{"id":"https://openalex.org/W4364321570","doi":"https://doi.org/10.1109/tim.2023.3265750","title":"A Spherical Coil Array for the Calibration of Whole-Head Magnetoencephalograph Systems","display_name":"A Spherical Coil Array for the Calibration of Whole-Head Magnetoencephalograph Systems","publication_year":2023,"publication_date":"2023-01-01","ids":{"openalex":"https://openalex.org/W4364321570","doi":"https://doi.org/10.1109/tim.2023.3265750"},"language":"en","primary_location":{"id":"doi:10.1109/tim.2023.3265750","is_oa":true,"landing_page_url":"https://doi.org/10.1109/tim.2023.3265750","pdf_url":"https://ieeexplore.ieee.org/ielx7/19/4407674/10098146.pdf","source":{"id":"https://openalex.org/S10892749","display_name":"IEEE Transactions on Instrumentation and Measurement","issn_l":"0018-9456","issn":["0018-9456","1557-9662"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Instrumentation and Measurement","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://ieeexplore.ieee.org/ielx7/19/4407674/10098146.pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5082195497","display_name":"Yoshiaki Adachi","orcid":"https://orcid.org/0000-0002-9041-6987"},"institutions":[{"id":"https://openalex.org/I125852741","display_name":"Kanazawa Institute of Technology","ror":"https://ror.org/02ws33e43","country_code":"JP","type":"education","lineage":["https://openalex.org/I125852741"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yoshiaki Adachi","raw_affiliation_strings":["Applied Electronics Laboratory, Kanazawa Institute of Technology, Nonoichi, Ishikawa, Japan"],"raw_orcid":"https://orcid.org/0000-0002-9041-6987","affiliations":[{"raw_affiliation_string":"Applied Electronics Laboratory, Kanazawa Institute of Technology, Nonoichi, Ishikawa, Japan","institution_ids":["https://openalex.org/I125852741"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5084028678","display_name":"Daisuke Oyama","orcid":"https://orcid.org/0000-0002-2664-2402"},"institutions":[{"id":"https://openalex.org/I125852741","display_name":"Kanazawa Institute of Technology","ror":"https://ror.org/02ws33e43","country_code":"JP","type":"education","lineage":["https://openalex.org/I125852741"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Daisuke Oyama","raw_affiliation_strings":["Applied Electronics Laboratory, Kanazawa Institute of Technology, Nonoichi, Ishikawa, Japan"],"raw_orcid":"https://orcid.org/0000-0002-2664-2402","affiliations":[{"raw_affiliation_string":"Applied Electronics Laboratory, Kanazawa Institute of Technology, Nonoichi, Ishikawa, Japan","institution_ids":["https://openalex.org/I125852741"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103133642","display_name":"Masanori Higuchi","orcid":"https://orcid.org/0000-0002-3737-356X"},"institutions":[{"id":"https://openalex.org/I125852741","display_name":"Kanazawa Institute of Technology","ror":"https://ror.org/02ws33e43","country_code":"JP","type":"education","lineage":["https://openalex.org/I125852741"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Masanori Higuchi","raw_affiliation_strings":["Applied Electronics Laboratory, Kanazawa Institute of Technology, Nonoichi, Ishikawa, Japan"],"raw_orcid":"https://orcid.org/0000-0002-3737-356X","affiliations":[{"raw_affiliation_string":"Applied Electronics Laboratory, Kanazawa Institute of Technology, Nonoichi, Ishikawa, Japan","institution_ids":["https://openalex.org/I125852741"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5052038870","display_name":"Gen Uehara","orcid":"https://orcid.org/0000-0002-2090-6569"},"institutions":[{"id":"https://openalex.org/I125852741","display_name":"Kanazawa Institute of Technology","ror":"https://ror.org/02ws33e43","country_code":"JP","type":"education","lineage":["https://openalex.org/I125852741"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Gen Uehara","raw_affiliation_strings":["Applied Electronics Laboratory, Kanazawa Institute of Technology, Nonoichi, Ishikawa, Japan"],"raw_orcid":"https://orcid.org/0000-0002-2090-6569","affiliations":[{"raw_affiliation_string":"Applied Electronics Laboratory, Kanazawa Institute of Technology, Nonoichi, Ishikawa, Japan","institution_ids":["https://openalex.org/I125852741"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I125852741"],"apc_list":null,"apc_paid":null,"fwci":2.464,"has_fulltext":true,"cited_by_count":14,"citation_normalized_percentile":{"value":0.8910314,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":96,"max":99},"biblio":{"volume":"72","issue":null,"first_page":"1","last_page":"10"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11993","display_name":"Atomic