The coils of the production of additional fields in order to obtain, in a magnet having pole pieces for resonance imaging by magnetic resonance, polarization fields has a constant gradients

摘要

System of coils for the production of additional fields in a magnet having pole pieces 1, 2 to resonance imaging by magnetic resonance. / p & & p & it comprises: in the figures of the gradients dbzdx dbzdy gx, gy, two layers of orthogonal windings 1a, 2a, 1b, 2b, one on each pole piece; in the figures of the gradient gz dbzdz, two systems of windings 8, 9, 10, 13, 14 of the different circular about the axis oz, located on the internal faces facing the pole pieces and traversed by currents of opposite direction of a pole piece at the other.