{"created":"2023-05-15T09:04:26.230300+00:00","id":5510,"links":{},"metadata":{"_buckets":{"deposit":"d1c1b39b-899b-41a6-a9a0-800b7664dcdb"},"_deposit":{"created_by":11,"id":"5510","owners":[11],"pid":{"revision_id":0,"type":"depid","value":"5510"},"status":"published"},"_oai":{"id":"oai:hirosaki.repo.nii.ac.jp:00005510","sets":["557:561:958"]},"author_link":["19819","10772","19823","13443","19821","19820","13431","13703","19830","19822","19828","19826","13437","10781","13698","19825","11499","13693","19831","11510","19829","11647","11490","11633","11640","10764","19824"],"item_3_alternative_title_21":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Fundamental Study on the Effect of Applying Intelligent Grid to Medical Images"}]},"item_3_alternative_title_22":{"attribute_name":"タイトル（ヨミ）","attribute_value_mlt":[{"subitem_alternative_title":"イヨウ　ガゾウ　ニ　キヨ　スル　Intelligent-Grid（ インテリジェントグリッド）テキヨウ　コウカ　ニ　カンスル　キソテキ　ケントウ"}]},"item_3_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2019-03-15","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1-4","bibliographicPageEnd":"43","bibliographicPageStart":"35","bibliographicVolumeNumber":"69","bibliographic_titles":[{"bibliographic_title":"弘前医学"}]}]},"item_3_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"医用画像のIntelligent-Grid （IG）は，コントラスト改善処理および粒状性改善処理により，実グリッド（Realgrid: RG）撮影を仮想的に再現する技術である．IG の適用は，RG 時に問題となるX線斜入に伴う濃度ムラが発生しない等の利点があり，病室や手術室等の回診撮影に期待されているが，IG の各グリッド比の効果は明確になっていない．そこで，ファントム実験により，散乱線含有率（SRC），コントラスト，コントラストノイズ比（CNR）を測定した．その結果IG のSRC 低下を確認し，コントラストは腹部を想定した70 kV ではグリッド未使用（Without grid: WG）に対し全グリッド比（IG3:1, IG6:1, IG8:1）で，胸部を想定した90 kV ではIG3:1 でコントラスト向上を確認した．しかし，90 kV のIG6:1, IG8:1 のコントラストはWG よりも低値であった．CNR はファントム厚30 cm ではWG に対し全グリッド比で向上，20 cm では同程度，10 cm では同程度か逆に低下することが判明した．このことから，管電圧ならびに体厚に応じたIG 適用の必要性が示唆された．\nIntelligent Grid （IG） is a technique to virtually reproduce the real grid （RG） in medical imaging to improve both contrast and graininess. Application of IG eliminates the unevenness in density often seen in images of RGs due to X-ray inclination. Although IG is expected in bedside radiography, the effect for grid ratios of IG is not clear. Therefore, we measured the scattered radiation content（ SRC）, contrast, and contrast-to-noise ratio（ CNR） in a phantom experiment. Results of the experiment confirmed a decrease in the SRC with application of IG. The contrast was confirmed to be improved compared to without the grid （WG） at all grid ratios （IG3:1, IG6:1, IG8:1） at 70 kV assuming the abdomen and at IG3:1 at 90 kV assuming the chest. However, the contrast of IG6:1 and IG8:1 at 90 kV was lower than that of WG. Furthermore, the CNR was found to be improved compared to WG at all grid ratios at a phantom thickness of 30 cm, at the same level at 20 cm, and at the same level or lower at 10 cm. These results demonstrate the need to apply IG according to the tube voltage and body thickness.","subitem_description_type":"Abstract"}]},"item_3_full_name_2":{"attribute_name":"著者(ヨミ)","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"11499","nameIdentifierScheme":"WEKO"}],"names":[{"name":"クドウ, コウセイ"}]},{"nameIdentifiers":[{"nameIdentifier":"13437","nameIdentifierScheme":"WEKO"}],"names":[{"name":"オサナイ, ミノル"}]},{"nameIdentifiers":[{"nameIdentifier":"11640","nameIdentifierScheme":"WEKO"}],"names":[{"name":"ツシマ, メグミ"}]},{"nameIdentifiers":[{"nameIdentifier":"19823","nameIdentifierScheme":"WEKO"}],"names":[{"name":"ヒロタ, ジュンイチ"}]},{"nameIdentifiers":[{"nameIdentifier":"19824","nameIdentifierScheme":"WEKO"}],"names":[{"name":"ムラカミ, ショウ"}]},{"nameIdentifiers":[{"nameIdentifier":"19825","nameIdentifierScheme":"WEKO"}],"names":[{"name":"ナラキ, サトシ"}]},{"nameIdentifiers":[{"nameIdentifier":"19826","nameIdentifierScheme":"WEKO"}],"names":[{"name":"スズキ, カツマサ"}]},{"nameIdentifiers":[{"nameIdentifier":"10781","nameIdentifierScheme":"WEKO"}],"names