Application of Litz Wires in MRI Coil Design up to 15 MHz
Robert Kowal1,2, Ivan Fomin1,2, Marcus Prier1,3, Enrico Pannicke1,2, Georg Rose1,2, and Oliver Speck1,3
1Research Campus STIMULATE, Otto-von-Guericke University, Magdeburg, Germany, 2Institute for Medical Engineering, Otto-von-Guericke University, Magdeburg, Germany, 3Department for Biomedical Magnetic Resonance, Otto-von-Guericke University, Magdeburg, Germany
The use of litz wire in their optimized frequency range can provide increased efficiency of high-frequency coils and lead to higher SNR in MR measurements. This work experimentally explores the added value of such a litz wire using equivalent solenoid coils in the range of 1 to 61 MHz. An improvement could be measured up to a frequency of 15 MHz, whereas the maximum effectiveness of the investigated wire was at 3 MHz. In addition, the SNR gain was validated in agreement on an 0.26 T MR system by comparing 1H FID signals.
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