{"created":"2023-05-15T14:56:57.278648+00:00","id":77292,"links":{},"metadata":{"_buckets":{"deposit":"11074e65-1f1c-4a6d-9fb7-29b934693651"},"_deposit":{"created_by":1,"id":"77292","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"77292"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00077292","sets":["10:28"]},"author_link":["797513","797512","797526","797522","797514","797517","797523","797515","797516","797518","797520","797521","797524","797525","797511","797519"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2019-11-01","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Coronary artery disease (CAD) is one of the leading causes of death world-wide. Noninvasive quantification of myocardial blood flow with PET is a key tool for detection and monitoring of CAD. However, current standard cylindrical PET scanners are not optimized for cardiac imaging because they are designed mainly for whole-body imaging. In this study, we proposed two compact geometries, the elliptical geometry and the D-shape geometry, for a cardiac-dedicated PET system. We compared their performance with a conventional cylindrical geometry by using the Geant4 simulation toolkit. Furthermore, we evaluated two detector designs with different LYSO crystal thicknesses (20-mm and 10-mm) and appropriate practical coincidence timing resolutions (CTRs) (300 ps for 20 mm LYSO and 250 ps for 10 mm LYSO) to investigate a suitable detector design. In the simulation, an elliptical water phantom (10 MBq) was scanned for 10 s. We evaluated the sensitivity, the noise-equivalent count rate (NECR), and image noise (coefficient of variation: CV) of the water phantom. The D-shape geometry with the 20 mm long LYSO showed the highest sensitivity and NECR. This geometry achieved 71% higher sensitivity and 44% higher NECR compared with the conventional cylindrical geometry. The image noise (CV) was decreased by 24%. The number of detectors was reduced to 3/8 (37.5%). On the other hand, the system with the half-thickness crystal did not show any improvement in the image noise compared with the whole-body cylindrical geometry. With the 20 mm long LYSO, our proposed D-shape geometry is a promising design for a high-sensitivity cardiac-dedicated PET system.","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":"2019 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)","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":"Akamatsu, Go"}],"nameIdentifiers":[{"nameIdentifier":"797511","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tashima, Hideaki"}],"nameIdentifiers":[{"nameIdentifier":"797512","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Iwao, Yuma"}],"nameIdentifiers":[{"nameIdentifier":"797513","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Takyu, Sodai"}],"nameIdentifiers":[{"nameIdentifier":"797514","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kang, Hangyu"}],"nameIdentifiers":[{"nameIdentifier":"797515","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Takahashi, Miwako"}],"nameIdentifiers":[{"nameIdentifier":"797516","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yoshida, Eiji"}],"nameIdentifiers":[{"nameIdentifier":"797517","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yamaya, Taiga"}],"nameIdentifiers":[{"nameIdentifier":"797518","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Akamatsu, Go","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"797519","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tashima, Hideaki","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"797520","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Iwao, Yuma","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"797521","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Takyu, Sodai","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"797522","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kang, Hangyu","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"797523","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Takahashi, Miwako","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"797524","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yoshida, Eiji","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"797525","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yamaya, Taiga","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"797526","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":"Design study of cardiac-dedicated TOF-PET systems with compact detector arrangement","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Design study of cardiac-dedicated TOF-PET systems with compact detector arrangement"}]},"item_type_id":"10005","owner":"1","path":["28"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-10-02"},"publish_date":"2019-10-02","publish_status":"0","recid":"77292","relation_version_is_last":true,"title":["Design study of cardiac-dedicated TOF-PET systems with compact detector arrangement"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T23:53:11.996690+00:00"}