{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,10,6]],"date-time":"2023-10-06T05:10:29Z","timestamp":1696569029119},"reference-count":20,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2012,12,20]],"date-time":"2012-12-20T00:00:00Z","timestamp":1355961600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Clinical Ultrasound"],"published-print":{"date-parts":[[2013,9]]},"abstract":"<jats:sec><jats:title>Purpose<\/jats:title><jats:p>To assess the benefits of using a low\u2010frequency convex probe and detecting ophthalmic artery blood flow for the differential diagnosis of occlusion from severe stenosis of the internal carotid artery (ICA).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A total of 103 patients were enrolled and had three sequential examinations by an experienced sonographer. First, the proximal ICA was examined with a 5.0\u20137.5\u2010MHz linear probe. Second, the distal ICA was examined with a 3.5\u20135.0\u2010MHz convex probe. Third, the ophthalmic artery (OA) was examined with a 5.0\u20137.5\u2010MHz linear probe. Three parallel sets of diagnoses were made based on results from (1) high\u2010frequency ultrasonography; (2) combined use of high\u2010 and low\u2010frequency ultrasonography; and (3) combined use of high\u2010 and low\u2010frequency ultrasonography along with OAs examination findings. Efficiencies of the three diagnoses were compared by receiver operating characteristic curves with digital subtraction angiography as the gold standard.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The second diagnostic approach yielded the highest sensitivity (96.6%) and specificity (94.5%). OA blood flow was reversed in most, but not all, cases of ICA occlusion (27\/29). Areas under the receiver operating characteristic curves of the three diagnoses were significantly different (<jats:italic>p<\/jats:italic> &lt; 0.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The diagnostic performance of combined high\u2010 and low\u2010frequency ultrasonography is greater than that of high\u2010frequency ultrasonography alone. Although OA examination does not increase the diagnostic performance, it provides helpful data for the assessment of hemodynamics and collateral circulation. \u00a9 2013 Wiley Periodicals, Inc. <jats:italic>J Clin Ultrasound<\/jats:italic> <jats:bold>41<\/jats:bold>:408\u2013414, 2013<\/jats:p><\/jats:sec>","DOI":"10.1002\/jcu.22022","type":"journal-article","created":{"date-parts":[[2012,12,21]],"date-time":"2012-12-21T23:54:58Z","timestamp":1356134098000},"page":"408-414","source":"Crossref","is-referenced-by-count":2,"title":["Combined linear array high\u2010 and convex array low\u2010frequency duplex ultrasonography with or without examination of the ophthalmic artery in the differential diagnosis of occlusion from severe stenosis of internal carotid artery"],"prefix":"10.1002","volume":"41","author":[{"given":"Jian\u2010Qun","family":"Xiong","sequence":"first","affiliation":[{"name":"Department of Medical Ultrasound the Second Affiliated Hospital of Guangzhou Medical University Guangzhou 510260 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Li","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Medical Ultrasound the Second Affiliated Hospital of Guangzhou Medical University Guangzhou 510260 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chen","family":"Yu","sequence":"additional","affiliation":[{"name":"Department of Medical Ultrasound the Second Affiliated Hospital of Guangzhou Medical University Guangzhou 510260 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yu\u2010Wen","family":"Shi","sequence":"additional","affiliation":[{"name":"Department of Radiology the Second Affiliated Hospital of Guangzhou Medical University Guangzhou 510260 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ying\u2010Hua","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Medical Ultrasound the Second Affiliated Hospital of Guangzhou Medical University Guangzhou 510260 China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2012,12,20]]},"reference":[{"key":"e_1_2_5_2_1","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.0000018650.58984.75"},{"key":"e_1_2_5_3_1","doi-asserted-by":"publisher","DOI":"10.1161\/STROKEAHA.111.625186"},{"key":"e_1_2_5_4_1","first-page":"336","article-title":"Carotid intervention: stent or surgery? 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