{"id":"https://openalex.org/W1966104212","doi":"https://doi.org/10.1002/scj.4690220507","title":"High\u2010precision t<sub>1</sub> imaging method for magnetic resonance imaging","display_name":"High\u2010precision t<sub>1</sub> imaging method for magnetic resonance imaging","publication_year":1991,"publication_date":"1991-01-01","ids":{"openalex":"https://openalex.org/W1966104212","doi":"https://doi.org/10.1002/scj.4690220507","mag":"1966104212"},"language":"en","primary_location":{"id":"doi:10.1002/scj.4690220507","is_oa":false,"landing_page_url":"https://doi.org/10.1002/scj.4690220507","pdf_url":null,"source":{"id":"https://openalex.org/S58208175","display_name":"Systems and Computers in Japan","issn_l":"0882-1666","issn":["0882-1666","1520-684X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Systems and Computers in Japan","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5060237239","display_name":"Shinichi Satou","orcid":null},"institutions":[{"id":"https://openalex.org/I65143321","display_name":"Hitachi (Japan)","ror":"https://ror.org/02exqgm79","country_code":"JP","type":"company","lineage":["https://openalex.org/I65143321"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Shinichi Satou","raw_affiliation_strings":["Systems Development Laboratory, Hitachi, Ltd., Kawasaki, Japan 215","Systems Development Laboratory, Hitachi Ltd., Kawasaki, Japan 215"],"affiliations":[{"raw_affiliation_string":"Systems Development Laboratory, Hitachi, Ltd., Kawasaki, Japan 215","institution_ids":["https://openalex.org/I65143321"]},{"raw_affiliation_string":"Systems Development Laboratory, Hitachi Ltd., Kawasaki, Japan 215","institution_ids":["https://openalex.org/I65143321"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5069215806","display_name":"Koichi Sano","orcid":"https://orcid.org/0000-0002-5328-1550"},"institutions":[{"id":"https://openalex.org/I65143321","display_name":"Hitachi (Japan)","ror":"https://ror.org/02exqgm79","country_code":"JP","type":"company","lineage":["https://openalex.org/I65143321"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Koichi Sano","raw_affiliation_strings":["Systems Development Laboratory, Hitachi, Ltd., Kawasaki, Japan 215","Systems Development Laboratory, Hitachi Ltd., Kawasaki, Japan 215"],"affiliations":[{"raw_affiliation_string":"Systems Development Laboratory, Hitachi, Ltd., Kawasaki, Japan 215","institution_ids":["https://openalex.org/I65143321"]},{"raw_affiliation_string":"Systems Development Laboratory, Hitachi Ltd., Kawasaki, Japan 215","institution_ids":["https://openalex.org/I65143321"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100829727","display_name":"Tetsuo Yokoyama","orcid":null},"institutions":[{"id":"https://openalex.org/I65143321","display_name":"Hitachi (Japan)","ror":"https://ror.org/02exqgm79","country_code":"JP","type":"company","lineage":["https://openalex.org/I65143321"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Tetsuo Yokoyama","raw_affiliation_strings":["Systems Development Laboratory, Hitachi, Ltd., Kawasaki, Japan 215","Systems Development Laboratory, Hitachi Ltd., Kawasaki, Japan 215"],"affiliations":[{"raw_affiliation_string":"Systems Development Laboratory, Hitachi, Ltd., Kawasaki, Japan 215","institution_ids":["https://openalex.org/I65143321"]},{"raw_affiliation_string":"Systems Development Laboratory, Hitachi Ltd., Kawasaki, Japan 215","institution_ids":["https://openalex.org/I65143321"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5109181200","display_name":"Hideaki Koizumi","orcid":null},"institutions":[{"id":"https://openalex.org/I65143321","display_name":"Hitachi (Japan)","ror":"https://ror.org/02exqgm79","country_code":"JP","type":"company","lineage":["https://openalex.org/I65143321"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hideaki Koizumi","raw_affiliation_strings":["Naka Works, Hitachi, Ltd., Katsuta, Japan 312"],"affiliations":[{"raw_affiliation_string":"Naka Works, Hitachi, Ltd., Katsuta, Japan 312","institution_ids":["https://openalex.org/I65143321"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5060237239"],"corresponding_institution_ids":["https://openalex.org/I65143321"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.04440715,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"22","issue":"5","first_page":"60","last_page":"69"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10378","display_name":"Advanced MRI Techniques and Applications","score":0.9977999925613403,"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"}},"topics":[{"id":"https://openalex.org/T10378","display_name":"Advanced MRI Techniques and Applications","score":0.9977999925613403,"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/T10522","display_name":"Medical Imaging Techniques and Applications","score":0.9962000250816345,"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/T12422","display_name":"Radiomics and Machine Learning in Medical Imaging","score":0.9736999869346619,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/imaging-phantom","display_name":"Imaging phantom","score":0.6831905841827393},{"id":"https://openalex.org/keywords/magnetic-resonance-imaging","display_name":"Magnetic resonance imaging","score":0.58433997631073},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.48132288455963135},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.4322066307067871},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4244275987148285},{"id":"https://openalex.org/keywords/inversion","display_name":"Inversion (geology)","score":0.4123002290725708},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3828027844429016},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.34742382168769836},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.34559494256973267},{"id":"https://openalex.org/keywords/nuclear-magnetic-resonance","display_name":"Nuclear magnetic resonance","score":0.3418201804161072},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.326753169298172},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.3217610716819763}],"concepts":[{"id":"https://openalex.org/C104293457","wikidata":"https://www.wikidata.org/wiki/Q28324852","display_name":"Imaging phantom","level":2,"score":0.6831905841827393},{"id":"https://openalex.org/C143409427","wikidata":"https://www.wikidata.org/wiki/Q161238","display_name":"Magnetic resonance imaging","level":2,"score":0.58433997631073},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.48132288455963135},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.4322066307067871},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4244275987148285},{"id":"https://openalex.org/C1893757","wikidata":"https://www.wikidata.org/wiki/Q3653001","display_name":"Inversion (geology)","level":3,"score":0.4123002290725708},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3828027844429016},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.34742382168769836},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.34559494256973267},{"id":"https://openalex.org/C46141821","wikidata":"https://www.wikidata.org/wiki/Q209402","display_name":"Nuclear magnetic resonance","level":1,"score":0.3418201804161072},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.326753169298172},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.3217610716819763},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C126838900","wikidata":"https://www.wikidata.org/wiki/Q77604","display_name":"Radiology","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"id":"https://openalex.org/C109007969","wikidata":"https://www.wikidata.org/wiki/Q749565","display_name":"Structural basin","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1002/scj.4690220507","is_oa":false,"landing_page_url":"https://doi.org/10.1002/scj.4690220507","pdf_url":null,"source":{"id":"https://openalex.org/S58208175","display_name":"Systems and Computers in Japan","issn_l":"0882-1666","issn":["0882-1666","1520-684X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Systems and Computers in Japan","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.550000011920929,"id":"https://metadata.un.org/sdg/3","display_name":"Good health and well-being"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":1,"referenced_works":["https://openalex.org/W2417550478"],"related_works":["https://openalex.org/W2417440389","https://openalex.org/W4385556839","https://openalex.org/W4378746257","https://openalex.org/W2734382758","https://openalex.org/W2109481748","https://openalex.org/W2381719890","https://openalex.org/W2948918209","https://openalex.org/W2040853802","https://openalex.org/W4206096448","https://openalex.org/W275168305"],"abstract_inverted_index":{"Abstract":[0],"It":[1,157],"is":[2,40,93,125,228,249],"expected":[3],"in":[4,24,30,37,167,243],"magnetic":[5],"resonance":[6],"imaging":[7],"(MRI)":[8],"that":[9,95,151,164],"the":[10,13,25,31,41,44,48,53,62,78,82,109,131,142,147,165,168,174,184,188,191,198,212,215,236,240],"measurement":[11],"of":[12,27,43,57],"longitudinal":[14],"relaxation":[15],"time":[16,65],"(":[17],"T":[18,99,132,169,192,244],"1":[19,100,133,170,181,193,233,245],")":[20],"will":[21],"be":[22,106,178],"useful":[23],"diagnosis":[26],"cancer":[28],"and":[29,61,91,214,246],"tissue":[32],"characterization.":[33],"The":[34,209],"present":[35],"problem":[36],"this":[38,72],"regard":[39],"deterioration":[42],"accuracy":[45,241],"due":[46,172],"to":[47,173,225,231],"various":[49],"factors":[50,176],"such":[51,69],"as":[52,195,197,221,223],"rotation":[54],"angle":[55],"error":[56,104,166,210],"180":[58],"deg":[59],"pulse":[60],"finite":[63],"repetition":[64],"for":[66,77,81],"imaging.":[67],"From":[68],"a":[70,96,122,161,206],"viewpcint,":[71],"paper":[73],"derived":[74],"an":[75,154],"expression":[76],"signal":[79],"intensity":[80],"inversion":[83,119,148],"recovery":[84],"image":[85,101,134,171,194,202],"(IR":[86],"image)":[87],"considering":[88],"those":[89],"factors,":[90],"it":[92],"shown":[94],"highly":[97],"accurate":[98],"with":[102,117],"small":[103],"can":[105,128,177],"constructed":[107],"by":[108,145,160,183,235],"proposed":[110,126,185,237],"method":[111,124],"from":[112,135,205],"at":[113],"least":[114],"three":[115,136],"images":[116,138,248],"different":[118],"times.":[120],"Then":[121],"simplified":[123],"which":[127,218],"derive":[129],"analytically":[130],"IR":[137],"obtained":[139,204],"without":[140],"using":[141],"iterative":[143],"calculation,":[144],"controlling":[146],"times":[149],"so":[150],"they":[152],"form":[153],"arithmetic":[155],"progression.":[156],"was":[158],"verified":[159],"computer":[162],"simulation":[163],"forementioned":[175],"kept":[179],"below":[180],"percent":[182,234],"method.":[186,238],"Using":[187],"MRI":[189],"system,":[190],"well":[196],"proton":[199],"density":[200],"(rH)":[201],"are":[203],"copper\u2010sulfate":[207],"phantom.":[208],"between":[211],"object":[213],"reconstructed":[216],"image,":[217],"has":[219],"been":[220],"large":[222],"7":[224],"15":[226],"percent,":[227],"now":[229],"suppressed":[230],"approximately":[232],"Thus,":[239],"improvement":[242],"rH":[247],"verified.":[250]},"counts_by_year":[],"updated_date":"2026-01-15T23:16:33.117629","created_date":"2025-10-10T00:00:00"}
