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Magnetic particle imaging is a promising medical imaging technique. Applyingchanging magnetic fields to tracer material injected into the object underinvestigation results in a change in magnetization. Measurement of relatedinduced voltage signals enables reconstruction of the particle distribution.For the field-free line scanner the scanning geometry is similar to the one incomputerized tomography. We make use of these similarities to derive a forwardmodel for dynamic particle concentrations. We validate our theoretical findingsfor synthetic data. By utilizing information about the object's dynamics interms of a diffeomorphic motion model, we are able to jointly reconstruct theparticle concentration and the corresponding dynamic Radon data without or withreduced motion artifacts. Thereby, we apply total variation regularization forthe concentration and an optional sparsity constraint on the Radon data.

Field-free Line Magnetic Particle Imaging: Radon-based Artifact Reduction with Motion Models