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Abstract #4333

Controlled E-peak field gradient coil

Hector Sanchez Lopez1,2, Luca Zilberti3, Oriano Bottauscio3, Mario Chiampi3,4, Xiaodong YANG2, and Yajie XU2

1ARKFIELD PTY LTD, Brisbane, Australia, 2Medical Imaging Department, Suzhou Institute of Biomedical Engineering and Technology (SIBET), Suzhou, People's Republic of China, 3Division of Metrology for Quality of Life, Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, Italy, 4Energia Department, Politecnico di Torino, Torino, Italy

This work presents a new shielding method capable to reduce E-peak field values by minimizing the infinite norm of the induced current density. The target volume (“organ”) is surrounded by a conductive surface “shell” where the infinite norm of the induced current density is minimized thereby producing a uniform distribution of the E-field inside the target volume and its surrounding. The method was effectively applied in the design of a whole body gradient coil with E-field control. E-field reduction larger than 10% are registered in a human phantom model. Further reductions in E-field is possible by compromising the coil performance.

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