{"created":"2023-05-15T14:35:55.843369+00:00","id":46235,"links":{},"metadata":{"_buckets":{"deposit":"26f4425c-137e-47b1-b1fe-21471251b7dd"},"_deposit":{"created_by":1,"id":"46235","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"46235"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00046235","sets":["1"]},"author_link":["460415","460414","460416","460422","460424","460423","460419","460417","460421","460420","460425","460418"],"item_8_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2011-04","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"148","bibliographicPageStart":"140","bibliographicVolumeNumber":"57","bibliographic_titles":[{"bibliographic_title":"NeuroImage"}]}]},"item_8_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Spin-echo diffusion-weighted functional MRI (DW-fMRI) was performed on a rat forepaw electrostimulation model at 7 T. This small animal model used electric (rather than visual) stimulation and allowed DW-fMRI experiments to be performed over a broader range of acquisition parameters than previous work on humans and cats. Resting state experiments with injections of ultra-small superparamagnetic iron oxide (USPIO) were also used to investigate the effects of gradient coupling on the signal change. The experiments were performed over five b-values (0, 200, 800, 1400 and 2000s/mm(2)) and three echo-times (30, 60 and 90 ms). Alterations to the stimulation-induced response with respect to TE and b-value were evaluated in two intervals: the positive stimulus-correlated response (5-20s after stimulus onset) and the post-stimulus undershoot (27-40s). There was no strong dependence of the signal change on b-value for any of the intervals or TEs. Similarly, changes to the apparent transverse relaxation rate showed no clear dependence on b-value. In contrast to previous DW-fMRI studies, the simplest explanation for the observed data is a single-compartment signal model with the functional signal changes probably corresponding to extravascular SE-BOLD. Experiments with USPIO suggested that at 7 T and within the range of parameters used, the influence of gradient coupling may be sufficient to explain minor DW-fMRI signal changes.","subitem_description_type":"Abstract"}]},"item_8_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1016/j.neuroimage.2011.04.006","subitem_relation_type_select":"DOI"}}]},"item_8_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1053-8119","subitem_source_identifier_type":"ISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Joonas, Autio"}],"nameIdentifiers":[{"nameIdentifier":"460414","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kershaw, Jeffrey"}],"nameIdentifiers":[{"nameIdentifier":"460415","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Shibata, Sayaka"}],"nameIdentifiers":[{"nameIdentifier":"460416","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Obata, Takayuki"}],"nameIdentifiers":[{"nameIdentifier":"460417","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kanno, Iwao"}],"nameIdentifiers":[{"nameIdentifier":"460418","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Aoki, Ichio"}],"nameIdentifiers":[{"nameIdentifier":"460419","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"ヨーナス オーティオ","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"460420","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ｋｅｒｓｈａｗ Ｊｅｆｆｒｅｙ","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"460421","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"柴田 さやか","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"460422","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小畠 隆行","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"460423","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"菅野 巖","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"460424","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"青木 伊知男","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"460425","nameIdentifierScheme":"WEKO"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"High b-value diffusion-weighted fMRI in a rat forepaw electrostimulation model at 7T","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"High b-value diffusion-weighted fMRI in a rat forepaw electrostimulation model at 7T"}]},"item_type_id":"8","owner":"1","path":["1"],"pubdate":{"attribute_name":"公開日","attribute_value":"2011-12-26"},"publish_date":"2011-12-26","publish_status":"0","recid":"46235","relation_version_is_last":true,"title":["High b-value diffusion-weighted fMRI in a rat forepaw electrostimulation model at 7T"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T23:54:16.208814+00:00"}