{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T06:59:51Z","timestamp":1791961191079,"version":"4.3.4"},"reference-count":0,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"9","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Stroke"],"published-print":{"date-parts":[[1992,9]]},"abstract":"<jats:p>The transcranial color duplex sonography technique was applied to the vertebrobasilar-posterior system to provide normal data for clinical application.<\/jats:p>\n          <jats:p>The intracranial posterior circulation was studied in 49 healthy volunteers (mean +\/- SD age, 35 +\/- 12 years) by a transcranial and suboccipital approach with a 2.0-MHz sector transducer of a computed sonography system.<\/jats:p>\n          <jats:p>The posterior cerebral artery and the vertebrobasilar system were depicted clearly in the color Doppler mode. Pulsed Doppler signals could be recorded in the posterior cerebral (100%), basilar (92%), and vertebral arteries (89%). The following normal values were provided for all vessels: systolic peak, end-diastolic maximum, time-averaged, and time-averaged maximum velocities; resistance and pulsatility indexes; and a spectral broadening index. Mean +\/- SD values were 45.9 +\/- 9.6, 45.5 +\/- 10.8, and 39.2 +\/- 10.6 cm\/sec for time-averaged maximum velocity, and 28.3 +\/- 6.5, 30.6 +\/- 7.2, and 24.7 +\/- 8.4 cm\/sec for time-averaged velocity in the posterior cerebral, basilar, and vertebral arteries, respectively. In a reproducibility study, duplex measurements of the posterior cerebral arteries were repeated in 27 subjects. The correlation between the two examiners was high (r = 0.56, p less than or equal to 0.0001 for time-averaged maximum velocity).<\/jats:p>\n          <jats:p>Color duplex sonography of the vertebrobasilar-posterior system is a new, noninvasive, bedside investigative technique. It permits visualization of artery flow in real time, relating these to adjacent brain and cranial structures, as well as angle-corrected duplex measurement of \"true\" flow velocities at defined sites of the vessels. Thus, it will open new diagnostic possibilities in disorders of the posterior circulation.<\/jats:p>","DOI":"10.1161\/01.str.23.9.1280","type":"journal-article","created":{"date-parts":[[2011,6,17]],"date-time":"2011-06-17T20:08:03Z","timestamp":1308341283000},"page":"1280-1286","update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":59,"title":["Evaluation of the vertebrobasilar-posterior system by transcranial color duplex sonography in adults."],"prefix":"10.1161","volume":"23","author":[{"given":"M","family":"Sch\u00f6ning","sequence":"first","affiliation":[{"name":"Division of Neuropediatrics, Childrens' Hospital of the University of T\u00fcbingen, FRG."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J","family":"Walter","sequence":"additional","affiliation":[{"name":"Division of Neuropediatrics, Childrens' Hospital of the University of T\u00fcbingen, FRG."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","container-title":["Stroke"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ahajournals.org\/doi\/pdf\/10.1161\/01.STR.23.9.1280","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,5,12]],"date-time":"2024-05-12T22:33:51Z","timestamp":1715553231000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ahajournals.org\/doi\/10.1161\/01.STR.23.9.1280"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1992,9]]},"references-count":0,"journal-issue":{"issue":"9","published-print":{"date-parts":[[1992,9]]}},"alternative-id":["10.1161\/01.STR.23.9.1280"],"URL":"https:\/\/doi.org\/10.1161\/01.str.23.9.1280","relation":{},"ISSN":["0039-2499","1524-4628"],"issn-type":[{"value":"0039-2499","type":"print"},{"value":"1524-4628","type":"electronic"}],"subject":[],"published":{"date-parts":[[1992,9]]},"assertion":[{"value":"1992-09-01","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}