Abstract
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.
| Original language | English |
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| Title of host publication | 5th International Conference on Metamaterials and Nanophotonics, METANANO 2020 |
| Editors | Pavel Belov, Mihail Petrov |
| Publisher | American Institute of Physics |
| ISBN (Electronic) | 9780735440340 |
| DOIs | |
| Publication status | Published - 8 Dec 2020 |
| MoE publication type | A4 Conference publication |
| Event | International Conference on Metamaterials and Nanophotonics - Virtual, Online, Tbilisi, Georgia Duration: 14 Sept 2020 → 18 Sept 2020 Conference number: 5 https://premc.org/metanano2020/program/ |
Publication series
| Name | AIP Conference Proceedings |
|---|---|
| Volume | 2300 |
| ISSN (Print) | 0094-243X |
| ISSN (Electronic) | 1551-7616 |
Conference
| Conference | International Conference on Metamaterials and Nanophotonics |
|---|---|
| Abbreviated title | METANANO |
| Country/Territory | Georgia |
| City | Tbilisi |
| Period | 14/09/2020 → 18/09/2020 |
| Internet address |