Abstrakti
In this contribution, we investigate the effect of a resonant high-impedance shield as a part of a birdcage coil for human brain imaging at 7 T. On a homogeneous phantom, it was shown that the loading of the birdcage coil to the sample can be enhanced by replacing a conventional copper shield with the high-impedance boundary with frequency-dependent surface impedance. To demonstrate this effect, we perform a numerical simulation of an extended birdcage coil with the high-impedance shield. The extended coil is much more comfortable for a patient and creates a lower local SAR. It has been shown that the extended coil equipped with the high-impedance shield has the same efficiency as a standard-size coil with the copper shield.
Alkuperäiskieli | Englanti |
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Otsikko | 5th International Conference on Metamaterials and Nanophotonics, METANANO 2020 |
Toimittajat | Pavel Belov, Mihail Petrov |
Kustantaja | American Institute of Physics |
ISBN (elektroninen) | 9780735440340 |
DOI - pysyväislinkit | |
Tila | Julkaistu - 8 jouluk. 2020 |
OKM-julkaisutyyppi | A4 Artikkeli konferenssijulkaisussa |
Tapahtuma | International Conference on Metamaterials and Nanophotonics - Virtual, Online, Tbilisi, Georgia Kesto: 14 syysk. 2020 → 18 syysk. 2020 Konferenssinumero: 5 https://premc.org/metanano2020/program/ |
Julkaisusarja
Nimi | AIP Conference Proceedings |
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Vuosikerta | 2300 |
ISSN (painettu) | 0094-243X |
ISSN (elektroninen) | 1551-7616 |
Conference
Conference | International Conference on Metamaterials and Nanophotonics |
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Lyhennettä | METANANO |
Maa/Alue | Georgia |
Kaupunki | Tbilisi |
Ajanjakso | 14/09/2020 → 18/09/2020 |
www-osoite |