{"id":"https://openalex.org/W7161791363","doi":"https://doi.org/10.1109/isbi61048.2026.11515345","title":"Pretext Task Adversarial Learning for Unpaired Low-Field to Ultra High-Field MRI Synthesis","display_name":"Pretext Task Adversarial Learning for Unpaired Low-Field to Ultra High-Field MRI Synthesis","publication_year":2026,"publication_date":"2026-04-08","ids":{"openalex":"https://openalex.org/W7161791363","doi":"https://doi.org/10.1109/isbi61048.2026.11515345"},"language":null,"primary_location":{"id":"doi:10.1109/isbi61048.2026.11515345","is_oa":false,"landing_page_url":"https://doi.org/10.1109/isbi61048.2026.11515345","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2026 IEEE 23rd International Symposium on Biomedical Imaging (ISBI)","raw_type":"proceedings-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/A5114973376","display_name":"Zhenxuan Zhang","orcid":"https://orcid.org/0009-0002-2904-2848"},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":true,"raw_author_name":"Zhenxuan Zhang","raw_affiliation_strings":["Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL","institution_ids":["https://openalex.org/I47508984"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5065454976","display_name":"Peiyuan Jing","orcid":null},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Peiyuan Jing","raw_affiliation_strings":["Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL","institution_ids":["https://openalex.org/I47508984"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136552438","display_name":"Zi Wang","orcid":null},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Zi Wang","raw_affiliation_strings":["Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL","institution_ids":["https://openalex.org/I47508984"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5106602239","display_name":"Ula Briski","orcid":null},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Ula Briski","raw_affiliation_strings":["Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL","institution_ids":["https://openalex.org/I47508984"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5114817613","display_name":"Coraline Beitone","orcid":null},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Coraline Beitone","raw_affiliation_strings":["Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL","institution_ids":["https://openalex.org/I47508984"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136546858","display_name":"Yue Yang","orcid":null},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Yue Yang","raw_affiliation_strings":["Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL","institution_ids":["https://openalex.org/I47508984"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5039464012","display_name":"Yinzhe Wu","orcid":"https://orcid.org/0000-0003-3857-6112"},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Yinzhe Wu","raw_affiliation_strings":["Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL","institution_ids":["https://openalex.org/I47508984"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5011975403","display_name":"Fanwen Wang","orcid":"https://orcid.org/0000-0001-5491-8333"},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Fanwen Wang","raw_affiliation_strings":["Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL","institution_ids":["https://openalex.org/I47508984"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101182554","display_name":"Liutao Yang","orcid":null},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Liutao Yang","raw_affiliation_strings":["Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL","institution_ids":["https://openalex.org/I47508984"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136511175","display_name":"Jiahao Huang","orcid":null},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Jiahao Huang","raw_affiliation_strings":["Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL","institution_ids":["https://openalex.org/I47508984"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5049053722","display_name":"Zhifan Gao","orcid":"https://orcid.org/0000-0002-1576-4439"},"institutions":[{"id":"https://openalex.org/I157773358","display_name":"Sun Yat-sen University","ror":"https://ror.org/0064kty71","country_code":"CN","type":"education","lineage":["https://openalex.org/I157773358"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhifan Gao","raw_affiliation_strings":["School of Biomedical Engineering, Sun Yat-sen University,Guangzhou,China,510006"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Biomedical Engineering, Sun Yat-sen University,Guangzhou,China,510006","institution_ids":["https://openalex.org/I157773358"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136589695","display_name":"Guang Yang","orcid":null},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Guang Yang","raw_affiliation_strings":["Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL","institution_ids":["https://openalex.org/I47508984"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5136538314","display_name":"Peter J. Lally","orcid":null},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Peter J. Lally","raw_affiliation_strings":["Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Imperial College London,Bioengineering Department and Imperial-X,London,UK,W12 