{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T14:36:21Z","timestamp":1777473381287,"version":"3.51.4"},"reference-count":0,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[2005,5,1]],"date-time":"2005-05-01T00:00:00Z","timestamp":1114905600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Acta Radiol"],"published-print":{"date-parts":[[2005,5]]},"abstract":"<jats:p>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\u2010stroke patients.<\/jats:p>\n                  <jats:p>Material and Methods: Nine\u2010hundred\u2010and\u2010thirty\u2010five patients who underwent high\u2010resolution contrast\u2010enhanced magnetic resonance angiography in a regional general hospital were categorized into six groups based on neurological symptoms and disease: an asymptomatic group ( n\u200a=\u200a182), a minor symptom group with headache or dizziness ( n\u200a=\u200a519), a cardiac group with coronary artery steno\u2010occlusive disease ( n\u200a=\u200a15), a hemorrhagic group with old cerebral hemorrhage ( n\u200a=\u200a26), an anterior circulation infarct group ( n\u200a=\u200a121), and posterior circulation infarct group ( n\u200a=\u200a72). Prevalence of stenosis of the proximal vertebral artery, distal vertebral\/basilar artery, and internal carotid artery was analyzed.<\/jats:p>\n                  <jats:p>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&lt;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&lt;0.0001 for all arteries).<\/jats:p>\n                  <jats:p>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.<\/jats:p>","DOI":"10.1080\/02841850510016009","type":"journal-article","created":{"date-parts":[[2009,12,9]],"date-time":"2009-12-09T07:34:02Z","timestamp":1260344042000},"page":"314-321","source":"Crossref","is-referenced-by-count":27,"title":["Prevalence study of proximal vertebral artery stenosis using high\u2010resolution contrast\u2010enhanced magnetic resonance angiography"],"prefix":"10.1177","volume":"46","author":[{"given":"S. H.","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Radiology, Neurosurgery, and Neurology, Seoul National University College of Medicine, Seoul, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J. S.","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Radiology, Neurosurgery, and Neurology, Seoul National University College of Medicine, Seoul, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"O. K.","family":"Kwon","sequence":"additional","affiliation":[{"name":"Department of Radiology, Neurosurgery, and Neurology, Seoul National University College of Medicine, Seoul, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M. K.","family":"Han","sequence":"additional","affiliation":[{"name":"Department of Radiology, Neurosurgery, and Neurology, Seoul National University College of Medicine, Seoul, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J. H.","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Radiology, Neurosurgery, and Neurology, Seoul National University College of Medicine, Seoul, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2016,8,30]]},"container-title":["Acta Radiologica"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/journals.sagepub.com\/doi\/pdf\/10.1080\/02841850510016009","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/journals.sagepub.com\/doi\/pdf\/10.1080\/02841850510016009","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T13:46:42Z","timestamp":1777384002000},"score":1,"resource":{"primary":{"URL":"http:\/\/journals.sagepub.com\/doi\/10.1080\/02841850510016009"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2005,5]]},"references-count":0,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2005,5]]}},"alternative-id":["10.1080\/02841850510016009"],"URL":"https:\/\/doi.org\/10.1080\/02841850510016009","relation":{},"ISSN":["0284-1851","1600-0455"],"issn-type":[{"value":"0284-1851","type":"print"},{"value":"1600-0455","type":"electronic"}],"subject":[],"published":{"date-parts":[[2005,5]]}}}