Rotation Unit for Permanent Magnet Based MPI Devices

Eric Aderhold*, Tom Liebing, Anna C. Bakenecker, Thorsten M. Buzug, Tobias Knopp, Matthias Graeser

*Corresponding author for this work


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.

Original languageEnglish
Article number2203066
JournalInternational Journal on Magnetic Particle Imaging
Issue number1
Publication statusPublished - 2022

Research Areas and Centers

  • Academic Focus: Biomedical Engineering


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