Design procedure for permanent magnet assemblies with uniform magnetic fields for MRI devices

摘要

This paper shows that for magnetic resonance imaging (MRI) permanent magnet assemblies with the pronounced pole pieces, the investigation of magnetic field generated by one pole piece is a way to obtain an interrelation between pole piece diameter, magnet assembly air-gap length, and first and second shim dimensions. The investigation makes it possible to design optimum magnet assemblies.