Rotation unit for permanent magnet based MPI devices

For the utilization of the magnetic field of rotating Halbach cylinders in MPI scanners, a rotation unit is required which houses the used permanent magnets and allows their rotation. The setup proposed here allows the concentric arrangement and individual rotation of four Halbach cylinders, whose purely mechanic agitation allows the movement of the field-free region through the field of view. Based on the requirements for such a rotation system, basic design approaches are presented and compared. Initial strength calculations and further simulations were performed on the resulting constructive concept, which, upon implementation, forms the basis for almost purely mechanical MPI scanners.

DDC Class

004: Informatik

610: Medizin

More Funding Information

Research funding: The authors thankfully acknowledge the financial support by the German Research Foundation (DFG GR 5287/2-1) The Fraunhofer IMTE is supported by the EU (EFRE) and the State Schleswig-Holstein, Germany (Project: IMTE – Grant: 124 20 002 /
LPW-E1.1.1/1536.

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https://creativecommons.org/licenses/by/4.0/

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456-Article Text-2173-1-10-20220320.pdf

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Rotation unit for permanent magnet based MPI devices