Root / CYBERNETICS AND PHYSICS / Volume 15, 2026, Number 2 / Formation of a homogeneous field in low-field PM-based MRI device

Formation of a homogeneous field in low-field PM-based MRI device

Nadezhda Krylova, Nikolay Shatil, Sergey Sytchevsky, Vladimir Kukhtin, Victor Amoskov, Victor Kazantsev, Nikolay Edamenko, Carlos Cabal Mirabal, Anna Hurskainen, Anna Dyatlovich, Aleksandr Fedotov

A method to optimize the magnet system for a 70mT salient-pole open MRI device is presented which is based on FEM simulations. The proposed method gives near tenfold reduction in the shim mass and offers more efficient solution the compared to the conventional passive shimming techniques. For an H-shaped magnetic circuit the desired field homogeneity of 137 ppm in 240 mm diameter spherical volume can be achieved through 2-3 iterations.
CYBERNETICS AND PHYSICS, VOL. 15, NO. 2, 2026, 177–182
https://doi.org/10.35470/2226-4116-2026-15-2-177-182

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