Prevalence study of proximal vertebral artery stenosis using high-resolution contrast-enhanced magnetic resonance angiography

被引:34
作者
Kim, SH
Lee, JS
Kwon, OK
Han, MK
Kim, JH
机构
[1] Seoul Natl Univ, Coll Med, Dept Radiol, Seoul, South Korea
[2] Seoul Natl Univ, Coll Med, Dept Neurosurg, Seoul, South Korea
[3] Seoul Natl Univ, Coll Med, Dept Neurol, Seoul, South Korea
关键词
brain; magnetic resonance imaging (MRI); magnetic resonance angiography (MRA);
D O I
10.1080/02841850510016009
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
Purpose: To evaluate the prevalence of proximal vertebral artery stenosis, compared with those of the distal vertebral/ basilar artery and extracranial internal carotid artery, in a large population of stroke and non- stroke patients. Material and Methods: 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. Results: 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). Conclusion: 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.
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页码:314 / 321
页数:8
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