{"id":"https://openalex.org/W3208170420","doi":"https://doi.org/10.1109/access.2021.3122122","title":"Performance Enhancement of an MTL Coil Loaded With High-Permittivity Dielectric Liner for 7 T Brain MRI","display_name":"Performance Enhancement of an MTL Coil Loaded With High-Permittivity Dielectric Liner for 7 T Brain MRI","publication_year":2021,"publication_date":"2021-01-01","ids":{"openalex":"https://openalex.org/W3208170420","doi":"https://doi.org/10.1109/access.2021.3122122","mag":"3208170420"},"language":"en","primary_location":{"id":"doi:10.1109/access.2021.3122122","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2021.3122122","pdf_url":"https://ieeexplore.ieee.org/ielx7/6287639/6514899/09584839.pdf","source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"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 Access","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://ieeexplore.ieee.org/ielx7/6287639/6514899/09584839.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5046424273","display_name":"Sana Ullah","orcid":"https://orcid.org/0000-0001-5671-6989"},"institutions":[{"id":"https://openalex.org/I4575257","display_name":"Hanyang University","ror":"https://ror.org/046865y68","country_code":"KR","type":"education","lineage":["https://openalex.org/I4575257"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Sana Ullah","raw_affiliation_strings":["Department of Electronics Engineering, Hanyang University, Seoul 04763, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0001-5671-6989","affiliations":[{"raw_affiliation_string":"Department of Electronics Engineering, Hanyang University, Seoul 04763, Republic of Korea","institution_ids":["https://openalex.org/I4575257"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5030882266","display_name":"Hyoungsuk Yoo","orcid":"https://orcid.org/0000-0001-5567-2566"},"institutions":[{"id":"https://openalex.org/I4575257","display_name":"Hanyang University","ror":"https://ror.org/046865y68","country_code":"KR","type":"education","lineage":["https://openalex.org/I4575257"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Hyoungsuk Yoo","raw_affiliation_strings":["Department of Electronics Engineering, Hanyang University, Seoul 04763, Republic of Korea. (e-mail: hsyoo@hanyang.ac.kr)","Department of Electronics Engineering, Hanyang University, Seoul 04763, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0001-5567-2566","affiliations":[{"raw_affiliation_string":"Department of Electronics Engineering, Hanyang University, Seoul 04763, Republic of Korea. (e-mail: hsyoo@hanyang.ac.kr)","institution_ids":["https://openalex.org/I4575257"]},{"raw_affiliation_string":"Department of Electronics Engineering, Hanyang University, Seoul 04763, Republic of Korea","institution_ids":["https://openalex.org/I4575257"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5030882266"],"corresponding_institution_ids":["https://openalex.org/I4575257"],"apc_list":{"value":1850,"currency":"USD","value_usd":1850},"apc_paid":{"value":1850,"currency":"USD","value_usd":1850},"fwci":0.4302,"has_fulltext":true,"cited_by_count":4,"citation_normalized_percentile":{"value":0.64236406,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":96},"biblio":{"volume":"9","issue":null,"first_page":"144417","last_page":"144425"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10378","display_name":"Advanced MRI Techniques and Applications","score":0.9997000098228455,"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":0.9997000098228455,"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/T11809","display_name":"Advanced NMR Techniques and Applications","score":0.9961000084877014,"subfield":{"id":"https://openalex.org/subfields/1607","display_name":"Spectroscopy"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12381","display_name":"Electron Spin Resonance Studies","score":0.9950000047683716,"subfield":{"id":"https://openalex.org/subfields/1304","display_name":"Biophysics"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/permittivity","display_name":"Permittivity","score":0.7246484160423279},{"id":"https://openalex.org/keywords/dielectric","display_name":"Dielectric","score":0.6628556847572327},{"id":"https://openalex.org/keywords/electromagnetic-coil","display_name":"Electromagnetic coil","score":0.643895149230957},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.6099389791488647},{"id":"https://openalex.org/keywords/nuclear-magnetic-resonance","display_name":"Nuclear magnetic resonance","score":0.4931744933128357},{"id":"https://openalex.org/keywords/dielectric-permittivity","display_name":"Dielectric permittivity","score":0.45933783054351807},{"id":"https://openalex.org/keywords/magnetic-resonance-imaging","display_name":"Magnetic