{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T03:52:38Z","timestamp":1777434758825,"version":"3.51.4"},"reference-count":10,"publisher":"SAGE Publications","issue":"9","license":[{"start":{"date-parts":[[2021,9,1]],"date-time":"2021-09-01T00:00:00Z","timestamp":1630454400000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Acta Radiologica Open"],"published-print":{"date-parts":[[2021,9]]},"abstract":"<jats:p>The cerebral metabolism, such as the oxygen extraction fraction (OEF), in remote ischemic lesions following revascularization for moyamoya disease (MMD) has not yet been fully elucidated. We herein report a patient with an increased OEF in a remote ischemic lesion after revascularization in a case of adult-onset MMD. A 21-year-old woman suffered from a left parietal lobe infarction due to MMD. At 2\u00a0months after onset, left superficial temporal artery (STA)\u2013middle cerebral artery (MCA) bypass and encephalo-myo-synangiosis (EMS) were performed. The postoperative course was uneventful. 15O-positron emission tomography (PET) performed at 2\u00a0months after the first operation revealed an increased OEF in the contralateral (right) frontal lobe that was suspected of being possible remote ischemia. The patient underwent right STA-MCA bypass and EMS. 15O-PET at 14\u00a0days after the second operation revealed an increased OEF in the contralateral (left) occipital lobe that was suspected of potentially being remote ischemia caused by a watershed shift. Two years after the second surgery, left occipital artery (OA)\u2013posterior cerebral artery (PCA) anastomosis and EMS were performed due to transient right hemianopsia. Neither rebleeding nor ischemic complications occurred 2\u00a0years after the third surgery. We need to be alert for the possible progression of PCA stenosis in MMD after revascularization. It might induce remote ischemia after revascularization. OA\u2013PCA bypass is therefore considered to be an effective treatment option in such cases.<\/jats:p>","DOI":"10.1177\/20584601211047241","type":"journal-article","created":{"date-parts":[[2021,9,29]],"date-time":"2021-09-29T11:36:32Z","timestamp":1632915392000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["A case report: An increased oxygen extraction fraction in remote ischemic lesions after revascularization for moyamoya disease with a progression of posterior cerebral artery stenosis"],"prefix":"10.1177","volume":"10","author":[{"given":"Kanako","family":"Kawanami","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Faculty of Medicine, Yamagata University, Yamagata, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3837-0923","authenticated-orcid":false,"given":"Yasuaki","family":"Kokubo","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Faculty of Medicine, Yamagata University, Yamagata, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shinji","family":"Sato","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Faculty of Medicine, Yamagata University, Yamagata, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroshi","family":"Itagaki","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Faculty of Medicine, Yamagata University, Yamagata, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yukihiko","family":"Sonoda","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Faculty of Medicine, Yamagata University, Yamagata, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2021,9,29]]},"reference":[{"key":"bibr1-20584601211047241","doi-asserted-by":"publisher","DOI":"10.1001\/archneur.1969.00480090076012"},{"key":"bibr2-20584601211047241","doi-asserted-by":"publisher","DOI":"10.1007\/s12975-019-00743-6"},{"key":"bibr3-20584601211047241","doi-asserted-by":"publisher","DOI":"10.3171\/jns.1992.77.1.0084"},{"key":"bibr4-20584601211047241","doi-asserted-by":"publisher","DOI":"10.1007\/s10143-017-0845-9"},{"key":"bibr5-20584601211047241","doi-asserted-by":"publisher","DOI":"10.3171\/2013.6.JNS122099"},{"key":"bibr6-20584601211047241","first-page":"1613","volume":"37","author":"Yamada I","year":"1996","journal-title":"J Nucl Med"},{"key":"bibr7-20584601211047241","doi-asserted-by":"publisher","DOI":"10.3171\/2010.4.PEDS09478"},{"key":"bibr8-20584601211047241","doi-asserted-by":"publisher","DOI":"10.1007\/s00701-014-2136-3"},{"key":"bibr9-20584601211047241","doi-asserted-by":"publisher","DOI":"10.4103\/sni.sni_18_18"},{"key":"bibr10-20584601211047241","doi-asserted-by":"publisher","DOI":"10.3171\/2018.1.PEDS17367"}],"container-title":["Acta Radiologica Open"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/20584601211047241","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/20584601211047241","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/20584601211047241","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T11:54:44Z","timestamp":1777377284000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/20584601211047241"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,9]]},"references-count":10,"journal-issue":{"issue":"9","published-print":{"date-parts":[[2021,9]]}},"alternative-id":["10.1177\/20584601211047241"],"URL":"https:\/\/doi.org\/10.1177\/20584601211047241","relation":{},"ISSN":["2058-4601","2058-4601"],"issn-type":[{"value":"2058-4601","type":"print"},{"value":"2058-4601","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,9]]},"article-number":"20584601211047241"}}