Waveguide antenna device for generating or receiving a radiofrequency signal within an MRI-bore of an MRI-system, and an MRI-system provided with a waveguide antenna device.

摘要

The present invention relates to a waveguide antenna device for generating and/or receiving a radiofrequency signal within an MRI-bore of an MRI-system. The waveguide antenna device comprising a waveguide having an axial direction and comprising a dielectric material, the waveguide being configured to direct the radiofrequency signal towards an area of interest in front of the waveguide. The waveguide antenna device further comprises an antenna, which antenna is configured to generate a RF signal within the waveguide. The waveguide and antenna are disposed to emit a single mode radiofrequency signal in the axial direction of the waveguide.