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Field-free line (FFL) Magnetic Particle Imaging (MPI) scanners are of high interest for fast and accurate scanning of 3D samples because of the higher signal-to-noise ratio due to the enlarged encoding scheme. Until now, only magnetic field generators have been presented providing an electrical rotation and displacement of an FFL within a 2D slice. Utilizing double-helix coils and the Traveling Wave approach, a full 3D FFL MPI scanner can be introduced, providing fast 3D imaging with less hardware efforts.