{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T17:54:53Z","timestamp":1786125293933,"version":"build-2736575974"},"reference-count":52,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["NEUROSURGERY","NEUROS"],"published-print":{"date-parts":[[2017,12]]},"abstract":"Abstract<\/jats:title>\n \n BACKGROUND<\/jats:title>\n Paraclinoid aneurysms are among the most challenging aneurysms to treat. Computed tomography (CT) angiography helps in evaluating the radiological characteristics of these aneurysms next to bony structures.<\/jats:p>\n <\/jats:sec>\n \n OBJECTIVE<\/jats:title>\n To present the CT angiography characteristics of paraclinoid aneurysms in order to better understand such pathology.<\/jats:p>\n <\/jats:sec>\n \n METHODS<\/jats:title>\n The study examined CT angiography-based anatomical characteristics obtained retrospectively from 136 patients with 144 paraclinoid aneurysms selected from single-defined catchment populations in Finland. We examined the diameters of the parent artery (internal carotid artery), the location of the aneurysm, its dimensions (width, height, neck), and aneurysm wall irregularity.<\/jats:p>\n <\/jats:sec>\n \n RESULTS<\/jats:title>\n \n We analyzed 144 paraclinoid aneurysms in 136 patients admitted to the hospital during 2000-2014. Multivariable analysis reveals that rupture aneurysms have the following radiological features: aneurysm larger than 5 mm in diameter (\n P<\/jats:italic>\n = .006), irregular wall (\n P<\/jats:italic>\n = .046), superior location, larger aspect ratio (\n P<\/jats:italic>\n = .039), and neck wider than parent artery (\n P<\/jats:italic>\n < .001).\n <\/jats:p>\n <\/jats:sec>\n \n CONCLUSION<\/jats:title>\n Smaller diameter of the internal carotid artery and superior location, as well as a large and irregular aneurysm wall, are radiological characteristics of ruptured paraclinoid aneurysms, which CT angiography can measure easily.<\/jats:p>\n <\/jats:sec>","DOI":"10.1093\/neuros\/nyx157","type":"journal-article","created":{"date-parts":[[2017,3,17]],"date-time":"2017-03-17T16:10:50Z","timestamp":1489767050000},"page":"949-957","source":"Crossref","is-referenced-by-count":8,"title":["Anatomic Features of Paraclinoid Aneurysms: Computed Tomography Angiography Study of 144 Aneurysms in 136 Consecutive Patients"],"prefix":"10.1227","volume":"81","author":[{"given":"Ahmadreza","family":"Rafiei","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ahmad","family":"Hafez","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Behnam Rezai","family":"Jahromi","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Riku","family":"Kivisaari","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bruno","family":"Canato","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joham","family":"Choque","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Roberto","family":"Colasanti","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sharafeddin","family":"Fransua","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hanna","family":"Lehto","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hugo","family":"Andrade-Barazarte","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juha","family":"Hernesniemi","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2017,12]]},"reference":[{"key":"bib1-20231011","first-page":"41","article-title":"Carotid-ophthalmic aneurysms","volume":"5","author":"Almeida","year":"1976","journal-title":"Surg Neurol"},{"key":"bib2-20231011","first-page":"49","article-title":"Direct attack on carotid ophthalmic and large internal carotid aneurysms","volume":"8","author":"Benedetti","year":"1977","journal-title":"Surg Neurol"},{"key":"bib3-20231011","doi-asserted-by":"crossref","first-page":"438","DOI":"10.3171\/jns.1975.42.4.0438","article-title":"Management of carotid-ophthalmic aneurysms","volume":"42","author":"Guidetti","year":"1975","journal-title":"J Neurosurg"},{"key":"bib4-20231011","first-page":"155","article-title":"Carotid-ophthalmic aneurysms: direct microsurgical approach","volume":"8","author":"Yasargil","year":"1977","journal-title":"Surg Neurol"},{"key":"bib5-20231011","doi-asserted-by":"crossref","first-page":"677","DOI":"10.3171\/jns.1990.72.5.0677","article-title":"Aneurysms of the ophthalmic segment. 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