Shumin Wang and Jeff H Duyn 2008 Phys. Med. Biol. 53 2677 doi:10.1088/0031-9155/53/10/016
Shumin Wang and Jeff H Duyn
Show affiliationsA hybrid method that combines the finite-difference time-domain (FDTD) method and the finite-element time-domain (FETD) method is presented for simulating radio-frequency (RF) coils in magnetic resonance imaging. This method applies a high-fidelity FETD method to RF coils, while the human body is modeled with a low-cost FDTD method. Since the FDTD and the FETD methods are applied simultaneously, the dynamic interaction between RF coils and the human body is fully accounted for. In order to simplify the treatment of the highly irregular FDTD/FETD interface, composite elements are proposed. Two examples are provided to demonstrate the validity and effectiveness of the hybrid method in high-field receive-and-transmit coil design. This approach is also applicable to general bio-electromagnetic simulations.
87.61.Tg Clinical applications
02.70.Dh Finite-element and Galerkin methods
Issue 10 (21 May 2008)
Received 12 November 2007, in final form 2 April 2008
Published 30 April 2008
Shumin Wang and Jeff H Duyn 2008 Phys. Med. Biol. 53 2677
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