{"created":"2023-08-30T05:42:42.139622+00:00","id":2007129,"links":{},"metadata":{"_buckets":{"deposit":"6b16d17d-f147-459f-8c32-e1f0c97e1a7e"},"_deposit":{"created_by":17,"id":"2007129","owner":"17","owners":[17],"pid":{"revision_id":0,"type":"depid","value":"2007129"},"status":"published"},"_oai":{"id":"oai:nagoya.repo.nii.ac.jp:02007129","sets":["499:508:509:1693372917749"]},"author_link":[],"control_number":"2007129","item_1615768549627":{"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_1615768833594":{"attribute_name":"助成情報","attribute_value_mlt":[{"subitem_award_numbers":{"subitem_award_number":"21H04296","subitem_award_uri":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21H04296/"},"subitem_award_titles":[{"subitem_award_title":"前立腺がん放射線治療におけるカテーテル挿入に代わるMRIによる尿道同定の実現","subitem_award_title_language":"ja"}],"subitem_funder_identifiers":{"subitem_funder_identifier":"https://doi.org/10.13039/501100001691","subitem_funder_identifier_type":"Crossref Funder"},"subitem_funder_names":[{"subitem_funder_name":"日本学術振興会","subitem_funder_name_language":"ja"},{"subitem_funder_name":"Japan Society for the Promotion of Science","subitem_funder_name_language":"en"}]}]},"item_9_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2023-08","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3","bibliographicPageEnd":"517","bibliographicPageStart":"504","bibliographicVolumeNumber":"85","bibliographic_titles":[{"bibliographic_title":"Nagoya Journal of Medical Science","bibliographic_titleLang":"en"}]}]},"item_9_description_4":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"Prostatic urethra identification is crucial in prostate stereotactic body radiotherapy (SBRT) to reduce the risk of urinary toxicity. Although computed tomography (CT) with a catheter is commonly employed, it is invasive, and catheter placement may displace the urethral position, resulting in possible planning inaccuracies. However, magnetic resonance imaging (MRI) can overcome these weaknesses. Accurate urethral identification and minimal daily variation could ensure a highly accurate SBRT. In this study, we investigated the usefulness of a three-dimensional (3D) T2-weighted (T2W) sequence for urethral identification, and the interfractional motion of the prostatic urethra on CT with a catheter and MRI without a catheter for implementing noninvasive SBRT. Thirty-two patients were divided into three groups. The first group underwent MRI without a catheter to evaluate urethral identification by two-dimensional (2D)- and 3D-T2W sequences using mean slice-wise Hausdorff distance (MSHD) and Dice similarity coefficient (DSC) of the contouring by two operators and using visual assessment. The second group provided 3-day MRI data without a catheter using 3D-T2W, and the third provided 3-day CT data with a catheter to evaluate the interfractional motion using MSHD, DSC, and displacement distance (Dd). The MSHD and DSC for the interoperator variability in urethral identification and visual assessment were superior in 3D-T2W than in 2D-T2W. Regarding interfractional motion, the Dd value for prostatic urethra was smaller in MRI than in CT. These findings indicate that the 3D-T2W yielded adequate prostatic urethral identification, and catheter-free MRI resulted in less interfractional motion, suggesting that 3D-T2W MRI without a catheter is a feasible noninvasive approach to performing prostate SBRT.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_9_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.18999/nagjms.85.3.504","subitem_identifier_reg_type":"JaLC"}]},"item_9_publisher_32":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Nagoya University Graduate School of Medicine, School of Medicine","subitem_publisher_language":"en"}]},"item_9_relation_43":{"attribute_name":"関連情報","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"https://www.med.nagoya-u.ac.jp/medlib/nagoya_j_med_sci/853.html","subitem_relation_type_select":"URI"}}]},"item_9_rights_12":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International","subitem_rights_language":"en","subitem_rights_resource":"http://creativecommons.org/licenses/by-nc-nd/4.0/"}]},"item_9_source_id_7":{"attribute_name":"収録物識別子","attribute_value_mlt":[{"subitem_source_identifier":"0027-7622","subitem_source_identifier_type":"PISSN"},{"subitem_source_identifier":"2186-3326","subitem_source_identifier_type":"EISSN"}]},"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":"Kato, Yutaka","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Okumiya, Shintaro","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Okudaira, Kuniyasu","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Ito, Junji","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Kumagai, Motoki","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Kamomae, Takeshi","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Noguchi, Yumiko","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Kawamura, Mariko","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Ishihara, Shunichi","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Naganawa, Shinji","creatorNameLang":"en"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2023-08-30"}],"displaytype":"detail","filename":"08_Kato.pdf","filesize":[{"value":"13.8 MB"}],"format":"application/pdf","licensetype":"license_5","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://nagoya.repo.nii.ac.jp/record/2007129/files/08_Kato.pdf"},"version_id":"46536954-2286-478c-b8a3-fda9a8c7ba7b"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"prostatic urethra","subitem_subject_scheme":"Other"},{"subitem_subject":"catheter","subitem_subject_scheme":"Other"},{"subitem_subject":"magnetic resonance imaging","subitem_subject_scheme":"Other"},{"subitem_subject":"computed tomography","subitem_subject_scheme":"Other"},{"subitem_subject":"interfractional motion","subitem_subject_scheme":"Other"}]},"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":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Urethral identification using three-dimensional magnetic resonance imaging and interfraction urethral motion evaluation for prostate stereotactic body radiotherapy","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Urethral identification using three-dimensional magnetic resonance imaging and interfraction urethral motion evaluation for prostate stereotactic body radiotherapy","subitem_title_language":"en"}]},"item_type_id":"40001","owner":"17","path":["1693372917749"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-08-30"},"publish_date":"2023-08-30","publish_status":"0","recid":"2007129","relation_version_is_last":true,"title":["Urethral identification using three-dimensional magnetic resonance imaging and interfraction urethral motion evaluation for prostate stereotactic body radiotherapy"],"weko_creator_id":"17","weko_shared_id":-1},"updated":"2023-08-31T00:19:28.930434+00:00"}