WEKO3
アイテム
{"_buckets": {"deposit": "0d32073a-ab0c-4b66-b3f7-ecc2cd9c12f4"}, "_deposit": {"created_by": 1, "id": "75608", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "75608"}, "status": "published"}, "_oai": {"id": "oai:repo.qst.go.jp:00075608", "sets": ["29"]}, "author_link": ["743557", "743562", "743556", "743558", "743564", "743552", "743555", "743563", "743560", "743554", "743553", "743559", "743551", "743561"], "item_10005_date_7": {"attribute_name": "発表年月日", "attribute_value_mlt": [{"subitem_date_issued_datetime": "2019-04-11", "subitem_date_issued_type": "Issued"}]}, "item_10005_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "【Purpose】Brain PET imaging plays important roles in neurology, neuro-oncology and molecular imaging research. There is a potential demand for a brain PET scanner with high spatial resolution and high sensitivity to achieve more accurate brain imaging. Therefore, we are developing a brain-dedicated helmet-type PET scanner with 4-layer depth-of-interaction (DOI) detectors. In this study, we evaluated performance characteristics of the helmet-type PET prototype. \n\n【Method】The helmet-type PET prototype was composed of 54 detector blocks. The 47 detector blocks were arranged with a hemispherical helmet detector unit and the other 7 detector blocks were located at the neck position. The detector block itself was composed of 4-layer GSOZ crystals. We measured performance characteristics (spatial resolution, sensitivity, scatter fraction, count rate characteristics, accuracy of corrections for count losses and randoms, and image quality) of the helmet-type PET prototype based on the NEMA NU2-2018 standard. In addition to the original NEMA standard, some modified measurements were performed to predict performance of brain imaging. \n\n【Result】The helmet-type PET prototype showed great spatial resolution (1.6 mm at 1 cm offset, OSEM reconstruction), great sensitivity (32.7 kcps/MBq obtained by the modified setup) and promising image quality. With the original 70-cm-long scatter phantom, the scatter fraction, peak noise-equivalent count rate and maximum absolute bias were 37%, 34.9 kcps@4.0kBq/mL and 17.4%.\n\n【Conclusion】We confirmed the high performance of the helmet-type PET prototype. The helmet-type PET scanner has the high potential to achieve more accurate brain PET imaging, even with a small number of detectors.", "subitem_description_type": "Abstract"}]}, "item_10005_description_6": {"attribute_name": "会議概要(会議名, 開催地, 会期, 主催者等)", "attribute_value_mlt": [{"subitem_description": "第75回日本放射線技術学会総会学術大会", "subitem_description_type": "Other"}]}, "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": "赤松, 剛"}], "nameIdentifiers": [{"nameIdentifier": "743551", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "田島, 英朗"}], "nameIdentifiers": [{"nameIdentifier": "743552", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "吉田, 英治"}], "nameIdentifiers": [{"nameIdentifier": "743553", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "岩男, 悠真"}], "nameIdentifiers": [{"nameIdentifier": "743554", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "脇坂, 秀克"}], "nameIdentifiers": [{"nameIdentifier": "743555", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "前田, 貴雅"}], "nameIdentifiers": [{"nameIdentifier": "743556", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "山谷, 泰賀"}], "nameIdentifiers": [{"nameIdentifier": "743557", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Akamatsu, Go", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "743558", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Tashima, Hideaki", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "743559", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Yoshida, Eiji", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "743560", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Iwao, Yuma", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "743561", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Wakizaka, Hidekatsu", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "743562", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Maeda, Takamasa", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "743563", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Yamaya, Taiga", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "743564", "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": "conference object", "resourceuri": "http://purl.org/coar/resource_type/c_c94f"}]}, "item_title": "NEMA NU2 performance evaluation of a helmet-type PET prototype with four-layer DOI detectors", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "NEMA NU2 performance evaluation of a helmet-type PET prototype with four-layer DOI detectors"}]}, "item_type_id": "10005", "owner": "1", "path": ["29"], "permalink_uri": "https://repo.qst.go.jp/records/75608", "pubdate": {"attribute_name": "公開日", "attribute_value": "2019-04-15"}, "publish_date": "2019-04-15", "publish_status": "0", "recid": "75608", "relation": {}, "relation_version_is_last": true, "title": ["NEMA NU2 performance evaluation of a helmet-type PET prototype with four-layer DOI detectors"], "weko_shared_id": -1}
NEMA NU2 performance evaluation of a helmet-type PET prototype with four-layer DOI detectors
https://repo.qst.go.jp/records/75608
https://repo.qst.go.jp/records/756085ded5086-8280-4698-a247-828a0947972d
Item type | 会議発表用資料 / Presentation(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2019-04-15 | |||||
タイトル | ||||||
タイトル | NEMA NU2 performance evaluation of a helmet-type PET prototype with four-layer DOI detectors | |||||
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_c94f | |||||
資源タイプ | conference object | |||||
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 |
赤松, 剛
× 赤松, 剛× 田島, 英朗× 吉田, 英治× 岩男, 悠真× 脇坂, 秀克× 前田, 貴雅× 山谷, 泰賀× Akamatsu, Go× Tashima, Hideaki× Yoshida, Eiji× Iwao, Yuma× Wakizaka, Hidekatsu× Maeda, Takamasa× Yamaya, Taiga |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 【Purpose】Brain PET imaging plays important roles in neurology, neuro-oncology and molecular imaging research. There is a potential demand for a brain PET scanner with high spatial resolution and high sensitivity to achieve more accurate brain imaging. Therefore, we are developing a brain-dedicated helmet-type PET scanner with 4-layer depth-of-interaction (DOI) detectors. In this study, we evaluated performance characteristics of the helmet-type PET prototype. 【Method】The helmet-type PET prototype was composed of 54 detector blocks. The 47 detector blocks were arranged with a hemispherical helmet detector unit and the other 7 detector blocks were located at the neck position. The detector block itself was composed of 4-layer GSOZ crystals. We measured performance characteristics (spatial resolution, sensitivity, scatter fraction, count rate characteristics, accuracy of corrections for count losses and randoms, and image quality) of the helmet-type PET prototype based on the NEMA NU2-2018 standard. In addition to the original NEMA standard, some modified measurements were performed to predict performance of brain imaging. 【Result】The helmet-type PET prototype showed great spatial resolution (1.6 mm at 1 cm offset, OSEM reconstruction), great sensitivity (32.7 kcps/MBq obtained by the modified setup) and promising image quality. With the original 70-cm-long scatter phantom, the scatter fraction, peak noise-equivalent count rate and maximum absolute bias were 37%, 34.9 kcps@4.0kBq/mL and 17.4%. 【Conclusion】We confirmed the high performance of the helmet-type PET prototype. The helmet-type PET scanner has the high potential to achieve more accurate brain PET imaging, even with a small number of detectors. |
|||||
会議概要(会議名, 開催地, 会期, 主催者等) | ||||||
内容記述タイプ | Other | |||||
内容記述 | 第75回日本放射線技術学会総会学術大会 | |||||
発表年月日 | ||||||
日付 | 2019-04-11 | |||||
日付タイプ | Issued |