{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T07:56:34Z","timestamp":1789718194809,"version":"4.0.1"},"reference-count":53,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T00:00:00Z","timestamp":1782345600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T00:00:00Z","timestamp":1782345600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001665","name":"Agence Nationale de la Recherche","doi-asserted-by":"publisher","award":["ANR\u201021\u2010ESRE\u20100006"],"award-info":[{"award-number":["ANR\u201021\u2010ESRE\u20100006"]}],"id":[{"id":"10.13039\/501100001665","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100010661","name":"Horizon 2020 Framework Programme","doi-asserted-by":"publisher","award":["885876"],"award-info":[{"award-number":["885876"]}],"id":[{"id":"10.13039\/100010661","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Magnetic Resonance in Med"],"published-print":{"date-parts":[[2026,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To design and develop an 8\u2010channel transmit 32\u2010channel receive 11.7T head coil for the strongest human MRI scanner to date, demonstrate safety, and evaluate signal\u2010to\u2010noise ratio (SNR) gains compared to 7T, the most used ultra\u2010high\u2010field (UHF) platform.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      The transmit array design incorporated a folded\u2010end radiofrequency (RF) shield to mitigate wave propagation in the scanner bore. The receive array consisted of 32\u2010overlapped loops constructed on a helmet size\u2010matched with the industry standard 7T head coil. The transmit array was characterized using B\n                      <jats:sub>1<\/jats:sub>\n                      <jats:sup>+<\/jats:sup>\n                      mapping and MR thermometry, whereas the receive array performance was evaluated by measuring SNR at 7T and 11.7T using a lightbulb\u2010shaped phantom filled with a tissue equivalent solution.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Loss due to wave propagation was 4.5% of the input power for the chosen RF shield. The mean magnitude of the complex correlations between the simulated and measured single channel B\n                      <jats:sub>1<\/jats:sub>\n                      <jats:sup>+<\/jats:sup>\n                      maps was 94%, which highlights minimal interaction between the transmit and receive arrays. An SNR gain of three\u2010fold was achieved in the phantom centre. In the periphery, representing the cortex, the SNR gain was 2.65\u2010fold, and the average gain over the whole volume was a factor of 2.69. The g\u2010factors of the 11.7T array were lower than the reference 7T coil due to the distinct coil sensitivities at higher frequency.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>\n                      We report substantial SNR gains over the whole volume at 11.7T using a fully overlapped 32\u2010channel loop array. The central SNR gain of B\n                      <jats:sub>0<\/jats:sub>\n                      <jats:sup>2.14<\/jats:sup>\n                      agrees with the theoretical prediction, while we also gain supra\u2010linearly in the periphery.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/mrm.70473","type":"journal-article","created":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T14:10:52Z","timestamp":1782396652000},"page":"2004-2018","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Design of an 8\u2010Channel Transmit 32\u2010Channel Receive 11.7T Head Coil and Evaluation of SNR Gains"],"prefix":"10.1002","volume":"96","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4170-777X","authenticated-orcid":false,"given":"Son","family":"Chu","sequence":"first","affiliation":[{"name":"Imaging Centre of Excellence University of Glasgow  Glasgow UK"},{"name":"MR CoilTech Limited  Glasgow UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeslin Parackal","family":"Issac","sequence":"additional","affiliation":[{"name":"Imaging Centre of Excellence University of Glasgow  Glasgow UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4767-8738","authenticated-orcid":false,"given":"Caroline","family":"Le Ster","sequence":"additional","affiliation":[{"name":"University of Paris\u2010Saclay, CEA, CNRS, BAOBAB, NeuroSpin  Gif sur Yvette France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2667-9387","authenticated-orcid":false,"given":"Alexis","family":"Amadon","sequence":"additional","affiliation":[{"name":"University of Paris\u2010Saclay, CEA, CNRS, BAOBAB, NeuroSpin  Gif sur Yvette France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4997-2738","authenticated-orcid":false,"given":"Vincent","family":"Gras","sequence":"additional","affiliation":[{"name":"University of Paris\u2010Saclay, CEA, CNRS, BAOBAB, NeuroSpin  Gif sur Yvette France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6592-5034","authenticated-orcid":false,"given":"Paul\u2010Fran\u00e7ois","family":"Gapais","sequence":"additional","affiliation":[{"name":"University of Paris\u2010Saclay, CEA, CNRS, BAOBAB, NeuroSpin  Gif sur Yvette France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7021-1063","authenticated-orcid":false,"given":"R\u00fcdiger","family":"Stirnberg","sequence":"additional","affiliation":[{"name":"MR Physics, German Center for Neurodegenerative Diseases (DZNE)  Bonn Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2144-2484","authenticated-orcid":false,"given":"Nicolas","family":"Boulant","sequence":"additional","affiliation":[{"name":"University of Paris\u2010Saclay, CEA, CNRS, BAOBAB, NeuroSpin  Gif sur Yvette France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3146-6079","authenticated-orcid":false,"given":"Shajan","family":"Gunamony","sequence":"additional","affiliation":[{"name":"Imaging Centre of Excellence University of Glasgow  Glasgow UK"},{"name":"MR CoilTech Limited  Glasgow UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,6,25]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41592-023-02068-7"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.22632"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.28131"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41592-024-02472-7"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10334-023-01081-3"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10334-023-01063-5"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1038\/nature07752"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.29654"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.1910380414"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1522-2594(199911)42:5<952::AID-MRM16>3.0.CO;2-S"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.10171"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1002\/nbm.1050"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.27695"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.30450"},{"issue":"9","key":"e_1_2_9_16_1","first-page":"870","article-title":"A 16\u2010Channel Dual\u2010Row Transmit Array in Combination With a 31\u2010Element Receive Array for Human Brain Imaging at 9.4 T","volume":"71","author":"Gunamony S.","year":"2014","journal-title":"Magnetic Resonance in Medicine"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.29347"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.30315"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.30476"},{"key":"e_1_2_9_20_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.30274"},{"key":"e_1_2_9_21_1","doi-asserted-by":"publisher","DOI":"10.1002\/1522-2586(200007)12:1<46::AID-JMRI6>3.0.CO;2-D"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.20183"},{"key":"e_1_2_9_23_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.27207"},{"key":"e_1_2_9_24_1","doi-asserted-by":"publisher","DOI":"10.1002\/nbm.3290"},{"key":"e_1_2_9_25_1","unstructured":"N.De Zanche C.Van den Berg D.Brunner et al. \u201cISMRM Best Practices for Safety Testing of Experimental RF Hardware \u201d(2022)."},{"key":"e_1_2_9_26_1","unstructured":"N.Boulant V.Gras A.Amadon M.Luong G.Ferrand andA.Vignaud \u201cWorkflow Proposal for Defining SAR Safety Margins in Parallel Transmission \u201dinProceedings of the 26th annual ISMRM meeting (2018)."},{"key":"e_1_2_9_27_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jmr.2009.06.005"},{"key":"e_1_2_9_28_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10334-013-0419-y"},{"key":"e_1_2_9_29_1","article-title":"The \u201cLoopole\u201d Antenna: A Hybrid Coil Combining Loop and Electric Dipole Properties for Ultra\u2010High\u2010Field MRI","volume":"1","author":"Lakshmanan K.","year":"2020","journal-title":"Concepts in Magnetic Resonance Part B"},{"key":"e_1_2_9_30_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.22886"},{"key":"e_1_2_9_31_1","unstructured":"G.Wiggins B.Zhang R.Lattanzi G.Chen andD.Sodickson \u201cThe Electric Dipole Array: An Attempt to Match the Ideal Current Pattern for Central SNR at 7 Tesla \u201din Proceedings of the 20th annual ISMRM meeting (2012)."},{"issue":"3","key":"e_1_2_9_32_1","first-page":"526","article-title":"An In Vivo NMR Probe Circuit for Improved Sensitivity","volume":"54","author":"Murphy\u2010Boesch J.","year":"1969","journal-title":"Journal of Magnetic Resonance"},{"key":"e_1_2_9_33_1","doi-asserted-by":"publisher","DOI":"10.3389\/fphy.2021.701330"},{"key":"e_1_2_9_34_1","volume-title":"Proceedings of the Annual Meeting of the International Society of Magnetic Resonance in Medicine","author":"Chu S.","year":"2024"},{"key":"e_1_2_9_35_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.30211"},{"key":"e_1_2_9_36_1","unstructured":"S.GunamonyandJ.Bause \u201cConstruction of Transmit Arrays \u201din Proceedings of the 25th annual ISMRM meeting (2017)."},{"key":"e_1_2_9_37_1","unstructured":"S.GunamonyandS.Chu \u201c\u201cHow to Build an 8\u2010Channel Transceiver Array?\u201d; Weekend Course on Developing RF Coils (with live demo) \u201din Proceedings of the 34th annual ISMRM Meeting(2026)."},{"key":"e_1_2_9_38_1","doi-asserted-by":"publisher","DOI":"10.1088\/0031-9155\/55\/2\/N01"},{"key":"e_1_2_9_39_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.28739"},{"key":"e_1_2_9_40_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.22927"},{"key":"e_1_2_9_41_1","doi-asserted-by":"publisher","DOI":"10.1088\/1361-6560\/ada683"},{"key":"e_1_2_9_42_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.26468"},{"key":"e_1_2_9_43_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.21120"},{"key":"e_1_2_9_44_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.1910160203"},{"key":"e_1_2_9_45_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.70136"},{"key":"e_1_2_9_46_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.29391"},{"key":"e_1_2_9_47_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.70251"},{"key":"e_1_2_9_48_1","unstructured":"J. P.Issac S.Chu R.Bowtell andS.Gunamony \u201cElectromagnetic Evaluation of RF Shield Designs for Ultra\u2010High Field Transmit Arrays \u201din Proceedings of the 34th annual ISMRM meeting (2026)."},{"key":"e_1_2_9_49_1","volume-title":"Electromagnetic Materials and Devices","author":"Kesari V.","year":"2019"},{"key":"e_1_2_9_50_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.30108"},{"key":"e_1_2_9_51_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.23198"},{"key":"e_1_2_9_52_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.26564"},{"key":"e_1_2_9_53_1","doi-asserted-by":"publisher","DOI":"10.1002\/cmr.b.21268"},{"key":"e_1_2_9_54_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.26803"}],"container-title":["Magnetic Resonance in Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/mrm.70473","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/mrm.70473","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/mrm.70473","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T20:44:02Z","timestamp":1785444242000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/mrm.70473"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,6,25]]},"references-count":53,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2026,10]]}},"alternative-id":["10.1002\/mrm.70473"],"URL":"https:\/\/doi.org\/10.1002\/mrm.70473","archive":["Portico"],"relation":{},"ISSN":["0740-3194","1522-2594"],"issn-type":[{"value":"0740-3194","type":"print"},{"value":"1522-2594","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,6,25]]},"assertion":[{"value":"2026-01-24","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-06-03","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-06-25","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}