{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T10:03:13Z","timestamp":1789639393111,"version":"4.0.0"},"reference-count":68,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T00:00:00Z","timestamp":1788912000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T00:00:00Z","timestamp":1788912000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["analyticalsciencejournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["NMR in Biomedicine"],"published-print":{"date-parts":[[2026,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    The Iseult scanner delivered the first human brain images at 11.7\u2009T. Here, we bring forth the design of the RF coil used for these acquisitions, featuring 8 transmit and 32 receive channels, then evaluate its SNR and g\u2010factor advantages with respect to a similar coil at 7\u2009T. We attempt a deduction of the SNR dependency on field strength. First, we modeled our two compact coils for integration in a tight  local shimming device. Electromagnetic simulation results on two different anatomical phantoms (one male and one female) were used for SAR\/VOP, B1\n                    <jats:sup>+<\/jats:sup>\n                    , SNR\u2010 and g\u2010map predictions. Simulations were calibrated with acquisitions on a spherical agar phantom, and SNR measurements were based on a 3D\u2010GRE sequence. One volunteer was scanned at 7 and 11.7\u2009T for that purpose, allowing a preliminary evaluation of  in the \u2010SNR model. Both coils performed as expected from simulations provided some corrections. For the agar sphere, we found a global intrinsic SNR gain of 2.75 between 7 and 11.7\u2009T, corresponding to . In contrast the gain in the human brain was about 2.2, corresponding to , slightly less than previous results in the literature. Even though higher values are expected for an aqueous phantom because of its higher permittivity (increasing SNR thanks to the dielectric focusing effect), the main difference could be explained by physiological noise. As expected, the shorter wavelength induced by a higher  also results in a perceptible but limited reduction of\n                    <jats:italic>g<\/jats:italic>\n                    \u2010factors in simulations and measurements. In conclusion, this study highlighted the benefits of a high  in reception, without the potential bias of a different RF coil design; these benefits come with a slight decrease in transmission efficiency (due to additional losses in brain tissue at high frequencies) and a greater difficulty in homogenizing spin excitation.\n                  <\/jats:p>","DOI":"10.1002\/nbm.70390","type":"journal-article","created":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T12:06:33Z","timestamp":1788955593000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The Iseult Coil, a Hybrid RF Coil for the First Human Brain Images at 11.7\u2009T: Receive Performance Comparison With a Twin Coil at 7\u2009T"],"prefix":"10.1002","volume":"39","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2667-9387","authenticated-orcid":false,"given":"Alexis","family":"Amadon","sequence":"first","affiliation":[{"name":"Universit\u00e9 Paris\u2010Saclay, CEA, CNRS, NeuroSpin, BAOBAB  Gif\u2010sur\u2010Yvette 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":"Universit\u00e9 Paris\u2010Saclay, CEA, CNRS, NeuroSpin, BAOBAB  Gif\u2010sur\u2010Yvette France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8817-7756","authenticated-orcid":false,"given":"Guillaume","family":"Ferrand","sequence":"additional","affiliation":[{"name":"Universit\u00e9 Paris\u2010Saclay, CEA, Irfu, DACM  Gif\u2010sur\u2010Yvette 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":"Universit\u00e9 Paris\u2010Saclay, CEA, CNRS, NeuroSpin, BAOBAB  Gif\u2010sur\u2010Yvette France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0128-061X","authenticated-orcid":false,"given":"Franck","family":"Mauconduit","sequence":"additional","affiliation":[{"name":"Universit\u00e9 Paris\u2010Saclay, CEA, CNRS, NeuroSpin, BAOBAB  Gif\u2010sur\u2010Yvette France"}],"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":"Universit\u00e9 Paris\u2010Saclay, CEA, CNRS, NeuroSpin, BAOBAB  Gif\u2010sur\u2010Yvette France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9203-0247","authenticated-orcid":false,"given":"Alexandre","family":"Vignaud","sequence":"additional","affiliation":[{"name":"Universit\u00e9 Paris\u2010Saclay, CEA, CNRS, NeuroSpin, BAOBAB  Gif\u2010sur\u2010Yvette France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2144-2484","authenticated-orcid":false,"given":"Nicolas","family":"Boulant","sequence":"additional","affiliation":[{"name":"Universit\u00e9 Paris\u2010Saclay, CEA, CNRS, NeuroSpin, BAOBAB  Gif\u2010sur\u2010Yvette France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-7527-5867","authenticated-orcid":false,"given":"Michel","family":"Luong","sequence":"additional","affiliation":[{"name":"Universit\u00e9 Paris\u2010Saclay, CEA, Irfu, DACM  Gif\u2010sur\u2010Yvette France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,9]]},"reference":[{"key":"e_1_2_11_2_1","volume-title":"Advances in Magnetic Resonance Technology and Applications, Volume 10","author":"Markenroth Bloch 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