{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T18:00:02Z","timestamp":1780509602054,"version":"3.54.1"},"reference-count":2,"publisher":"S. Karger AG","issue":"4","license":[{"start":{"date-parts":[[2001,1,1]],"date-time":"2001-01-01T00:00:00Z","timestamp":978307200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"},{"start":{"date-parts":[[2001,1,1]],"date-time":"2001-01-01T00:00:00Z","timestamp":978307200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cerebrovasc Dis"],"published-print":{"date-parts":[[2001]]},"abstract":"<jats:p>&lt;i&gt;Background:&lt;\/i&gt; Vertebrobasilar (VB) strokes appear to have the same causes as carotid strokes. Obstructive lesions of proximal vertebral arteries probably occur in about 30% of stroke patients. &lt;i&gt;Purpose:&lt;\/i&gt; Our aim was to assess the validity of color Doppler sonography compared to selective intra-arterial angiography in the quantification of proximal vertebral artery stenoses. &lt;i&gt;Materials and Methods:&lt;\/i&gt; A prospective blind study of 316 vertebral arteries was undertaken between 1996 and 1998. One hundred and fifty-eight patients with cerebrovascular disorders without cerebral hemorrhage were studied consecutively by frequency or amplitude color Doppler flow imaging and intra-arterial angiography. The lesions were quantified by morphological and hemodynamic criteria and classified into 6 groups: 0% 207 arteries; 1\u201329% 32 arteries; 30\u201349% 29 arteries; 50\u201369% 13 arteries; 70\u201399% 23 arteries; 100% 12 arteries. &lt;i&gt;Results:&lt;\/i&gt; Ten of the 12 occlusions were identified, the 2 false-negatives were due to 2 revascularized vessels. Moderate stenoses (&lt;50%) were differentiated from tight stenoses (&gt;50%) using hemodynamic criteria. The majority of false-negative stenoses (38) in the different groups were related to intrathoracic or very deep origin of the artery, anechogenic stenosis or a tortuous vessel. Stenoses greater than 70% were diagnosed in 71% of cases with a specificity of 99%. The \u0138 value was 0.80. &lt;i&gt;Conclusion:&lt;\/i&gt; Duplex sonography should be proposed first in VB attacks or stroke to detect and quantify vertebral artery stenoses for surgery and angioplasty.<\/jats:p>","DOI":"10.1159\/000047663","type":"journal-article","created":{"date-parts":[[2003,4,15]],"date-time":"2003-04-15T12:11:24Z","timestamp":1050408684000},"page":"335-340","source":"Crossref","is-referenced-by-count":40,"title":["Accuracy of Color-Doppler in the Quantification of Proximal Vertebral Artery Stenoses"],"prefix":"10.1159","volume":"11","author":[{"given":"J.M.","family":"de Bray","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"Pasco","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"F.","family":"Tranquart","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"X.","family":"Papon","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C.","family":"Alecu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"B.","family":"Giraudeau","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"F.","family":"Dubas","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.","family":"Emile","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"127","published-online":{"date-parts":[[2001,5,24]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1016\/0895-4356(93)90050-B"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1067\/mva.1987.avs0050594"}],"container-title":["Cerebrovascular Diseases"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/47663","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/47663","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,4,24]],"date-time":"2025-04-24T03:55:35Z","timestamp":1745466935000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000047663"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2001]]},"references-count":2,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2001,5,1]]}},"URL":"https:\/\/doi.org\/10.1159\/000047663","archive":["Portico"],"relation":{},"ISSN":["1015-9770","1421-9786"],"issn-type":[{"value":"1015-9770","type":"print"},{"value":"1421-9786","type":"electronic"}],"subject":[],"published":{"date-parts":[[2001]]}}}