and Subatomic Physics Research","score":1.0,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11993","display_name":"Atomic and Subatomic Physics Research","score":1.0,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10378","display_name":"Advanced MRI Techniques and Applications","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10241","display_name":"Functional Brain Connectivity Studies","score":0.9975000023841858,"subfield":{"id":"https://openalex.org/subfields/2805","display_name":"Cognitive Neuroscience"},"field":{"id":"https://openalex.org/fields/28","display_name":"Neuroscience"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/electromagnetic-coil","display_name":"Electromagnetic coil","score":0.88157719373703},{"id":"https://openalex.org/keywords/calibration","display_name":"Calibration","score":0.872791588306427},{"id":"https://openalex.org/keywords/imaging-phantom","display_name":"Imaging phantom","score":0.6369324326515198},{"id":"https://openalex.org/keywords/bobbin","display_name":"Bobbin","score":0.6368170976638794},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.5840334892272949},{"id":"https://openalex.org/keywords/head","display_name":"Head (geology)","score":0.5206853151321411},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.5109876394271851},{"id":"https://openalex.org/keywords/concentric","display_name":"Concentric","score":0.49210113286972046},{"id":"https://openalex.org/keywords/calibration-curve","display_name":"Calibration curve","score":0.47067150473594666},{"id":"https://openalex.org/keywords/magnetometer","display_name":"Magnetometer","score":0.45097464323043823},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.4402727782726288},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.2769091725349426},{"id":"https://openalex.org/keywords/magnetic-field","display_name":"Magnetic field","score":0.16470569372177124},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.15084165334701538},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.13243752717971802},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.11489561200141907},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.1021675169467926}],"concepts":[{"id":"https://openalex.org/C30403606","wikidata":"https://www.wikidata.org/wiki/Q2981904","display_name":"Electromagnetic coil","level":2,"score":0.88157719373703},{"id":"https://openalex.org/C165838908","wikidata":"https://www.wikidata.org/wiki/Q736777","display_name":"Calibration","level":2,"score":0.872791588306427},{"id":"https://openalex.org/C104293457","wikidata":"https://www.wikidata.org/wiki/Q28324852","display_name":"Imaging phantom","level":2,"score":0.6369324326515198},{"id":"https://openalex.org/C199540501","wikidata":"https://www.wikidata.org/wiki/Q1520790","display_name":"Bobbin","level":2,"score":0.6368170976638794},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.5840334892272949},{"id":"https://openalex.org/C2780312720","wikidata":"https://www.wikidata.org/wiki/Q5689100","display_name":"Head (geology)","level":2,"score":0.5206853151321411},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.5109876394271851},{"id":"https://openalex.org/C90296322","wikidata":"https://www.wikidata.org/wiki/Q619776","display_name":"Concentric","level":2,"score":0.49210113286972046},{"id":"https://openalex.org/C23531484","wikidata":"https://www.wikidata.org/wiki/Q3196863","display_name":"Calibration curve","level":3,"score":0.47067150473594666},{"id":"https://openalex.org/C153946474","wikidata":"https://www.wikidata.org/wiki/Q333921","display_name":"Magnetometer","level":3,"score":0.45097464323043823},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.4402727782726288},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.2769091725349426},{"id":"https://openalex.org/C115260700","wikidata":"https://www.wikidata.org/wiki/Q11408","display_name":"Magnetic field","level":2,"score":0.16470569372177124},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.15084165334701538},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.13243752717971802},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.11489561200141907},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.1021675169467926},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C114793014","wikidata":"https://www.wikidata.org/wiki/Q52109","display_name":"Geomorphology","level":1,"score":0.0},{"id":"https://openalex.org/C119128265","wikidata":"https://www.wikidata.org/wiki/Q900165","display_name":"Detection