{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T17:19:40Z","timestamp":1782839980531,"version":"3.54.5"},"reference-count":22,"publisher":"SAGE Publications","issue":"9","license":[{"start":{"date-parts":[[2020,8,31]],"date-time":"2020-08-31T00:00:00Z","timestamp":1598832000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"name":"Central Medical Service (CMS) Research Fund"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Acta Radiol"],"published-print":{"date-parts":[[2021,9]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Although time-of-flight magnetic resonance angiography (TOF-MRA) is widely used, it has limited usefulness for follow-up after stent-assisted coil embolization. Contrast-enhanced MRA (CE-MRA) and ultrashort echo time MRA have been suggested as alternative methods for visualization after this procedure.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To compare efficacy and usefulness of pointwise encoding time reduction with radial acquisition (PETRA) sequence in subtraction-based MRA (qMRA), TOF-MRA, and CE-MRA during the follow-up after Neuroform Atlas stent-assisted coil embolization for intracranial aneurysms.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Material and Methods<\/jats:title>\n                    <jats:p>This retrospective study included 23 patients with 24 aneurysms who underwent Neuroform Atlas stent-assisted coil embolization for intracranial aneurysms. All patients were evaluated with PETRA qMRA, TOF-MRA, and CE-MRA at the same follow-up session. The flow within stents, occlusion status, and presence of pseudo-stenosis were evaluated; inter-observer and intermodality agreements for the three methods were also graded.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The mean score for flow visualization within the stents was significantly higher for PETRA qMRA and CE-MRA than for TOF-MRA (although no significant difference was found between PETRA qMRA and CE-MRA). Good inter-observer agreement was observed for each modality. PETRA qMRA and CE-MRA were more consistent with digital subtraction angiography (DSA) than TOF-MRA for aneurysm occlusion status. The intermodality agreement was better between PETRA qMRA and DSA, and between CE-MRA and DSA, than between DSA and TOF-MRA. Pseudo-stenosis was most frequently observed in TOF-MRA, followed by CE-MRA and PETRA qMRA.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>PETRA qMRA is useful for evaluating the parent artery patency and occlusion status of aneurysms after Neuroform Atlas stent-assisted coil embolization.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/0284185120952784","type":"journal-article","created":{"date-parts":[[2020,9,1]],"date-time":"2020-09-01T01:08:13Z","timestamp":1598922493000},"page":"1193-1199","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":10,"title":["Usefulness of pointwise encoding time reduction with radial acquisition sequence in subtraction-based magnetic resonance angiography for follow-up of the Neuroform Atlas stent-assisted coil embolization for cerebral aneurysms"],"prefix":"10.1177","volume":"62","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4765-0727","authenticated-orcid":false,"given":"Young Jin","family":"Heo","sequence":"first","affiliation":[{"name":"Department of Radiology, Inje University Busan Paik Hospital, Busan, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4912-9302","authenticated-orcid":false,"given":"Hae Woong","family":"Jeong","sequence":"additional","affiliation":[{"name":"Department of Radiology, Inje University Busan Paik Hospital, Busan, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Donghyun","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Radiology, Inje University Busan Paik Hospital, Busan, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4632-4951","authenticated-orcid":false,"given":"Jin Wook","family":"Baek","sequence":"additional","affiliation":[{"name":"Department of Radiology, Inje University Busan Paik Hospital, Busan, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ji-yeon","family":"Han","sequence":"additional","affiliation":[{"name":"Department of Radiology, Inje University Busan Paik Hospital, Busan, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3941-6989","authenticated-orcid":false,"given":"Hye Jung","family":"Choo","sequence":"additional","affiliation":[{"name":"Department of Radiology, Inje University Busan Paik Hospital, Busan, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sung Tae","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Inje University Busan Paik Hospital, Busan, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Young Gyun","family":"Jeong","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Inje University Busan Paik Hospital, Busan, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sung-Chul","family":"Jin","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Inje University Haeundae Paik Hospital, Busan, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2020,8,31]]},"reference":[{"key":"bibr1-0284185120952784","doi-asserted-by":"publisher","DOI":"10.1001\/jamaneurol.2018.4165"},{"issue":"8","key":"bibr2-0284185120952784","first-page":"CD003085","author":"Lindgren A","year":"2018","journal-title":"Cochrane Database Syst Rev"},{"key":"bibr3-0284185120952784","doi-asserted-by":"publisher","DOI":"10.3171\/2015.2.JNS142557"},{"key":"bibr4-0284185120952784","doi-asserted-by":"publisher","DOI":"10.1148\/radiol.2433060536"},{"key":"bibr5-0284185120952784","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.219.1.r01mr06108"},{"key":"bibr6-0284185120952784","doi-asserted-by":"publisher","DOI":"10.1016\/0730-725X(94)92201-2"},{"key":"bibr7-0284185120952784","doi-asserted-by":"publisher","DOI":"10.3174\/ajnr.A5033"},{"key":"bibr8-0284185120952784","doi-asserted-by":"publisher","DOI":"10.3174\/ajnr.A5223"},{"key":"bibr9-0284185120952784","doi-asserted-by":"publisher","DOI":"10.1007\/s00330-017-4794-z"},{"key":"bibr10-0284185120952784","doi-asserted-by":"publisher","DOI":"10.1093\/neuros\/nyz421"},{"key":"bibr11-0284185120952784","doi-asserted-by":"publisher","DOI":"10.1177\/159101991201800305"},{"key":"bibr12-0284185120952784","doi-asserted-by":"publisher","DOI":"10.1097\/RCT.0b013e31822bd498"},{"key":"bibr13-0284185120952784","unstructured":"Natsuaki Y, Grimm R, Grodzki D, et\u00a0al. PETRA quiet MRA: Improved Robustness with 3D Elastic Cross-Registration. 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