resonance imaging","score":0.4124855399131775},{"id":"https://openalex.org/keywords/optoelectronics","display_name":"Optoelectronics","score":0.27841717004776},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.25674334168434143},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.22071686387062073},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.15024372935295105},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.12141594290733337},{"id":"https://openalex.org/keywords/radiology","display_name":"Radiology","score":0.0638766884803772}],"concepts":[{"id":"https://openalex.org/C168651791","wikidata":"https://www.wikidata.org/wiki/Q211569","display_name":"Permittivity","level":3,"score":0.7246484160423279},{"id":"https://openalex.org/C133386390","wikidata":"https://www.wikidata.org/wiki/Q184996","display_name":"Dielectric","level":2,"score":0.6628556847572327},{"id":"https://openalex.org/C30403606","wikidata":"https://www.wikidata.org/wiki/Q2981904","display_name":"Electromagnetic coil","level":2,"score":0.643895149230957},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.6099389791488647},{"id":"https://openalex.org/C46141821","wikidata":"https://www.wikidata.org/wiki/Q209402","display_name":"Nuclear magnetic resonance","level":1,"score":0.4931744933128357},{"id":"https://openalex.org/C2986736532","wikidata":"https://www.wikidata.org/wiki/Q211569","display_name":"Dielectric permittivity","level":4,"score":0.45933783054351807},{"id":"https://openalex.org/C143409427","wikidata":"https://www.wikidata.org/wiki/Q161238","display_name":"Magnetic resonance imaging","level":2,"score":0.4124855399131775},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.27841717004776},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.25674334168434143},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.22071686387062073},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.15024372935295105},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.12141594290733337},{"id":"https://openalex.org/C126838900","wikidata":"https://www.wikidata.org/wiki/Q77604","display_name":"Radiology","level":1,"score":0.0638766884803772}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/access.2021.3122122","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2021.3122122","pdf_url":"https://ieeexplore.ieee.org/ielx7/6287639/6514899/09584839.pdf","source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"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 Access","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:869e903d9e6141a6938fd113280fb78a","is_oa":true,"landing_page_url":"https://doaj.org/article/869e903d9e6141a6938fd113280fb78a","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Access, Vol 9, Pp 144417-144425 (2021)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1109/access.2021.3122122","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2021.3122122","pdf_url":"https://ieeexplore.ieee.org/ielx7/6287639/6514899/09584839.pdf","source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"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 Access","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.6299999952316284,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[{"id":"https://openalex.org/G181535548","display_name":null,"funder_award_id":"No. 2021-0-00490","funder_id":"https://openalex.org/F4320335489","funder_display_name":"Institute for Information and Communications Technology Promotion"},{"id":"https://openalex.org/G2617280023","display_name":null,"funder_award_id":"No. 2021-0-00490","funder_id":"https://openalex.org/F4320322030","funder_display_name":"Ministry of Science, ICT and Future Planning"},{"id":"https://openalex.org/G2820024838","display_name":null,"funder_award_id":"2021-0-00490","funder_id":"https://openalex.org/F4320335489","funder_display_name":"Institute for Information and Communications Technology Promotion"},{"id":"https://openalex.org/G4077152193","display_name":null,"funder_award_id":"2021-0-00490","funder_id":"https://openalex.org/F4320322030","funder_display_name":"Ministry of Science, ICT and Future Planning"}],"funders":[{"id":"https://openalex.org/F4320322030","display_name":"Ministry of Science, ICT and Future Planning","ror":"https://ror.org/032e49973"},{"id":"https://openalex.org/F4320335489","display_name":"Institute for Information and Communications Technology