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- Title
Design of a radiative surface coil array element at 7 T: The single-side adapted dipole antenna.
- Authors
Raaijmakers, A. J. E.; Ipek, O.; Klomp, D. W. J.; Possanzini, C.; Harvey, P. R.; Lagendijk, J. J. W.; van den Berg, C. A. T.
- Abstract
Ultra high field MR imaging (≥7 T) of deeply located targets in the body is facing some radiofrequency-field related challenges: interference patterns, reduced penetration depth, and higher Specific Absorbtion Ratio (SAR) levels. These can be alleviated by redesigning the elements of the transmit or transceive array. This is because at these high excitation field ( B1) frequencies, conventional array element designs may have become suboptimal. In this work, an alternative design approach is presented, regarding coil array elements as antennas. Following this approach, the Poynting vector of the element should be oriented towards the imaging target region. The single-side adapted dipole antenna is a novel design that fulfills this requirement. The performance of this design as a transmit coil array element has been characterized by comparison with three other, more conventional designs using finite difference time domain (FDTD) simulations and B
- Publication
Magnetic Resonance in Medicine, 2011, Vol 66, Issue 5, p1488
- ISSN
0740-3194
- Publication type
Article
- DOI
10.1002/mrm.22886