Nervous System
• Findings: CT brain study. No evidence of sulcal effacement, acute hemorrhage or ischemic changes within the brain. Ventricular pattern is appropriate for age. No acute fractures seen. The cervical segment of the left internal carotid artery demonstrates a narrowed lumen with a crescent-shaped hyperattenuating focus, favored to be a mural thrombus that extends towards the skull base. This is suspicious for acute left internal carotid artery dissection, especially given the presenting history.
• Published: 12th Sep 2017
• Source: https://radiopaedia.org/cases/acute-internal-carotid-artery-dissection
• Author: Andrew Dixon
• Permission: http://creativecommons.org/licenses/by-nc-sa/3.0/

Licensing:

Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)