RF Aspects of High-Field Magnetic Resonance Imaging (HF-MRI): Recent Advances
High-field magnetic resonance imaging (HF-MRI) brings superior imaging with high contrast and signal-to-noise ratio (SNR). For scanning systems higher than 3.0 T and Larmor frequencies above 128 MHz, wavelength and higher tissue conductivity can cause distortion of the electromagnetic fields, leadin...
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| Veröffentlicht in: | IEEE journal of electromagnetics, RF and microwaves in medicine and biology RF and microwaves in medicine and biology, 2019-06, Vol.3 (2), p.111-119 |
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| container_title | IEEE journal of electromagnetics, RF and microwaves in medicine and biology |
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| creator | Caverly, Robert H. |
| description | High-field magnetic resonance imaging (HF-MRI) brings superior imaging with high contrast and signal-to-noise ratio (SNR). For scanning systems higher than 3.0 T and Larmor frequencies above 128 MHz, wavelength and higher tissue conductivity can cause distortion of the electromagnetic fields, leading to degraded image quality. This paper will show current trends in HF-MRI to mitigate some of these issues and provide a linkage between traditional MRI components and novel structures for HF-MRI. Transmit and receive structures, as well as the use of metamaterials for improved excitation and SNR, will be covered. Other examples of these recent trends will be potential antenna structures to replace current coil-based technology, and then finally, receiver/patient protection circuits will be covered. |
| doi_str_mv | 10.1109/JERM.2018.2879396 |
| format | Article |
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| ispartof | IEEE journal of electromagnetics, RF and microwaves in medicine and biology, 2019-06, Vol.3 (2), p.111-119 |
| issn | 2469-7249 2469-7257 |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Antennas Circuit protection Coils Electromagnetic fields Image degradation Image quality Magnetic resonance imaging Metamaterials NMR Nuclear magnetic resonance Power amplifiers Radio frequency Receivers Signal to noise ratio Transmitters Trends |
| title | RF Aspects of High-Field Magnetic Resonance Imaging (HF-MRI): Recent Advances |
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