{"created":"2023-05-15T14:45:26.722234+00:00","id":62098,"links":{},"metadata":{"_buckets":{"deposit":"cb122105-0e24-4c3d-9f76-f1f71b9efdc5"},"_deposit":{"created_by":1,"id":"62098","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"62098"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00062098","sets":["10:29"]},"author_link":["614163","614169","614161","614160","614162","614164","614166","614168","614159","614167","614158","614165"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2007-04-15","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"【目的】拡散強調画像(DWI)がスクリーニングとして広く用いられつつあるが、病変があるにもかかわらずDWIで抽出されない、または信号が弱い偽陰性病変が時に経験される。今回われわれはT2強調画像で様々な信号を示す悪性黒色腫症例を対象として、そのT2強調画像の信号と拡散強調画像の信号との関係を調べた。【方法】平成17年4月から平成18年9月までに当院を受診した悪性黒色腫症例53例のうち、腫瘍が同定され、ROIを取ることが可能であった26例(男性11例、女性15例、30〜80歳、平均62.8歳)を対象とした。頭頸部が23例(鼻腔副鼻腔16､眼窩2､舌2､口蓋、耳下腺、リンパ節各1)、それ以外が3例(仙骨、膣、距骨各1)であった。使用装置は1.5T MRI。拡散強調画像はsingle-shot EPIで脂肪抑制はSTIRを使用、b値=0、1,000とした。T2信号とDWIの信号は同一スライスで腫瘍部分と筋肉にROIをとりその信号比(t/m比：tumor/muscle)で表した。同じ部位でADC値も測定した。統計はSpearmanの順位相関を用いた。【成績】T2信号のt/m比(T2t/m)とDWIのt/m比(DWIt/m)は強い正の相関を示した(DWIt/m=−．408＋1.805×T2t/m, ρ=.746, p=.0002)。一方でT2信号のT/M比とADC値は相関がなかった(.865＋.018×T2t/m, ρ=.028, p=.89)。【結論】DWIにはT2 shine-through現象が知られているが、逆にT2信号が低い腫瘍の場合はDWIで抽出不良となる、T2-related signal lossが起こる場合がある。DWIでスクリーニングを行う場合は注意が必要である。","subitem_description_type":"Abstract"}]},"item_10005_description_6":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）","attribute_value_mlt":[{"subitem_description":"第66回日本医学放射線学会学術集会","subitem_description_type":"Other"}]},"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":"岸本, 理和"}],"nameIdentifiers":[{"nameIdentifier":"614158","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"神立, 進"}],"nameIdentifiers":[{"nameIdentifier":"614159","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小畠, 隆行"}],"nameIdentifiers":[{"nameIdentifier":"614160","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"溝江, 純悦"}],"nameIdentifiers":[{"nameIdentifier":"614161","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"鎌田, 正"}],"nameIdentifiers":[{"nameIdentifier":"614162","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"辻井, 博彦"}],"nameIdentifiers":[{"nameIdentifier":"614163","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"岸本 理和","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"614164","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"神立 進","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"614165","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小畠 隆行","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"614166","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"溝江 純悦","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"614167","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"鎌田 正","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"614168","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"辻井 博彦","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"614169","nameIdentifierScheme":"WEKO"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference object","resourceuri":"http://purl.org/coar/resource_type/c_c94f"}]},"item_title":"拡散強調画像（DWI） におけるT2-related signal loss：悪性黒色腫を用いたT2信号とDWI信号の関係","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"拡散強調画像（DWI） におけるT2-related signal loss：悪性黒色腫を用いたT2信号とDWI信号の関係"}]},"item_type_id":"10005","owner":"1","path":["29"],"pubdate":{"attribute_name":"公開日","attribute_value":"2007-05-07"},"publish_date":"2007-05-07","publish_status":"0","recid":"62098","relation_version_is_last":true,"title":["拡散強調画像（DWI） におけるT2-related signal loss：悪性黒色腫を用いたT2信号とDWI信号の関係"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T21:34:43.304212+00:00"}