Usefulness of Plaque Magnetic Resonance Imaging in Identifying High-Risk Carotid Plaques Irrespective of the Degree of Stenosis
Journal of Cerebrovascular and Endovascular Neurosurgery
; : 291-300, 2017.
Article
in En
| WPRIM
| ID: wpr-148434
Responsible library:
WPRO
ABSTRACT
OBJECTIVE:
Measurement of the degree of stenosis is not enough to decide on the treatment strategy for patients with carotid stenosis. Plaque morphology examination is needed for such a decision-making. Thus, we evaluated the usefulness of plaque magnetic resonance imaging (MRI) to decide on the modality of treatment for patients with carotid atherosclerotic plaques. MATERIALS ANDMETHODS:
Fifteen patients presenting with carotid stenosis between 2014 and 2016 were included. They underwent angiography for measurement of the degree of stenosis. Carotid plaques were visualized using MRI.RESULTS:
There were six (40%) stable and nine (60%) unstable plaques. Seven symptomatic patients (77.7%) had unstable lesions and two symptomatic patients (33.3%) had stable lesions (p = 0.096). There were six (40%) intraplaque hemorrhage (IPH) cases. There were six symptomatic patients (100%) in the IPH group and three symptomatic patients (33.3%) in the non-IPH group (p = 0.013). The mean stenosis degree was 58.9% in the IPH group and 70.4% in the non-IPH group (p = 0.094). Symptoms occurred irrespective of the degree of the stenosis in the IPH groups. In the IPH group, the recurrent ischemic cerebrovascular event rate was 33.3%. Particularly, the recurrent ischemic cerebrovascular event rate was 66.7% in the IPH group with mild stenosis treated with medications.CONCLUSION:
IPH in plaque MRI is significantly associated with ischemic symptoms and has a high risk for subsequent ischemic cerebrovascular events irrespective of the degree of stenosis. Plaque MRI is a useful tool in predicting symptomatic risks for carotid stenosis irrespective of the degree of such stenosis.Key words
Full text:
1
Index:
WPRIM
Main subject:
Magnetic Resonance Imaging
/
Angiography
/
Carotid Stenosis
/
Constriction, Pathologic
/
Plaque, Atherosclerotic
/
Hemorrhage
Type of study:
Etiology_studies
/
Prognostic_studies
Limits:
Humans
Language:
En
Journal:
Journal of Cerebrovascular and Endovascular Neurosurgery
Year:
2017
Type:
Article