We show the first 3D in-vivo images acquired from our custom-built 50 mT low-cost Halbach based portable MRI scanner. 3D Images of a knee were acquired with a ~2 mm isotropic resolution using a 3D turbo spin echo sequence in less than 12 minutes. Gradient non-linearity induced image distortions are minimal within the central ~10 cm of the magnet bore length, but require correction beyond this point. These results represent the latest step towards our goal of creating a fully portable MRI scanner targeting pediatric neuroimaging in the developing world for less than 30 000 euros.
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