{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,4]],"date-time":"2026-02-04T15:28:16Z","timestamp":1770218896253,"version":"3.49.0"},"reference-count":20,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"3","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Stroke"],"published-print":{"date-parts":[[1995,3]]},"abstract":"<jats:p>\n            <jats:italic>Background and Purpose<\/jats:italic>\n            This study was undertaken to determine the impact of color-flow Doppler on the accuracy of noninvasive carotid imaging for distinguishing an internal carotid artery pseudo-occlusion (string sign) from a complete occlusion.\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Methods<\/jats:italic>\n            From January 1985 to January 1994, review of noninvasive vascular studies, arteriograms, and operative reports of 26 consecutive patients undergoing 27 carotid endarterectomies for carotid pseudo-occlusion was performed. Further review was conducted of all patients identified with carotid occlusion by noninvasive testing who underwent confirmatory arteriography during the same interval.\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Results<\/jats:italic>\n            Conventional gray-scale duplex scanning (January 1985 to December 1989) correctly identified 3 of 11 (27%) pseudo-occluded internal carotid arteries compared with 15 of 16 (94%) internal carotid artery pseudo-occlusions correctly identified by color-flow Doppler (January 1990 to June 1994) (\n            <jats:italic>P<\/jats:italic>\n            &lt;.01). Similarly, carotid occlusion was more accurately identified by color-flow Doppler (33 of 33, 100%) compared with gray-scale duplex scanning (19 of 27, 90%) (\n            <jats:italic>P<\/jats:italic>\n            &lt;.01).\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Conclusions<\/jats:italic>\n            The addition of color-flow Doppler to the duplex evaluation of the extracranial carotid circulation improves the accuracy of distinguishing carotid pseudo-occlusion from the occluded internal carotid artery and may obviate the need for arteriography to identify patients with this critical level of carotid stenosis.\n          <\/jats:p>","DOI":"10.1161\/01.str.26.3.434","type":"journal-article","created":{"date-parts":[[2011,6,17]],"date-time":"2011-06-17T20:08:03Z","timestamp":1308341283000},"page":"434-438","update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":56,"title":["Distinguishing Carotid Artery Pseudo-Occlusion With Color-Flow Doppler"],"prefix":"10.1161","volume":"26","author":[{"given":"Scott S.","family":"Berman","sequence":"first","affiliation":[{"name":"From the Section of Vascular Surgery, University of Arizona Health Sciences Center, Tucson, Ariz."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jenifer J.","family":"Devine","sequence":"additional","affiliation":[{"name":"From the Section of Vascular Surgery, University of Arizona Health Sciences Center, Tucson, Ariz."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luke S.","family":"Erdoes","sequence":"additional","affiliation":[{"name":"From the Section of Vascular Surgery, University of Arizona Health Sciences Center, Tucson, Ariz."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Glenn C.","family":"Hunter","sequence":"additional","affiliation":[{"name":"From the Section of Vascular Surgery, University of Arizona Health Sciences Center, Tucson, Ariz."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"276","reference":[{"key":"e_1_3_2_1_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF02018179"},{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/0741-5214(93)90077-Y"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF02018167"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/0741-5214(89)90038-4"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM199108153250701"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/0140-6736(91)92916-P"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1097\/00000658-198803000-00015"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1161\/str.20.5.2655185"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1080\/01616412.1990.11739919"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9610(83)90291-X"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.2214\/ajr.151.5.1045"},{"key":"e_1_3_2_12_2","doi-asserted-by":"publisher","DOI":"10.2214\/ajr.135.6.1141"},{"key":"e_1_3_2_13_2","doi-asserted-by":"publisher","DOI":"10.1037\/h0026256"},{"key":"e_1_3_2_14_2","unstructured":"Daly LE Bourke GJ McGilvray J. 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