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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Computational Materials Discovery and Optimization
Presentation Title Design Concepts of Optimized MRI Magnet by COMSOL Multiphysics Simulation
Author(s) Akash Oraon, Sudipto Ghosh, Shampa Aich, Gautam Sinha
On-Site Speaker (Planned) Akash Oraon
Abstract Scope The emphasis of this work is on the optimal design of Magnetic Resonance Imaging (MRI) magnets modified with asymmetric electromagnetic coils and iron shell. The optimum geometrical arrangement of asymmetrical electromagnets in MRI is obtained by COMSOL Multiphysics using a gradient-based optimization solver. The work aims at achieving the required field homogeneity with a shorter magnet having a minimum amount of ampere turns which reduce the current density. The optimized design converged solution gives the total inductance of the set of coils, total conductor length, force and maximum field on each coil. The optimization solver also calculates the allowable geometrical tolerance to achieve the field uniformity. The optimization technique is flexible and can be used for various geometries. The symmetric coils provide field uniformity 1.5 T within a sphere of 50 cm diameter at the central zone of the geometry.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


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