{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T06:26:16Z","timestamp":1776752776635,"version":"3.51.2"},"reference-count":31,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2012,11,19]],"date-time":"2012-11-19T00:00:00Z","timestamp":1353283200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Neuroimaging"],"published-print":{"date-parts":[[2013,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>BACKGROUND<\/jats:title><jats:p>Transcranial Doppler (TCD) has been subjected to criticism for detecting vasospasm (VSP). Our study's aim is to derive criteria for middle cerebral artery (MCA) vasospasm (MCA\u2010VSP) based on cerebral angiography (CA).<\/jats:p><\/jats:sec><jats:sec><jats:title>METHODS<\/jats:title><jats:p>A prospective data of patients with aneurysmal subarachnoid hemorrhage (aSAH) from January 2004 to August 2009. TCD was performed daily from day 2 to 14 from symptom's onset. Follow\u2010up CA was done at day 7\u20109. TCD mean flow velocities (MFV) of all vessels at baseline (b), middle (m) and before CA (preangio) were recorded. Several MCA MFV ratios were computed. Moderate to severe VSP on CA was defined as &gt;1\/3 luminal narrowing. Univariate and stepwise logistic regression analysis were performed.<\/jats:p><\/jats:sec><jats:sec><jats:title>RESULTS<\/jats:title><jats:p>One hundred sixty\u2010nine patients (338 MCA) with aSAH were included, mean age: 54.8 \u00b1 13, women: 103 (62%). Twenty\u2010nine patients (8.6%) had angiographic MCA\u2010VSP. TCD scoring system of 3 points for MCA\u2010VSP was computed based on (a) bMCA MFV \u2265 120 cm\/s (sensitivity: 59.3%, specificity: 85%, PPV: 36.4%, NPV: 93.5%, <jats:italic>P<\/jats:italic> &lt; .001) (1 point), Preangio MCA MFV \u2265 150 cm\/s (79.3%, 89.9%, 39%, 97.3%, &lt;.001) (1 point), and affected preangio MCA\/bMCA MFV ratio \u22651.5 (84%, 63%, 25.6%, 96.3%, .001) (1 point). The score of 3 has 96% sensitivity and 96% specificity (OR: 300) whereas the score of 1 has 12% sensitivity and 58% specificity (OR: 4.3) for identifying MCA\u2010VSP.<\/jats:p><\/jats:sec><jats:sec><jats:title>CONCLUSION<\/jats:title><jats:p>TCD stringent criteria for moderate to severe MCA\u2010VSP are feasible and applicable in aSAH population.<\/jats:p><\/jats:sec>","DOI":"10.1111\/j.1552-6569.2012.00771.x","type":"journal-article","created":{"date-parts":[[2012,11,19]],"date-time":"2012-11-19T19:56:26Z","timestamp":1353354986000},"page":"489-494","source":"Crossref","is-referenced-by-count":12,"title":["Derivation of Transcranial Doppler Criteria for Angiographically Proven Middle Cerebral Artery Vasospasm after Aneurysmal Subarachnoid Hemorrhage"],"prefix":"10.1111","volume":"23","author":[{"given":"Joseph","family":"Sebastian","sequence":"first","affiliation":[{"name":"Division of Neurology Department of Medicine University of Alberta  Edmonton Alberta Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carol","family":"Derksen","sequence":"additional","affiliation":[{"name":"Division of Neurology Department of Medicine University of Alberta  Edmonton Alberta Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Khurshid","family":"Khan","sequence":"additional","affiliation":[{"name":"Division of Neurology Department of Medicine University of Alberta  Edmonton Alberta Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mohammad","family":"Ibrahim","sequence":"additional","affiliation":[{"name":"Division of Neurology Department of Medicine University of Alberta  Edmonton Alberta Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bilal","family":"Hameed","sequence":"additional","affiliation":[{"name":"Division of Neurology Department of Medicine University of Alberta  Edmonton Alberta Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Muzaffar","family":"Siddiqui","sequence":"additional","affiliation":[{"name":"Division of Neurology Department of Medicine University of Alberta  Edmonton Alberta Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael","family":"Chow","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery University of Alberta  Edmonton Alberta Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J. 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