Work

Time-domain finite-difference/finite-element hybrid simulations of radio frequency coils in magnetic resonance imaging

Year: 2008

Type: article

Abstract: A 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.

Source: Physics in Medicine and Biology

DOI: 10.1088/0031-9155/53/10/016

Authors: Shumin Wang, Jeff H Duyn

Institutions: National Institutes of Health, National Institute of Neurological Disorders and Stroke

Language: English

Topic: Electromagnetic Simulation and Numerical Methods

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funders: National Institutes of Health, National Institute of Neurological Disorders and Stroke

OpenAlex ID: W2014108244

FWCI: 2.987

Cites: 27

Cited by: 17

Related to: 10