7SL","institution_ids":["https://openalex.org/I47508984"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":13,"corresponding_author_ids":["https://openalex.org/A5114973376"],"corresponding_institution_ids":["https://openalex.org/I47508984"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.92928298,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"4"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10378","display_name":"Advanced MRI Techniques and Applications","score":0.2624000012874603,"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":0.2624000012874603,"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/T10775","display_name":"Generative Adversarial Networks and Image Synthesis","score":0.10119999945163727,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10500","display_name":"Sparse and Compressive Sensing Techniques","score":0.0640999972820282,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/pretext","display_name":"Pretext","score":0.7935000061988831},{"id":"https://openalex.org/keywords/task","display_name":"Task (project management)","score":0.6328999996185303},{"id":"https://openalex.org/keywords/adversarial-system","display_name":"Adversarial system","score":0.5670999884605408},{"id":"https://openalex.org/keywords/key","display_name":"Key (lock)","score":0.3873000144958496},{"id":"https://openalex.org/keywords/feature","display_name":"Feature (linguistics)","score":0.259799987077713}],"concepts":[{"id":"https://openalex.org/C2779627259","wikidata":"https://www.wikidata.org/wiki/Q779763","display_name":"Pretext","level":3,"score":0.7935000061988831},{"id":"https://openalex.org/C2780451532","wikidata":"https://www.wikidata.org/wiki/Q759676","display_name":"Task (project management)","level":2,"score":0.6328999996185303},{"id":"https://openalex.org/C37736160","wikidata":"https://www.wikidata.org/wiki/Q1801315","display_name":"Adversarial system","level":2,"score":0.5670999884605408},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5464000105857849},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.5153999924659729},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.3873000144958496},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.3483999967575073},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.3100999891757965},{"id":"https://openalex.org/C2776401178","wikidata":"https://www.wikidata.org/wiki/Q12050496","display_name":"Feature (linguistics)","level":2,"score":0.259799987077713},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.249099999666214}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/isbi61048.2026.11515345","is_oa":false,"landing_page_url":"https://doi.org/10.1109/isbi61048.2026.11515345","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2026 IEEE 23rd International Symposium on Biomedical Imaging (ISBI)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W1901129140","https://openalex.org/W2891158090","https://openalex.org/W2962793481","https://openalex.org/W3129493741","https://openalex.org/W3157723514","https://openalex.org/W3176466780","https://openalex.org/W3197078253","https://openalex.org/W4223476230","https://openalex.org/W4280499763","https://openalex.org/W4296268709","https://openalex.org/W4362604134","https://openalex.org/W4376133665","https://openalex.org/W4385715822","https://openalex.org/W4396622776"],"related_works":[],"abstract_inverted_index":{"Given":[0],"the":[1],"scarcity":[2],"and":[3,34,45,93,96,108],"high":[4],"cost":[5],"of":[6],"high-field":[7,10,60],"MRI,":[8],"synthesizing":[9],"images":[11],"from":[12,31,91],"low-field":[13],"MRI":[14,28,61,113],"offers":[15],"great":[16],"potential":[17],"for":[18,59,73,87],"augmenting":[19],"limited":[20],"data":[21,127],"in":[22],"downstream":[23,130],"tasks":[24],"(e.g.,":[25],"segmentation).":[26],"Low-field":[27],"typically":[29],"suffers":[30],"low":[32],"SNR":[33],"spatial":[35],"resolution,":[36],"making":[37],"cross-domain":[38],"synthesis":[39],"challenging":[40],"due":[41],"to":[42,128],"feature":[43],"misalignment":[44],"anatomical":[46],"distortion.":[47],"To":[48],"address":[49],"this,":[50],"we":[51],"propose":[52],"a":[53,67,81,98],"Pretext":[54],"Task":[55],"Adversarial":[56],"(PTA)":[57],"framework":[58],"synthesis.":[62],"It":[63],"consists":[64],"of:":[65],"(1)":[66],"Slice-wise":[68],"Gap":[69],"Perception":[70],"(SGP)":[71],"network":[72,86],"aligning":[74],"inter-slice":[75],"inconsistencies":[76],"via":[77],"contrastive":[78],"learning;":[79],"(2)":[80],"Local":[82],"Structure":[83],"Correction":[84],"(LSC)":[85],"refining":[88],"local":[89],"details":[90],"rotated":[92],"masked":[94],"inputs;":[95],"(3)":[97],"pretext-guided":[99],"adversarial":[100],"training":[101],"that":[102],"enhances":[103],"realism":[104],"through":[105],"additional":[106],"supervision":[107],"discrimination.":[109],"Experiments":[110],"on":[111],"low-to-ultra-high-field":[112],"demonstrate":[114],"state-of-the-art":[115],"performance":[116],"(FID":[117],"=16.892,":[118],"IS":[119],"=1.933,":[120],"MS-SSIM":[121],"=0.324),":[122],"generating":[123],"anatomically":[124],"consistent":[125],"high-field-like":[126],"improve":[129],"training.":[131],"The":[132],"code":[133],"is":[134],"available":[135],"at:":[136],"https://github.com/Zhenxuan-Zhang/PTA4Unpaired_HF_MRI_SYN.":[137]},"counts_by_year":[],"updated_date":"2026-05-22T06:13:13.366637","created_date":"2026-05-21T00:00:00"}
