Wan Luo1,2, Shao Ying Huang1, Jiasheng Su1, Zu-Hui Ma1, and J. Thomas Vaughan3
1Singapore University of Technology and Design, Singapore, Singapore, 2University of Electronic Science and Technology of China, Chengdu, China, People's Republic of, 3University of Minnesota, Minneapolis, MN, United States
When
B0 in a MRI system increases, peaks and nulls are formed in the energy/field
distribution inside the subject under scan, which causes safety issues and
deteriorates imaging accuracy, respectively. Therefore, a quick and accurate
electromagnetic simulation of the human body is crucial for predicting the
temperature and specific absorption rate distribution before a scan. Here, we
develop a solver based on the weak-form volume integral equation (VIE) and
accelerated by the fast Fourier transform method. It requires much less CPU
time and memory compared with the traditional strong-form VIE and the popular
FDTD-based commercial software SEMCAD.
