MODELLING AND OPTIMIZATION OF THE MAGNETIC CIRCUIT OF A MOBILE NUCLEAR MAGNETIC RESONANCE DEVICE EOR MAGNETIC RESONANCE IMAGING

摘要

Magnetic resonance imaging, commonly known as MRI, is a powerful noninvasive imaging technique in clinical practice and material science. Unlike x-ray based computed tomography (CT) MRI doesn't use ionizing radiation and hence is considered safe. The resolution of MR[ basically depends on the homogeneity and field strength of the primary magnetic field B{sub}0 over the volume of interest. In clinical tomographs homogeneous fields are produced by solenoid coil windings with high current excitation.