{"created":"2021-03-01T05:59:59.791638+00:00","id":7543,"links":{},"metadata":{"_buckets":{"deposit":"fe8db8f6-e6a5-48b2-a898-3d9293368ba6"},"_deposit":{"id":"7543","owners":[],"pid":{"revision_id":0,"type":"depid","value":"7543"},"status":"published"},"_oai":{"id":"oai:kitami-it.repo.nii.ac.jp:00007543","sets":["10"]},"author_link":["38586","38587","38588","38589","38590"],"control_number":"7543","item_5_alternative_title_18":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"IMAGING AND TREATING TEMPOROMANDIBULAR JOINT CONDITIONS","subitem_alternative_title_language":"en"}]},"item_5_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2008-06","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1 Suppl.","bibliographicPageEnd":"S213","bibliographicPageStart":"S212","bibliographicVolumeNumber":"3","bibliographic_titles":[{"bibliographic_title":"International Journal of Computer Assisted Radiology and Surgery"}]}]},"item_5_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"To improve the accuracy of bone segmentation procedures in dental CBCT images, several two- and three-dimensional (2D & 3D) filtering methods were examined. The comparison with the processing for MDCT images was also done. CBCT images having high and isotropic spatial resolution, but the noise is comparatively high. By reducing the noise in images, the attempt to improve the MPR image quality was carried out. And the 3D region growing method was examined for the volumetric data of CBCT images for the bone segmentation. CBCT and MDCT examinations were taken using CB Throne (Hitachi Medical Systems, Japan) and Somatom Plus 4 (Siemens, Germany), respectively. Principal exposure parameters were as follows; I-mode, 10 cm FOV in diameter, 120 kV, 15 mA, 0.2 mm in slice thickness and 10 s exposure time (CBCT) and 120kV, 130 effective mAs, 0.5 mm slice thickness (MDCT).\nTwo-D and 3D filtering procedures for Gaussian  moothing, Laplacian sharpening, etc. were applied for the improvement of MPR images of both CT modalities. Images processed were a clinical case of Mucocele in the maxillary sinus. The 2D and 3D filtering procedures for Gaussian smoothing, Laplacian sharpening worked for the improvement in the different way. In comparison with MDCT images, the difference was not large. The effect of the simple noise reduction filter is seemed to be no changes in bone segmentation in spite of extreme reduced noise. Due to the example which the Sobel filtering, noise-resistant edge-detection filter, was applied as either 2D or 3D local operator, the difference was appeared less significantly in CBCT images than MDCT images. For the imaging of dento-alveolar and maxillary sinus regions, the depiction of thin bone structure with the high accuracy is important. Three-D filtering methods have the possibility to improve the accuracy of bone segmentation in threedimensional displaying of CBCT images. Based on these finding 3D region growing method was examined for 3D visualization. The bone region on CBCT images was extracted using the 3D region growing method.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_5_description_5":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"Proceedings of the 22nd International Congress and Exhibition, Barcelona, Spain, June 25-28, 2008","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_5_publisher_32":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Springer"}]},"item_5_relation_11":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://doi.org/10.1007/s11548-008-0196-7","subitem_relation_type_select":"DOI"}}]},"item_5_select_15":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"author"}]},"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":"Hayakawa, Y.","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"38586","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sagawa, M.","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"38587","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kawaguchi, T.","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"38588","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Miyoseta, Y.","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"38589","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yamashita, H.","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"38590","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2016-11-22"}],"displaytype":"detail","filename":"Hayakawa_S212-S213_final_CARS2008.pdf","filesize":[{"value":"137.3 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"Hayakawa_S212-S213_final_CARS2008.pdf","objectType":"fulltext","url":"https://kitami-it.repo.nii.ac.jp/record/7543/files/Hayakawa_S212-S213_final_CARS2008.pdf"},"version_id":"78c60fef-ad13-4a6f-a7d7-80415f4a452e"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Bone segmentation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Cone beam CT","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"3D filter","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Region growing","subitem_subject_language":"en","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":"conference paper","resourceuri":"http://purl.org/coar/resource_type/c_5794"}]},"item_title":"Improvement of the accuracy of bone segmentation procedures applied to CBCT images","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Improvement of the accuracy of bone segmentation procedures applied to CBCT images","subitem_title_language":"en"}]},"item_type_id":"5","owner":"1","path":["10"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2013-03-18"},"publish_date":"2013-03-18","publish_status":"0","recid":"7543","relation_version_is_last":true,"title":["Improvement of the accuracy of bone segmentation procedures applied to CBCT images"],"weko_creator_id":"1","weko_shared_id":3},"updated":"2022-12-13T02:20:59.534086+00:00"}