{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T00:02:05Z","timestamp":1789776125449,"version":"4.0.1"},"reference-count":21,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[1991,12]]},"abstract":"\u2713 Two patients with rare variations of the A1<\/jats:sub> segment of the anterior cerebral artery are presented. One patient had a perforation of the optic tract by an abnormal course of the A1<\/jats:sub> segment, and the other harbored an aneurysm of the A1<\/jats:sub> segment running below the optic nerve. The authors present a summary of A1<\/jats:sub> segment variations described in the literature.<\/jats:p>","DOI":"10.3171\/jns.1991.75.6.0950","type":"journal-article","created":{"date-parts":[[2009,5,19]],"date-time":"2009-05-19T16:25:34Z","timestamp":1242750334000},"page":"950-953","source":"Crossref","is-referenced-by-count":42,"title":["Surgically verified variations in the A1 segment of the anterior cerebral artery"],"prefix":"10.3171","volume":"75","author":[{"given":"Johannes","family":"M\u00e4urer","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elisabeth","family":"M\u00e4urer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Axel","family":"Perneczky","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1","series-title":"Acta Neurochir","first-page":"305","article-title":"Infra-optic course of anterior cerebral artery and low bifurcation of the internal carotid artery.","volume":"38","author":"Bosma","year":"1977"},{"key":"b2","series-title":"Virchows Arch Pathol Anat","first-page":"178","article-title":"Aneurysmen und Bildungsfehler der Arteria communicans anterior.","volume":"228","author":"Busse","year":"1920"},{"key":"b3","series-title":"AJR","first-page":"345","article-title":"The normal cerebral angiogram.","volume":"65","author":"Curry","year":"1951"},{"key":"b4","series-title":"Zentralbl Neurochir","first-page":"300","article-title":"Die Lageabweichungen der vorderen Hirnarterie im Gefassbild.","volume":"3","author":"Fischer","year":"1938"},{"key":"b5","series-title":"Neurosurgery.","first-page":"1383","article-title":"Distal anterior cerebral artery aneurysms","volume":"2","author":"Fleischer","year":"1985"},{"key":"b6","series-title":"J Neurosurg","first-page":"14","article-title":"Surgical risk as related to time of intervention in the repair of intracranial aneurysms.","volume":"28","author":"Hunt","year":"1968"},{"key":"b7","series-title":"Acta Radiol (Diagn)","first-page":"345","article-title":"Unusual anomaly of anterior cerebral artery.","volume":"9","author":"Isherwood","year":"1969"},{"key":"b8","series-title":"Der Hirnkreislauf.","first-page":"161","article-title":"Das normale Hirngef\u00e4ss-system im angiographischen Bild","author":"Krayenb\u00fchl","year":"1973"},{"key":"b9","series-title":"Cerebral Aneurysms.","first-page":"176","article-title":"Correlation of anterior communicating artery aneurysms with blood circulation at the anterior part of the circle of Willis and its vascular anomalies","author":"Kwak","year":"1979"},{"key":"b10","series-title":"Neurology","first-page":"77","article-title":"A unique anomaly of the intracranial arteries of man.","volume":"19","author":"McCormick","year":"1969"},{"key":"b11","series-title":"J Neurosurg","first-page":"378","article-title":"Carotid-anterior cerebral artery anastomosis. 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The relation of the variations to collateral circulation: anatomical analysis.","volume":"8","author":"Riggs","year":"1963"},{"key":"b14","series-title":"J Anat (Lond)","first-page":"131","article-title":"An unusual human anterior cerebral artery.","volume":"93","author":"Robinson","year":"1959"},{"key":"b15","series-title":"Radiology","first-page":"567","article-title":"Anomalous branches of the internal carotid artery.","volume":"106","author":"Teal","year":"1973"},{"key":"b16","series-title":"Zirkulationsst\u00f6rungen des Gehirns im Serienangiogramm.","author":"T\u00f6nnis","year":"1959"},{"key":"b17","series-title":"Neurology","first-page":"588","article-title":"Agenesis of the internal carotid artery.","volume":"12","author":"Turnbull","year":"1962"},{"key":"b18","series-title":"Acta Anat","first-page":"51","article-title":"Variationstatistische Untersuchungen an den basalen Hirngefassen.","volume":"24","author":"von Mittervvallner","year":"1955"},{"key":"b19","series-title":"J Neurosurg","first-page":"128","article-title":"The pathologic anatomy of ruptured cerebral aneurysms.","volume":"11","author":"Wilson","year":"1954"},{"key":"b20","series-title":"J Anat Physiol","first-page":"289","article-title":"On the arteries forming the circle of Willis.","volume":"22","author":"Windle","year":"1888"},{"key":"b21","series-title":"Microneurosurgery.","first-page":"92","author":"Ya\u015fargil","year":"1984"}],"container-title":["Journal of Neurosurgery"],"original-title":[],"link":[{"URL":"https:\/\/thejns.org\/view\/journals\/j-neurosurg\/75\/6\/article-p950.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/thejns.org\/downloadpdf\/journals\/j-neurosurg\/75\/6\/article-p950.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/thejns.org\/downloadpdf\/journals\/j-neurosurg\/75\/6\/article-p950.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,3,19]],"date-time":"2023-03-19T22:37:05Z","timestamp":1679265425000},"score":1,"resource":{"primary":{"URL":"https:\/\/thejns.org\/view\/journals\/j-neurosurg\/75\/6\/article-p950.xml"}},"subtitle":["Report of two cases"],"short-title":[],"issued":{"date-parts":[[1991,12]]},"references-count":21,"journal-issue":{"issue":"6"},"URL":"https:\/\/doi.org\/10.3171\/jns.1991.75.6.0950","relation":{},"ISSN":["0022-3085"],"issn-type":[{"value":"0022-3085","type":"print"}],"subject":[],"published":{"date-parts":[[1991,12]]}}}