Patent ID: 6930482
Filing Date: 2005-08-16
Classification: G01R

Abstract:
1. A time-variable magnetic fields generator for a magnetic resonance apparatus comprising: a gradient coil formed by conductors adapted to be disposed at a subject-receiving, hollow opening of a magnetic resonance apparatus, said hollow opening having an axial extent and said gradient coil being free of said conductors at an axial middle region of said hollow opening; a radio-frequency antenna element for emitting a radio-frequency field, adapted to be disposed in said middle region; a first radio-frequency shield enclosing said conductors at a first side of said middle region; a second radio-frequency shield enclosing said conductors at a second, opposite side of said middle region; a third radio-frequency shield proceeding radially around an exterior of said radio-frequency antenna element; and said first, second and third radio-frequency shields delimiting a field return space for return of said radio-frequency field.