{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,27]],"date-time":"2025-09-27T08:26:21Z","timestamp":1758961581353},"reference-count":29,"publisher":"Georg Thieme Verlag KG","issue":"02","license":[{"start":{"date-parts":[[2022,8,25]],"date-time":"2022-08-25T00:00:00Z","timestamp":1661385600000},"content-version":"vor","delay-in-days":85,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Asian J Neurosurg"],"published-print":{"date-parts":[[2022,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Although Onyx is approved as an embolic material for arteriovenous malformation (AVM) and dural arteriovenous fistula (dAVF), metal artifacts due to Onyx on CT remain problematic. We report the feasibility of a metal artifact reduction (MAR) algorithm on CT angiography (CTA) in the planning of direct surgery of dAVF after transarterial Onyx embolization. A 45-year-old male patient presented with right pulsatile tinnitus, and cerebral angiography demonstrated right tentorial dAVF. As the dAVF had not completely disappeared even after Onyx transarterial embolization, we planned direct surgery. Evaluation of the lesion was difficult on normal preoperative CTA because of Onyx artifacts, but CTA using MAR enabled a detailed planning of direct surgery. Direct surgery was performed through right retrosigmoid craniotomy. Referencing CTA using MAR, we identified the draining veins originating from the main drainer, which were coagulated and cut, achieving complete occlusion of the dAVF. His symptoms disappeared with no postoperative complications. CT angiography using MAR was useful for planning direct surgery after Onyx embolization. As the incidence of direct surgery after transarterial Onyx embolization for AVM or dAVF is increasing, MAR on CTA will become more important.<\/jats:p>","DOI":"10.1055\/s-0042-1750386","type":"journal-article","created":{"date-parts":[[2022,8,26]],"date-time":"2022-08-26T01:01:02Z","timestamp":1661475662000},"page":"337-341","source":"Crossref","is-referenced-by-count":1,"title":["Feasibility of Metal Artifact Reduction on CT Angiography for Planning Direct Surgery of Tentorial dAVF after Onyx Embolization"],"prefix":"10.1055","volume":"17","author":[{"given":"Kanji","family":"Nakagawa","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Kansai Rosai Hospital, Amagaski, Hyogo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shingo","family":"Toyota","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Kansai Rosai Hospital, Amagaski, Hyogo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takeshi","family":"Shimizu","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Kansai Rosai Hospital, Amagaski, Hyogo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomoaki","family":"Murakami","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Kansai Rosai Hospital, Amagaski, Hyogo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takuyu","family":"Taki","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Kansai Rosai Hospital, Amagaski, Hyogo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"194","published-online":{"date-parts":[[2022,8,25]]},"reference":[{"issue":"03","key":"ref1","doi-asserted-by":"crossref","first-page":"265","DOI":"10.1136\/neurintsurg-2014-011427","article-title":"Neurological outcomes and cure rates of embolization of brain arteriovenous 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Lawton","year":"2008","journal-title":"Neurosurgery"},{"issue":"09","key":"ref8","doi-asserted-by":"crossref","first-page":"1798","DOI":"10.3174\/ajnr.A3519","article-title":"Tentorial dural fistulas: endovascular management and description of the medial dural-tentorial branch of the superior cerebellar artery","volume":"34","author":"J V Byrne","year":"2013","journal-title":"AJNR Am J Neuroradiol"},{"issue":"06","key":"ref9","doi-asserted-by":"crossref","first-page":"839","DOI":"10.3171\/jns.1990.72.6.0839","article-title":"Intracranial dural arteriovenous malformations: factors predisposing to an aggressive neurological course","volume":"72","author":"I A Awad","year":"1990","journal-title":"J Neurosurg"},{"issue":"05","key":"ref10","doi-asserted-by":"crossref","first-page":"1233","DOI":"10.1161\/01.STR.0000014772.02908.44","article-title":"Clinical course of cranial dural arteriovenous fistulas with long-term persistent cortical venous reflux","volume":"33","author":"J M van 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