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Five different sequences with different parameters including respiration-triggered acquisition or multiple breath-holding, slice thicknesses of 3 or 5 mm, and different numbers of signal averaging and b values were compared. FA and apparent diffusion coefficients (ADCs) of the cortex and medulla were measured. Measurement error within the same and repeated examination was examined using within-individual standard deviation (Sw).\n RESULTS: FAs of the renal cortex were lower than the medulla (mean value of a sequence ranging 0.148-0.224, 0.433-0.476) and the ADCs of the cortex were higher than the medulla (2.26-2.69x10(-3) mm2/s, 1.77-2.19x10(-3) mm2/s) in all sequences (P\u003c0.001). The renal cortex-medulla difference was the largest, with respiratory trigger- ing including a 3-mm slice thickness, three signal averages,and a b-value=0, 200, or 400 s/mm2 (P\u003c0.001). Sw tended to be smaller in the sequence with a b-value of 400 s/mm2. \nCONCLUSION: DTI of kidneys with respiratory triggering is feasible with excellent cortex-medulla differentiation.", "subitem_description_type": "Abstract"}]}, "item_8_relation_14": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "10.1002/jmri.21669", "subitem_relation_type_select": "DOI"}}]}, "item_8_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "1053-1807", "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": "Kataoka, Masako"}], "nameIdentifiers": [{"nameIdentifier": "452704", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Kido, Aki"}], "nameIdentifiers": [{"nameIdentifier": "452705", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Nakamoto, Yuji"}], "nameIdentifiers": [{"nameIdentifier": "452706", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Koyama, Takashi"}], "nameIdentifiers": [{"nameIdentifier": "452707", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Isoda, Hiroyoshi"}], "nameIdentifiers": [{"nameIdentifier": "452708", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Maetani, Youji"}], "nameIdentifiers": [{"nameIdentifier": "452709", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Umeoka, Shigeaki"}], "nameIdentifiers": [{"nameIdentifier": "452710", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Tamai, Ken"}], "nameIdentifiers": [{"nameIdentifier": "452711", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Saga, Tsuneo"}], "nameIdentifiers": [{"nameIdentifier": "452712", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Morisawa, Nobuko"}], "nameIdentifiers": [{"nameIdentifier": "452713", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Togashi, Kaori"}], "nameIdentifiers": [{"nameIdentifier": "452714", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "et.al"}], "nameIdentifiers": [{"nameIdentifier": "452715", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "佐賀 恒夫", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "452716", "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": "Diffusion Tensor Imaging of Kidneys With Respiratory Triggering: Optimization of Parameters to Demonstrate Anisotropic Structures on Fraction Anisotropy Maps", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Diffusion Tensor Imaging of Kidneys With Respiratory Triggering: Optimization of Parameters to Demonstrate Anisotropic Structures on Fraction Anisotropy Maps"}]}, "item_type_id": "8", "owner": "1", "path": ["1"], "permalink_uri": "https://repo.qst.go.jp/records/45559", "pubdate": {"attribute_name": "公開日", "attribute_value": "2009-06-29"}, "publish_date": "2009-06-29", "publish_status": "0", "recid": "45559", "relation": {}, "relation_version_is_last": true, "title": ["Diffusion Tensor Imaging of Kidneys With Respiratory Triggering: Optimization of Parameters to Demonstrate Anisotropic Structures on Fraction Anisotropy Maps"], "weko_shared_id": -1}
Diffusion Tensor Imaging of Kidneys With Respiratory Triggering: Optimization of Parameters to Demonstrate Anisotropic Structures on Fraction Anisotropy Maps
https://repo.qst.go.jp/records/45559
https://repo.qst.go.jp/records/455592b1a9345-ba36-4db2-9582-5a25b0459d1a
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2009-06-29 | |||||
タイトル | ||||||
タイトル | Diffusion Tensor Imaging of Kidneys With Respiratory Triggering: Optimization of Parameters to Demonstrate Anisotropic Structures on Fraction Anisotropy Maps | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Kataoka, Masako
× Kataoka, Masako× Kido, Aki× Nakamoto, Yuji× Koyama, Takashi× Isoda, Hiroyoshi× Maetani, Youji× Umeoka, Shigeaki× Tamai, Ken× Saga, Tsuneo× Morisawa, Nobuko× Togashi, Kaori× et.al× 佐賀 恒夫 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | PURPOSE: To demonstrate the feasibility of diffusion tensor imaging (DTI) of kidneys with respiratory triggering, and determine the optimal imaging parameters for fraction anisotropy (FA) maps. MATERIALS AND METHODS: DTI of kidneys from 16 healthy volunteers was performed using a 1.5T scanner. Five different sequences with different parameters including respiration-triggered acquisition or multiple breath-holding, slice thicknesses of 3 or 5 mm, and different numbers of signal averaging and b values were compared. FA and apparent diffusion coefficients (ADCs) of the cortex and medulla were measured. Measurement error within the same and repeated examination was examined using within-individual standard deviation (Sw). RESULTS: FAs of the renal cortex were lower than the medulla (mean value of a sequence ranging 0.148-0.224, 0.433-0.476) and the ADCs of the cortex were higher than the medulla (2.26-2.69x10(-3) mm2/s, 1.77-2.19x10(-3) mm2/s) in all sequences (P<0.001). The renal cortex-medulla difference was the largest, with respiratory trigger- ing including a 3-mm slice thickness, three signal averages,and a b-value=0, 200, or 400 s/mm2 (P<0.001). Sw tended to be smaller in the sequence with a b-value of 400 s/mm2. CONCLUSION: DTI of kidneys with respiratory triggering is feasible with excellent cortex-medulla differentiation. |
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書誌情報 |
Journal of Magnetic Resonance Imaging : JMRI 巻 29, 号 3, p. 736-744, 発行日 2009-02 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1053-1807 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1002/jmri.21669 |