limit","level":2,"score":0.0},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.0},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tim.2023.3265750","is_oa":true,"landing_page_url":"https://doi.org/10.1109/tim.2023.3265750","pdf_url":"https://ieeexplore.ieee.org/ielx7/19/4407674/10098146.pdf","source":{"id":"https://openalex.org/S10892749","display_name":"IEEE Transactions on Instrumentation and Measurement","issn_l":"0018-9456","issn":["0018-9456","1557-9662"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Instrumentation and Measurement","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1109/tim.2023.3265750","is_oa":true,"landing_page_url":"https://doi.org/10.1109/tim.2023.3265750","pdf_url":"https://ieeexplore.ieee.org/ielx7/19/4407674/10098146.pdf","source":{"id":"https://openalex.org/S10892749","display_name":"IEEE Transactions on Instrumentation and Measurement","issn_l":"0018-9456","issn":["0018-9456","1557-9662"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Instrumentation and Measurement","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy","score":0.6499999761581421}],"awards":[{"id":"https://openalex.org/G2956665412","display_name":"Development of basic technologies for wearable biomagnetic measurement","funder_award_id":"18K12044","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"}],"funders":[{"id":"https://openalex.org/F4320334764","display_name":"Japan Society for the Promotion of Science","ror":"https://ror.org/00hhkn466"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4364321570.pdf","grobid_xml":"https://content.openalex.org/works/W4364321570.grobid-xml"},"referenced_works_count":24,"referenced_works":["https://openalex.org/W139620184","https://openalex.org/W275168305","https://openalex.org/W1879134697","https://openalex.org/W1987333243","https://openalex.org/W2001222611","https://openalex.org/W2010979555","https://openalex.org/W2050331863","https://openalex.org/W2084333685","https://openalex.org/W2098137359","https://openalex.org/W2104494613","https://openalex.org/W2152710595","https://openalex.org/W2325256587","https://openalex.org/W2400408883","https://openalex.org/W2526513403","https://openalex.org/W2643001131","https://openalex.org/W2791548393","https://openalex.org/W2945600496","https://openalex.org/W3030601496","https://openalex.org/W3098776523","https://openalex.org/W3162280321","https://openalex.org/W4212982757","https://openalex.org/W4225374364","https://openalex.org/W4238002462","https://openalex.org/W4300410985"],"related_works":["https://openalex.org/W2366847884","https://openalex.org/W2319044678","https://openalex.org/W2066112174","https://openalex.org/W2316924528","https://openalex.org/W4307855948","https://openalex.org/W2122928664","https://openalex.org/W2375775945","https://openalex.org/W2036916433","https://openalex.org/W2021161036","https://openalex.org/W2062681150"],"abstract_inverted_index":{"We":[0],"proposed":[1,85],"a":[2,33,86,111,125,143],"spherical":[3,112],"coil":[4,22,46,78,114,146],"array":[5,23,147],"for":[6,16],"determining":[7],"the":[8,14,58,65,77,90,99,117,120,136],"positions,":[9],"orientations,":[10],"and":[11,27,71,94,129],"sensitivities":[12],"of":[13,35,43,57,102,119,142,149,152],"magnetometers":[15],"whole-head":[17],"magnetoencephalograph":[18],"(MEG)":[19],"systems.":[20],"The":[21,55],"comprises":[24],"16":[25],"concentric":[26],"symmetrically":[28],"oriented":[29],"circular":[30],"coils":[31],"with":[32,108],"diameter":[34,79],"150":[36],"mm,":[37],"which":[38],"is":[39],"larger":[40],"than":[41],"those":[42],"conventional":[44,144],"calibration":[45,59,113,121,145],"arrays,":[47],"such":[48],"as":[49,130],"5":[50],"mm":[51],"or":[52],"60":[53],"mm.":[54],"accuracy":[56,118,137],"was":[60,80,96,122,133,138],"expected":[61],"to":[62,88],"improve":[63],"because":[64],"relative":[66],"mechanical":[67],"errors":[68],"in":[69,92],"machining":[70],"assembly":[72,151],"could":[73],"be":[74],"reduced":[75],"when":[76],"increased.":[81],"Moreover,":[82],"we":[83],"also":[84],"method":[87],"estimate":[89],"uncertainties":[91,109],"calibration,":[93],"it":[95,132],"demonstrated":[97],"that":[98,135,141],"sensor":[100,104],"parameters":[101],"each":[103],"were":[105],"successfully":[106],"obtained":[107],"using":[110,124],"array.":[115],"Additionally,":[116],"evaluated":[123],"dry-type":[126],"MEG":[127],"phantom,":[128],"expected,":[131],"found":[134],"improved":[139],"from":[140],"composed":[148],"an":[150],"multiple":[153],"3-axis":[154],"bobbins.":[155]},"counts_by_year":[{"year":2025,"cited_by_count":7},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":3}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}
