Real-Time Full-Wave Simulations of RF Coils by Fast Integral Equation Methods

shumin wang¹, Jacco de Zwart¹, Jeff Duyn¹

A fast integral equation method is proposed for real-time patient-dependent simulations of high-field RF coils. This topology-based multi-level Crout method starts by partitioning a model into sub-domains and organizing them in a multi-level fashion. Based on the rank-deficient nature of the interactions between distant sub-domains, the Crout algorithm was applied to compress the corresponding matrix blocks. Numerical results were used to verify this method and to demonstrate its efficiency in real-time coil simulations. A promising application is per-patient specific absorption ratio (SAR) estimation.