{"_buckets": {"deposit": "9dfb8bbe-1d54-4544-9d5a-a6bd1e73bc1a"}, "_deposit": {"id": "7537", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "7537"}, "status": "published"}, "_oai": {"id": "oai:kitami-it.repo.nii.ac.jp:00007537", "sets": ["1"]}, "item_3_biblio_info_186": {"attribute_name": "\u66f8\u8a8c\u60c5\u5831", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2013-02", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "2", "bibliographicPageEnd": "73", "bibliographicPageStart": "63", "bibliographicVolumeNumber": "115", "bibliographic_titles": [{"bibliographic_title": "Oral surgery, oral medicine, oral pathology, oral radiology"}]}]}, "item_3_description_184": {"attribute_name": "\u6284\u9332", "attribute_value_mlt": [{"subitem_description": "Objective: To reduce metal-induced streak artifact on oral and maxillofacial X-ray CT (computed tomography) images by developing the fast statistical image reconstruction system using iterative reconstruction algorithms.\nStudy design: Adjacent CT images often depict similar anatomical structures in thin slices. So firstly images were reconstructed using the same projection data of an artifact-free image. Secondly images were processed by the successive iterative restoration method where projection data was generated from reconstructed image in sequence. Besides the maximum likelihood-expectation maximization algorithm, the ordered subset-expectation maximization algorithm (OS-EM) was examined. Also small ROI setting and reverse processing were applied for improving performance.\nResults: Both algorithms reduced artifacts instead of slightly decreasing gray levels. The OS-EM and small ROI reduced the processing duration without apparent detriments. Sequential and reverse processing didn\u2019t show apparent effects.\nConclusions: Two alternatives in iterative reconstruction methods were effective for artifacts reduction. The OS-EM algorithm and small ROI setting improved the performance.", "subitem_description_type": "Abstract"}]}, "item_3_publisher_212": {"attribute_name": "\u51fa\u7248\u8005", "attribute_value_mlt": [{"subitem_publisher": "Elsevier"}]}, "item_3_relation_191": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "http://dx.doi.org/10.1016/j.oooo.2012.07.436", "subitem_relation_type_select": "DOI"}}]}, "item_3_select_195": {"attribute_name": "\u8457\u8005\u7248\u30d5\u30e9\u30b0", "attribute_value_mlt": [{"subitem_select_item": "author"}]}, "item_3_subject_196": {"attribute_name": "\u65e5\u672c\u5341\u9032\u5206\u985e\u6cd5", "attribute_value_mlt": [{"subitem_subject": "490", "subitem_subject_scheme": "NDC"}]}, "item_creator": {"attribute_name": "\u8457\u8005", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Dong, Jian"}], "nameIdentifiers": [{"nameIdentifier": "38569", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Hayakawa, Yoshihiko"}], "nameIdentifiers": [{"nameIdentifier": "38570", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Kannenberg, Sven"}], "nameIdentifiers": [{"nameIdentifier": "38571", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Kober, Comelia"}], "nameIdentifiers": [{"nameIdentifier": "38572", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "\u30d5\u30a1\u30a4\u30eb\u60c5\u5831", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2016-11-22"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "Dong_Hayakawa_etal_OOOOjournal_Feb2013-1.pdf", "filesize": [{"value": "2.2 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 2200000.0, "url": {"label": "Dong_Hayakawa_etal_OOOOjournal_Feb2013-1.pdf", "url": "https://kitami-it.repo.nii.ac.jp/record/7537/files/Dong_Hayakawa_etal_OOOOjournal_Feb2013-1.pdf"}, "version_id": "1e7a7350-fd54-47ed-b4c7-1781b84d1c26"}]}, "item_language": {"attribute_name": "\u8a00\u8a9e", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_resource_type": {"attribute_name": "\u8cc7\u6e90\u30bf\u30a4\u30d7", "attribute_value_mlt": [{"resourcetype": "journal article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "Metal-induced streak artifact reduction using iterative reconstruction algorithms in X-ray CT image of the dento-alveolar region", "item_titles": {"attribute_name": "\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_title": "Metal-induced streak artifact reduction using iterative reconstruction algorithms in X-ray CT image of the dento-alveolar region"}]}, "item_type_id": "3", "owner": "1", "path": ["1"], "permalink_uri": "https://kitami-it.repo.nii.ac.jp/records/7537", "pubdate": {"attribute_name": "\u516c\u958b\u65e5", "attribute_value": "2013-02-27"}, "publish_date": "2013-02-27", "publish_status": "0", "recid": "7537", "relation": {}, "relation_version_is_last": true, "title": ["Metal-induced streak artifact reduction using iterative reconstruction algorithms in X-ray CT image of the dento-alveolar region"], "weko_shared_id": null}