| 摘要 |
<p>There are disclosed magnet arrays and methods for generating magnetic fields. In embodiments magnet arrays comprise a plurality of polyhedral magnets arranged in a lattice configuration and at least partly enclosing a testing volume, the magnet array having an associated magnetic field with a designated field direction, formula (I), wherein the magnetization direction, formule (II) of an individual polyhedral magnet located at a displacement vector, formule(III) from an origin point in the testing volume is determined by the, formula (IV). In embodiments the arrays are comprised in magnetic resonance machines. In embodiments the polyhedral magnets are truncated cubes or are rhombic dodecahedra.</p> |
