{"_buckets": {"deposit": "bfde8dad-778f-4860-b7de-373a7f9bac13"}, "_deposit": {"id": "21510", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "21510"}, "status": "published"}, "_oai": {"id": "oai:nagoya.repo.nii.ac.jp:00021510", "sets": ["501"]}, "author_link": ["62764", "62765", "62766", "62767", "62768", "62769", "62770", "62771", "62772", "62773", "62774", "62775"], "item_10_alternative_title_19": {"attribute_name": "その他のタイトル", "attribute_value_mlt": [{"subitem_alternative_title": "Evaluation of Image Quality of Brain CT Angiography Reconstructed Using Adaptive Statistical Iterative Reconstruction Techniques", "subitem_alternative_title_language": "en"}]}, "item_10_biblio_info_6": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2012-11-16", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "316", "bibliographicPageEnd": "10", "bibliographicPageStart": "5", "bibliographicVolumeNumber": "112", "bibliographic_titles": [{"bibliographic_title": "電子情報通信学会技術研究報告. IMQ, イメージ・メディア・クオリティ", "bibliographic_titleLang": "ja"}]}]}, "item_10_description_4": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "近年、逐次近似法と呼ばれる画像再構成法が開発され、この方法で再構成されたCT画像は従来よりもノイズが少なく、滑らかな画像になると言われている。その一方で、逐次回数と共に病変が不鮮鋭になるという問題点も指摘されている。そこで、本研究では、Toeplitz行列を用いた新たな鮮鋭度評価法を考案した上で、逐次近似再構成画像と従来の再構成画像を比較し、それらの鮮鋭度を評価した。さらに、コントラスト分解能についても定量解析し、鮮鋭度の評価結果と合わせて、画質特性と被ばく線量との関係について検討した。", "subitem_description_language": "ja", "subitem_description_type": "Abstract"}, {"subitem_description": "Recently, image reconstruction method called Adaptive Iterative Statistical Reconstruction (ASIR) has been developed. This reconstruction algorithm makes it possible to reduce image noise on CT images. However, the role of ASIR in head CT angiography was never reported to date, to our knowledge. Therefore, it is clinical useful to evaluate the image quality of head CT angiography reconstructed using ASIR algorithm. In this study, we have devised the new method for evaluate the sharpness of CT images using \"Toeplitz matrix\" and quantitatively assessed the sharpness of artery contours on CT angiography reconstructed using ASIR algorithm. The contrast resolution of CT angiography with ASIR reconstruction was also evaluated.", "subitem_description_language": "en", "subitem_description_type": "Abstract"}]}, "item_10_identifier_60": {"attribute_name": "URI", "attribute_value_mlt": [{"subitem_identifier_type": "URI", "subitem_identifier_uri": "http://ci.nii.ac.jp/naid/110009641613/"}, {"subitem_identifier_type": "HDL", "subitem_identifier_uri": "http://hdl.handle.net/2237/23657"}]}, "item_10_publisher_32": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "一般社団法人電子情報通信学会", "subitem_publisher_language": "ja"}]}, "item_10_relation_43": {"attribute_name": "関連情報", "attribute_value_mlt": [{"subitem_relation_type": "isVersionOf", "subitem_relation_type_id": {"subitem_relation_type_id_text": "http://ci.nii.ac.jp/naid/110009641613/", "subitem_relation_type_select": "URI"}}]}, "item_10_rights_12": {"attribute_name": "権利", "attribute_value_mlt": [{"subitem_rights": "(c)一般社団法人電子情報通信学会 本文データは学協会の許諾に基づきCiNiiから複製したものである", "subitem_rights_language": "ja"}]}, "item_10_select_15": {"attribute_name": "著者版フラグ", "attribute_value_mlt": [{"subitem_select_item": "publisher"}]}, "item_10_source_id_7": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "0913-5685", "subitem_source_identifier_type": "PISSN"}]}, "item_1615787544753": {"attribute_name": "出版タイプ", "attribute_value_mlt": [{"subitem_version_resource": "http://purl.org/coar/version/c_970fb48d4fbd8a85", "subitem_version_type": "VoR"}]}, "item_access_right": {"attribute_name": "アクセス権", "attribute_value_mlt": [{"subitem_access_right": "open access", "subitem_access_right_uri": "http://purl.org/coar/access_right/c_abf2"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "高瀬, 郁子", "creatorNameLang": "ja"}], "nameIdentifiers": [{"nameIdentifier": "62764", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "遠地, 志太", "creatorNameLang": "ja"}], "nameIdentifiers": [{"nameIdentifier": "62765", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "川浦, 稚代", "creatorNameLang": "ja"}], "nameIdentifiers": [{"nameIdentifier": "62766", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "森, 政樹", "creatorNameLang": "ja"}], "nameIdentifiers": [{"nameIdentifier": "62767", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "池田, 充", "creatorNameLang": "ja"}], "nameIdentifiers": [{"nameIdentifier": "62768", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "今井, 國治", "creatorNameLang": "ja"}], "nameIdentifiers": [{"nameIdentifier": "62769", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Takase, Ikuko", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "62770", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Enchi, Yukihiro", "creatorNameLang": "en"}], 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"filename": "110009641613.pdf", "filesize": [{"value": "859.4 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_note", "mimetype": "application/pdf", "size": 859400.0, "url": {"label": "110009641613.pdf", "objectType": "fulltext", "url": "https://nagoya.repo.nii.ac.jp/record/21510/files/110009641613.pdf"}, "version_id": "e8849c77-7ccb-456e-b8b0-35ebe25e677c"}]}, "item_keyword": {"attribute_name": "キーワード", "attribute_value_mlt": [{"subitem_subject": "頭部CTA画像", "subitem_subject_scheme": "Other"}, {"subitem_subject": "逐次近似法", "subitem_subject_scheme": "Other"}, {"subitem_subject": "鮮鋭度", "subitem_subject_scheme": "Other"}, {"subitem_subject": "コントラスト分解能", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Head CTA", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Adaptive Iterative Statistical Reconstruction", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Sharpness", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Contrast Resolution", "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": "逐次近似法を用いた脳動脈CT画像の画質評価(医用画像とIMQ一般)", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "逐次近似法を用いた脳動脈CT画像の画質評価(医用画像とIMQ一般)", "subitem_title_language": "ja"}]}, "item_type_id": "10", "owner": "1", "path": ["501"], "permalink_uri": "http://hdl.handle.net/2237/23657", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2016-02-29"}, "publish_date": "2016-02-29", "publish_status": "0", "recid": "21510", "relation": {}, "relation_version_is_last": true, "title": ["逐次近似法を用いた脳動脈CT画像の画質評価(医用画像とIMQ一般)"], "weko_shared_id": -1}