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Use of a NURBS-based, fully body anatomy and FEA model to evaluate RF-induced heating during MRI Imaging

Purpose:

  • Previous studies using computational methods to evaluate RF-induced heating during MR imaging focused on predicting specific absorption rate (SAR) using finite difference time-domain (FDTD) analysis.
  • A multiphysics-based finite element analysis (FEA) approach is presented, using a NURBS-based anatomical model developed from MR, CT and cryosectioned data.
  • Method incorporates geometric features with high fidelity at minimal computational expense and provides a coupled transient thermal solution.
  • SAR predictions from the FEA model are compared to published data. The sensitivity of temperature results to anatomical complexity is also explored.
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Use of a NURBS-based, fully body anatomy and FEA model to evaluate RF-induced heating during MRI Imaging

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