{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T02:25:04Z","timestamp":1774578304086,"version":"3.50.1"},"reference-count":52,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2019,12,12]],"date-time":"2019-12-12T00:00:00Z","timestamp":1576108800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100010661","name":"Horizon 2020","doi-asserted-by":"publisher","award":["764479"],"award-info":[{"award-number":["764479"]}],"id":[{"id":"10.13039\/100010661","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>We present an approach to enhance microwave brain imaging with an innovative metamaterial (MM) planar design based on a cross-shaped split-ring resonator (SRR-CS). The proposed metasurface is incorporated in different setups, and its interaction with EM waves is studied both experimentally and by using CST Microwave Studio\u00ae and is compared to a \u201cno MM\u201d case scenario. We show that the MM can enhance the penetration of the transmitted signals into the human head when placed in contact with skin tissue, acting as an impedance-matching layer. In addition, we show that the MM can improve the transceivers\u2019 ability to detect useful \u201cweak\u201d signals when incorporated in a headband scanner for brain imaging by increasing the signal difference from a blood-like dielectric target introduced into the brain volume. Our results suggest that the proposed MM film can be a powerful hardware advance towards the development of scanners for brain haemorrhage detection and monitoring.<\/jats:p>","DOI":"10.3390\/s19245472","type":"journal-article","created":{"date-parts":[[2019,12,12]],"date-time":"2019-12-12T11:06:41Z","timestamp":1576148801000},"page":"5472","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":35,"title":["Feasibility Study of Enhancing Microwave Brain Imaging Using Metamaterials"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7703-3909","authenticated-orcid":false,"given":"Eleonora","family":"Razzicchia","sequence":"first","affiliation":[{"name":"Faculty of Natural and Mathematical Sciences, King\u2019s College London, Strand, London WC2R 2LS, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0924-9078","authenticated-orcid":false,"given":"Ioannis","family":"Sotiriou","sequence":"additional","affiliation":[{"name":"Faculty of Natural and Mathematical Sciences, King\u2019s College London, Strand, London WC2R 2LS, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7128-3859","authenticated-orcid":false,"given":"Helena","family":"Cano-Garcia","sequence":"additional","affiliation":[{"name":"MediWise Ltd., London E1 2AX, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Efthymios","family":"Kallos","sequence":"additional","affiliation":[{"name":"MediWise Ltd., London E1 2AX, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"George","family":"Palikaras","sequence":"additional","affiliation":[{"name":"MediWise Ltd., London E1 2AX, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9759-2820","authenticated-orcid":false,"given":"Panagiotis","family":"Kosmas","sequence":"additional","affiliation":[{"name":"Faculty of Natural and Mathematical Sciences, King\u2019s College London, Strand, London WC2R 2LS, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,12,12]]},"reference":[{"key":"ref_1","unstructured":"(2019, December 05). 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