A Robust guideline to design a split gradient coil for a hybrid Linac-MRI scanner

This study aims to present a robust guideline to design a 500 mm transversal and 620 mm axial gap split x-gradient coil to be installed in a hybrid Linac-MRI scanner. The methodology is divided in two parts: selection of the optimal shielding strategy (this work) and torque/force balancing. Four shielding approaches are studied in order to determine the most suitable for torque balancing and high coil performance. We found that coils designed using the minimizations of the magnetic energy in the whole system are the most suitable for torque/force balancing, optimal pre-emphasis, high slew rate and lower power loss.

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