{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T10:35:16Z","timestamp":1774953316848,"version":"3.50.1"},"reference-count":32,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2021,9,8]],"date-time":"2021-09-08T00:00:00Z","timestamp":1631059200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["U01-EB025144"],"award-info":[{"award-number":["U01-EB025144"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["S10-RR029672"],"award-info":[{"award-number":["S10-RR029672"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["P41-EB015894"],"award-info":[{"award-number":["P41-EB015894"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["P41-EB027061"],"award-info":[{"award-number":["P41-EB027061"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["P30-NS076408"],"award-info":[{"award-number":["P30-NS076408"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]},{"name":"BK21 FOUR program of the Education and Research Program for Future ICT Pioneers","award":["A0426-20210100"],"award-info":[{"award-number":["A0426-20210100"]}]},{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["NRF-2020R1A2C4001623"],"award-info":[{"award-number":["NRF-2020R1A2C4001623"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Hankuk University of Foreign Studies Research Fund","award":["2021"],"award-info":[{"award-number":["2021"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>For human head magnetic resonance imaging at 10.5 tesla (T), we built an 8-channel transceiver dipole antenna array and evaluated the influence of coaxial feed cables. The influence of coaxial feed cables was evaluated in simulation and compared against a physically constructed array in terms of transmit magnetic field (B1+) and specific absorption rate (SAR) efficiency. A substantial drop (23.1% in simulation and 20.7% in experiment) in B1+ efficiency was observed with a tight coaxial feed cable setup. For the investigation of the feed location, the center-fed dipole antenna array was compared to two 8-channel end-fed arrays: monopole and sleeve antenna arrays. The simulation results with a phantom indicate that these arrays achieved ~24% higher SAR efficiency compared to the dipole antenna array. For a human head model, we observed 30.8% lower SAR efficiency with the 8-channel monopole antenna array compared to the phantom. Importantly, our simulation with the human model indicates that the sleeve antenna arrays can achieve 23.8% and 21% higher SAR efficiency compared to the dipole and monopole antenna arrays, respectively. Finally, we obtained high-resolution human cadaver images at 10.5 T with the 8-channel sleeve antenna array.<\/jats:p>","DOI":"10.3390\/s21186000","type":"journal-article","created":{"date-parts":[[2021,9,8]],"date-time":"2021-09-08T02:41:07Z","timestamp":1631068867000},"page":"6000","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Evaluation of 8-Channel Radiative Antenna Arrays for Human Head Imaging at 10.5 Tesla"],"prefix":"10.3390","volume":"21","author":[{"given":"Myung Kyun","family":"Woo","sequence":"first","affiliation":[{"name":"Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN 55455, USA"},{"name":"Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, Korea"}]},{"given":"Lance","family":"DelaBarre","sequence":"additional","affiliation":[{"name":"Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN 55455, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1743-8888","authenticated-orcid":false,"given":"Matt Thomas","family":"Waks","sequence":"additional","affiliation":[{"name":"Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN 55455, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8737-6278","authenticated-orcid":false,"given":"Young Woo","family":"Park","sequence":"additional","affiliation":[{"name":"Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN 55455, USA"}]},{"given":"Russell Luke","family":"Lagore","sequence":"additional","affiliation":[{"name":"Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN 55455, USA"}]},{"given":"Steve","family":"Jungst","sequence":"additional","affiliation":[{"name":"Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN 55455, USA"}]},{"given":"Yigitcan","family":"Eryaman","sequence":"additional","affiliation":[{"name":"Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN 55455, USA"}]},{"given":"Se-Hong","family":"Oh","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering, Hankuk University of Foreign Studies, Yongin 17035, Korea"}]},{"given":"Kamil","family":"Ugurbil","sequence":"additional","affiliation":[{"name":"Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN 55455, USA"}]},{"given":"Gregor","family":"Adriany","sequence":"additional","affiliation":[{"name":"Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN 55455, USA"}]}],"member":"1968","published-online":{"date-parts":[[2021,9,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"11796","DOI":"10.1073\/pnas.0610821104","article-title":"High-field MRI of brain cortical substructure based on signal phase","volume":"104","author":"Duyn","year":"2007","journal-title":"Proc. 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