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- Title
Prevalence study of proximal vertebral artery stenosis using high-resolution contrast-enhanced magnetic resonance angiography.
- Authors
Kim, S. H.; Lee, J. S.; Kwon, O. K.; Han, M. K.; Kim, J. H.
- Abstract
<bold>Purpose: </bold>To evaluate the prevalence of proximal vertebral artery stenosis, compared wiith those of the distal vertebral/basilar artery and extracranial internal carotid artery, in a large population of stroke and non-stroke patients.<bold>Material and Methods: </bold>Nine-hundred-and-thirty-five patients who underwent high-resolution contrast-enhanced magnetic resonance angiography in a regional general hospital were categorized into six groups based on neurological symptoms and disease: an asymptomatic group (n = 182), a minor symptom group with headache or dizziness (n = 519), a cardiac group with coronary artery steno-occlusive disease (n = 15), a hemorrhagic group with old cerebral hemorrhage (n=26), an anterior circulation infarct group (n = 121), and posterior circulation infarct group (n = 72). Prevalence of stenosis of the proximal vertebral artery, distal vertebral/basilar artery, and internal carotid artery was analyzed.<bold>Results: </bold>The prevalence of stenosis of the proximal vertebral artery, distal vertebral/ basilar artery, and internal carotid artery was 12.9%, 5.5%, and 7.2%, respectively, in the study population, and rose as the age increased (P < 0.0001 for all arteries). The prevalence of stenosis of the proximal vertebral artery, distal vertebral/basilar artery, and internal carotid artery was 3.3%, 0.5%, and 1.1%, respectively, in the asymptomatic group; 8.3%, 2.1%, and 3.7%, respectively, in the minor symptom group; 13.3%, 6.7% and 6.7%, respectively, in the cardiac group; 19.2%, 7.7%, and 7.7%, respectively, in the hemorrhagic group; 27.3%, 8.3%, and 25.6%, respectively, in the anterior circulation infarct group; and 44.4%, 36.1%, and 16.7%, respectively, in the posterior circulation infarct group. This increasing tendency of stenosis accordingly was statistically significant (P < 0.0001 for all arteries).<bold>Conclusion: </bold>The prevalence of proximal vertebral artery stenosis was highest, compared with those of the distal vertebral/basilar artery and internal carotid artery, although the clinical significance of proximal vertebral artery stenosis should be investigated in further studies.
- Subjects
KOREA; CAROTID artery; ARTERIAL stenosis; MAGNETIC resonance; ARTERIAL injuries; ANGIOGRAPHY; MEDICAL radiography; ISCHEMIA diagnosis; AGE distribution; COMPARATIVE studies; DIAGNOSTIC imaging; ISCHEMIA; LONGITUDINAL method; RESEARCH methodology; MEDICAL cooperation; REFERENCE values; RESEARCH; STROKE; VERTEBRAL artery; EVALUATION research; CONTRAST media; CROSS-sectional method; BASILAR artery; MAGNETIC resonance angiography; DRUG administration; DRUG dosage
- Publication
Acta Radiologica, 2005, Vol 46, Issue 3, p314
- ISSN
0284-1851
- Publication type
journal article
- DOI
10.1080/02841850510016009