Magnetic resonance imaging Magnetic coils Magnetic coils that A radiofrequency coil that produce a produce a static field spe head or other bap. ed for (C) Diagram of the machine used to obtain clinical MR static magnetic perpendicular to the the he images. Additional magnetic coils (not shown) Produce lin field in the long iong axis part(not shown) perturbs early varying magnetic field gradients oriented along three axis of the patient the static fields to generate orthogonal axes. (D)An MR image taken in the midsagittal an MRI plane. Note the extraordinary clarity with which all major brain components can be seen (compare with Figure 1.10)Magnetic resonance imaging