":[{"name":"アオキ, マサヒコ"}]},{"nameIdentifiers":[{"nameIdentifier":"13698","nameIdentifierScheme":"WEKO"}],"names":[{"name":"ホソカワ, ヨウイチロウ"}]}]},"item_3_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"11510","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Kudo, Kohsei"}]},{"nameIdentifiers":[{"nameIdentifier":"13431","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"100000071","nameIdentifierScheme":"研究者総覧","nameIdentifierURI":"http://hue2.jm.hirosaki-u.ac.jp/html/100000071_ja.html"}],"names":[{"name":"Osanai, Minoru"}]},{"nameIdentifiers":[{"nameIdentifier":"11647","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Tsushima, Megumi"}]},{"nameIdentifiers":[{"nameIdentifier":"19828","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Hirota, 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Yoichiro"}]}]},"item_3_publisher_35":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"弘前大学大学院医学研究科・弘前医学会"}]},"item_3_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00211444","subitem_source_identifier_type":"NCID"}]},"item_3_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0439-1721","subitem_source_identifier_type":"ISSN"}]},"item_3_subject_19":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"490","subitem_subject_scheme":"NDC"}]},"item_3_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"弘前大学大学院保健学研究科放射線技術科学領域"},{"subitem_text_value":"弘前大学大学院保健学研究科放射線技術科学領域"},{"subitem_text_value":"弘前大学大学院保健学研究科放射線技術科学領域"},{"subitem_text_value":"弘前大学大学院保健学研究科放射線技術科学領域"},{"subitem_text_value":"弘前大学医学部附属病院医療技術部放射線部門"},{"subitem_text_value":"弘前大学医学部附属病院医療技術部放射線部門"},{"subitem_text_value":"弘前大学医学部附属病院医療技術部放射線部門"},{"subitem_text_value":"弘前大学医学部附属病院医療技術部放射線部門"},{"subitem_text_value":"弘前大学大学院保健学研究科放射線技術科学領域"}]},"item_3_version_type_18":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"工藤, 幸清"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"小山内, 暢"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"對馬, 恵"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"廣田, 淳一"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"村上, 翔"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"楢木, 聡"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"須崎, 勝正"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"青木, 昌彦"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"細川, 洋一郎"}],"nameIdentifiers":[{},{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-04-09"}],"displaytype":"detail","filename":"HirosakiMedJ_69(1-4)_35.pdf","filesize":[{"value":"546.7 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"HirosakiMedJ_69(1-4)_35.pdf","url":"https://hirosaki.repo.nii.ac.jp/record/5510/files/HirosakiMedJ_69(1-4)_35.pdf"},"version_id":"e8a30a23-b035-42fa-abff-d48a26813524"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"インテリジェントグリッド","subitem_subject_scheme":"Other"},{"subitem_subject":"散乱線含有率","subitem_subject_scheme":"Other"},{"subitem_subject":"コントラスト","subitem_subject_scheme":"Other"},{"subitem_subject":"コントラストノイズ比","subitem_subject_scheme":"Other"},{"subitem_subject":"Intelligent Grid","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Scattered radiation content","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Contrast","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Contrast-to-noise ratio","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"医用画像に寄与するIntelligent-Grid（ インテリジェントグリッド）適用効果に関する基礎的検討","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"医用画像に寄与するIntelligent-Grid（ インテリジェントグリッド）適用効果に関する基礎的検討"}]},"item_type_id":"3","owner":"11","path":["958"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-04-09"},"publish_date":"2019-04-09","publish_status":"0","recid":"5510","relation_version_is_last":true,"title":["医用画像に寄与するIntelligent-Grid（ インテリジェントグリッド）適用効果に関する基礎的検討"],"weko_creator_id":"11","weko_shared_id":-1},"updated":"2023-05-15T12:34:16.179831+00:00"}