Promotion","ror":"https://ror.org/01g0hqq23"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3208170420.pdf","grobid_xml":"https://content.openalex.org/works/W3208170420.grobid-xml"},"referenced_works_count":35,"referenced_works":["https://openalex.org/W1970258416","https://openalex.org/W1973582208","https://openalex.org/W1982837734","https://openalex.org/W1984946695","https://openalex.org/W2004128826","https://openalex.org/W2015211760","https://openalex.org/W2022103098","https://openalex.org/W2039755246","https://openalex.org/W2061859062","https://openalex.org/W2066862495","https://openalex.org/W2067162284","https://openalex.org/W2073270879","https://openalex.org/W2081774390","https://openalex.org/W2103661935","https://openalex.org/W2115316466","https://openalex.org/W2120836547","https://openalex.org/W2134198072","https://openalex.org/W2140796340","https://openalex.org/W2148819092","https://openalex.org/W2149876746","https://openalex.org/W2312439608","https://openalex.org/W2316763796","https://openalex.org/W2409997765","https://openalex.org/W2548360937","https://openalex.org/W2593183986","https://openalex.org/W2625876760","https://openalex.org/W2777618668","https://openalex.org/W2790050156","https://openalex.org/W3088051854","https://openalex.org/W3128034544","https://openalex.org/W3128342894","https://openalex.org/W3129429445","https://openalex.org/W3132021723","https://openalex.org/W4287332946","https://openalex.org/W6791028261"],"related_works":["https://openalex.org/W2061347359","https://openalex.org/W2061952983","https://openalex.org/W2093867097","https://openalex.org/W2544449737","https://openalex.org/W2088995601","https://openalex.org/W1980242998","https://openalex.org/W1589652769","https://openalex.org/W2031371811","https://openalex.org/W2069308613","https://openalex.org/W2050159326"],"abstract_inverted_index":{"In":[0,195],"a":[1,49,57,186,255,279],"multi-element":[2,50,284],"microstrip":[3],"transmission":[4,64],"line":[5],"(MTL)":[6],"transmit":[7,11,52,110,131,226,286],"array":[8,53,77,111,132,227,287],"coil,":[9],"the":[10,23,29,36,46,63,70,86,90,117,122,128,139,147,150,152,161,173,177,197,201,207,217,224,230,247,267],"field":[12],"(B1+)":[13],"distribution":[14],"is":[15,67,80,119,154,232,238],"inhomogeneous":[16],"due":[17],"to":[18,34,146,160,172,188,243,265],"its":[19,95],"standing-wave":[20],"nature,":[21],"and":[22,31,38,85,103,116,125,168,204,213,251,283],"interference":[24],"effects":[25],"can":[26],"severely":[27],"degrade":[28],"B1+":[30,202],"imaging.":[32],"Therefore,":[33],"improve":[35],"homogeneity":[37,203],"strength":[39],"of":[40,48,89,193,206,223],"B1+,":[41],"this":[42],"study":[43],"focuses":[44],"on":[45],"development":[47],"MTL":[51,75,109,225,285],"coil":[54,79,112,133,208,228,288],"integrated":[55],"with":[56,107,209,229,278],"dielectric":[58],"liner":[59],"(DL)":[60],"material.":[61],"Furthermore,":[62],"efficiency":[65,182],"(Tx,eff)":[66],"improved":[68,155],"in":[69,138,246],"head":[71,78,162,248],"region.":[72],"An":[73],"eight-element":[74],"transmits":[76],"investigated":[81],"using":[82,249],"thinner":[83],"DLs,":[84],"optimized":[87],"dimensions":[88],"DL":[91,123,178,281],"are":[92,105],"found":[93],"from":[94,240],"resonant":[96],"mode":[97],"at":[98,113,141,166],"7":[99,114],"Tesla":[100],"(T).":[101],"Simulations":[102],"measurements":[104],"performed":[106],"an":[108,181],"T,":[115],"performance":[118],"analyzed":[120],"for":[121],"positions":[124],"dimensions.":[126],"Remarkably,":[127],"proposed":[129,273,291],"DLs-integrated":[130],"system":[134],"offered":[135],"significant":[136],"improvements":[137],"Tx,eff":[140,153,190,205],"different":[142],"DLs":[143,210,231,250],"positions.":[144],"Compared":[145],"case":[148],"without":[149],"DL,":[151],"by":[156,211],"9%":[157,187],"(DL":[158,165,170],"close":[159,171],"model),":[163],"15%":[164],"center),":[167],"39%":[169,189],"RF":[174],"coil).":[175],"Interestingly,":[176],"acts":[179],"as":[180],"tuner":[183],"element":[184],"exhibiting":[185],"tuning":[191],"range":[192],"improvement.":[194],"addition,":[196],"RF-shimming":[198,252],"technique":[199],"improves":[200],"21%":[212],"42%,":[214],"respectively.":[215],"Moreover,":[216],"specific":[218,256],"absorption":[219],"rate":[220],"(SAR)":[221],"analysis":[222],"performed.":[233],"The":[234,272],"peak":[235],"10g-averaged":[236],"SAR":[237],"reduced":[239],"3.1":[241],"W/kg":[242,245],"2.13":[244],"technique.":[253],"Finally,":[254],"slice":[257],"selective":[258],"gradient":[259],"recalled":[260],"echo":[261],"sequence":[262],"was":[263],"used":[264],"obtain":[266],"head\u2019s":[268],"magnetic":[269],"resonance":[270],"images.":[271],"work":[274],"exhibits":[275],"salient":[276],"features":[277],"smaller":[280],"size":[282],"than":[289],"other":[290],"works.":[292]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":2}],"updated_date":"2026-05-06T08:25:59.206177","created_date":"2025-10-10T00:00:00"}
