{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T11:43:35Z","timestamp":1792151015129,"version":"4.4.0"},"reference-count":15,"publisher":"S. Karger AG","issue":"1-2","license":[{"start":{"date-parts":[[2017,11,23]],"date-time":"2017-11-23T00:00:00Z","timestamp":1511395200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"},{"start":{"date-parts":[[2017,11,23]],"date-time":"2017-11-23T00:00:00Z","timestamp":1511395200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Eur Neurol"],"published-print":{"date-parts":[[2018]]},"abstract":"<b><i>Background and Aims:<\/i><\/b> We aimed to introduce a parameter of anterior borderzone angle (ABZA) to quantitatively evaluate the ACA-MCA leptomeningeal collaterals for middle cerebral artery stenosis (MCAS). <b><i>Methods:<\/i><\/b> Two hundred seventy-five patients with 50\u2013100% MCAS and 100 controls were included. The 95% reference range of ABZA was obtained from the controls. ABZA<sub>trans<\/sub> was defined as \u201cABZA\/the 95% upper limit.\u201d Relationships between ABZA and MCAS, \u00adABZA<sub>trans<\/sub> and the TICI grade, the American Society of Interventional and Therapeutic Neuroradiology\/Society of Interventional Radiology (ASITN\/SIR) collateral grade were analyzed. An ABZA grade model for the ACA leptomeningeal collaterals was tentatively developed. <b><i>Results:<\/i><\/b> The 95% reference range of ABZA was 0.0\u00ba\u201323.0\u00ba. ABZA was significantly associated with MCAS by a function of the fourth power (R<sup>2<\/sup>\u00a0= 0.723, <i>p\u00a0&#x3c;<\/i> 0.001), and could predict hemodynamic MCAS (\u226570%) with an AUC of 0.928 (95% CI 0.903\u20130.953). ABZA<sub>trans<\/sub> was negatively correlated with the TICI grade (rho<i>\u00a0=<\/i> \u20130.752, <i>p\u00a0&#x3c;<\/i> 0.001) and positively with the ASITN\/SIR grade (rho<i>\u00a0=<\/i> 0.921, <i>p\u00a0&#x3c;<\/i> 0.001). The ABZA grade was created by rounding \u00adABZA<sub>trans<\/sub> to a nearest integer, and was closely associated with the ASITN\/SIR grade (rho\u00a0= 0.894, <i>p\u00a0&#x3c;<\/i> 0.001). <b><i>Conclusions:<\/i><\/b> ABZA can be used as a hemodynamic parameter to quantitatively evaluate ACA leptomeningeal collaterals.<\/jats:p>","DOI":"10.1159\/000484313","type":"journal-article","created":{"date-parts":[[2017,11,23]],"date-time":"2017-11-23T22:01:32Z","timestamp":1511474492000},"page":"45-53","source":"Crossref","is-referenced-by-count":2,"title":["Anterior Borderzone Angle for Hemodynamic Collateral Metric in Patients with Symptomatic Middle Cerebral Artery Stenosis"],"prefix":"10.1159","volume":"79","author":[{"given":"Yongkun","family":"Li","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yunyun","family":"Xiong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qiankun","family":"Cai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dezhi","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qiliang","family":"Dai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenhua","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhixin","family":"Huang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7268-2085","authenticated-orcid":false,"given":"Wen","family":"Sun","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5109-8736","authenticated-orcid":false,"given":"David\u00a0S.","family":"Liebeskind","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yinzhou","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinfeng","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"127","published-online":{"date-parts":[[2017,11,23]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1159\/000438779"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1002\/ana.24340"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1161\/STROKEAHA.113.003508"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMoa043033"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.1038\/jcbfm.2010.224"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1002\/ana.22354"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1159\/000337332"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.3174\/ajnr.A2794"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.1016\/j.neurad.2014.02.001"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1161\/01.STR.0000082721.62796.09"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1159\/000275508"},{"key":"ref12","doi-asserted-by":"publisher","DOI":"10.1159\/000093241"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM199108153250701"},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.1002\/ccd.22299"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.1161\/01.STR.0000018011.66817.41"}],"container-title":["European Neurology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/484313","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/484313","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,4,23]],"date-time":"2025-04-23T17:10:03Z","timestamp":1745428203000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000484313"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,11,23]]},"references-count":15,"journal-issue":{"issue":"1-2","published-online":{"date-parts":[[2018,3,13]]},"published-print":{"date-parts":[[2018,3,15]]}},"URL":"https:\/\/doi.org\/10.1159\/000484313","archive":["Portico"],"relation":{},"ISSN":["0014-3022","1421-9913"],"issn-type":[{"value":"0014-3022","type":"print"},{"value":"1421-9913","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,11,23]]}}}