Selective actuation and MPI of magnetic beads

Anna C. Bakenecker, Klaas Bente, Felix Bachmann, Anselm von Gladiss, Damien Faivre, Thorsten M. Buzug


Magnetic beads can serve as drug carries or agents for hyperthermia. For a precise treatment, the magnetic beads need to be steered towards their targeted position. Magnetic objects can be moved by either a magnetic gradient field or by a homogeneous magnetic field with a rotating field vector. Both, a gradient field and a homogeneous field, act on all magnetic objects similarly and therefore a selection between various objects is not possible. Here we show a selective actuation of magnetic beads by superimposing a gradient field with a rotating homogeneous field. With the selection field, forming a field free point, and the focus field with rotating field vector of an MPI scanner, selective actuation is performed. Since tomographic imaging is essential for the real-time tracking of the actuation process, we demonstrate the feasibility to visualize the magnetic beads with MPI before and after actuation.
Original languageEnglish
JournalInternational Workshop on Magnetic Particle Imaging
Issue number2 Suppl 1
Publication statusPublished - 02.09.2020


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