International Journal on Magnetic Particle Imaging IJMPI
Vol. 8 No. 1 Suppl 1 (2022): Int J Mag Part Imag

Proceedings Articles

Rotation Unit for Permanent Magnet Based MPI Devices

Main Article Content

Eric Aderhold (FRAUNHOFER RESEARCH INSTITUTION FORINDIVIDUALIZED AND CELL -BASED MEDICAL ENGINEERING), Tom Liebing , Anna C. Bakenecker , Thorsten M. Buzug , Tobias Knopp (Institute for Biomedical Imaging, Hamburg University of Technology, Hamburg, Germany), Matthias Graeser (Fraunhofer IMTE)


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.

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