Mathias Gabriel Lambert1,2,3, Cristian Tejos1,2,3, and Carlos Milovic4
1Department of Electrical Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile, 2Biomedical Imaging Center, Pontificia Universidad Católica de Chile, Santiago, Chile, 3Millennium Nucleus for Cardiovascular Magnetic Resonance, Santiago, Chile, 4Department of Medical Physics and Biomedical Engineering, University College London, London, United Kingdom
1Department of Electrical Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile, 2Biomedical Imaging Center, Pontificia Universidad Católica de Chile, Santiago, Chile, 3Millennium Nucleus for Cardiovascular Magnetic Resonance, Santiago, Chile, 4Department of Medical Physics and Biomedical Engineering, University College London, London, United Kingdom
We present a novel, non-regularized and fast reconstruction method for QSM using a L1 norm functional, that is robust to noise and reduces streaking artifacts compared to the Nonlinear Dipole Inversion method. Simple to fine-tune, avoids time consuming parameter optimization tasks.
Figure 1: Optimal (RMSE-based) reconstructions of the COSMOS forward simulation.
Figure 3: Results in in-vivo data. The optimal number of iterations was selected by visually inspecting the result of each iteration.