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Abstract #1848

Use of a NURBS-Based, Full-Body Anatomy and FEA Model to Evaluate RF-Induced Heating during MR Imaging

Alan Leewood 1 , Sharath Gopal 1 , Kerim Genc 2 , Steve Cockram 3 , Philippe Young 3 , Jeff Crompton 4 , and Josh Thomas 4

1 MED Institute, Inc., West Lafayette, IN, United States, 2 Simpleware Ltd, VA, United States, 3 Simpleware Ltd, Devon, United Kingdom, 4 AltaSim Technologies, LLC, OH, United States

A full-body human anatomy and multiphysics finite element analysis (FEA) model is developed to evaluate RF-induced heating from MR imaging. The FEA approach provides a coupled transient thermal solution and incorporates high fidelity geometric features at minimal computational cost, thereby overcoming two significant limitations of the finite difference time domain (FDTD) method. Specific absorption rates (SAR) from the study are in good agreement with published results based on the FDTD method; maximum temperature occurs at a location that is consistent with previous simulation and experimental results. This work will be extended to add passive implants (e.g. stents and orthopedic devices) into the anatomy.

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