High-resolution MR imaging for diagnosis and follow-up study in 4 patients with extracranial internal carotid artery dissection
10.3969/j.issn.1672-5921.2011.10.009
- Author:
Min WAN
1
Author Information
1. Department of Neurology
- Publication Type:Journal Article
- Keywords:
Aneurysm, dissecting;
Diagnosis;
Internal carotid artery rupture;
Magnetic resonance imaging;
Prognosis
- From:
Chinese Journal of Cerebrovascular Diseases
2011;8(10):539-543
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To investigate the characteristics of extracranial internal carotid artery dissection (ICAD) and the application value of high-resolution MR imaging (HR-MRI) in the diagnosis and follow-up study. Methods: Four patients with extracranial ICAD were diagnosed by clinical and imaging and confirmed by 3D-HR-MRI. They received anticoagulant or antiplatelet therapies for 2 to 9 months and their clinical manifestations were followed up. Their prognostic evaluation was conducted using the National Institutes of Health Stroke Scale (NIHSS), and reexamined with 3D-HR-MRI for observing the changes of hematoma in the vascular walls. Results: Circled digit oneAll the 4 patients was detected by 3D-HR-MRI. The "double-lumen sign" and the "half-moon" shaped intramural hematoma with uniform strength and slightly higher signal could be seen on each axial sequence. Circled digit twoThe clinical prognosis of the 4 patients were good. Circled digit threeThe intramural hematomas were reexamined in 3 patients, their hematomas were significantly reduced or completely disappeared. One patient with true lumen thrombosis caused arterial occlusion had distal recanalization during the reexamination. Conclusion: HR-MRI may conducts the diagnosis and follow-up study of the extracranial ICAD. The prognosis of the extracranial ICAD may be good if it is diagnosed and treated promptly.
