Arrangement for magnetic resonance signal optical transmission has electrooptical modulator material between crossed polarizers so light extinguished if no voltage induced in coil

摘要

The arrangement passes light from a light source to an electrooptical modulator fiber optically, modulating the light with a voltage induced in the magnet resonance reception coil (6) and passing it to the detection unit. The electrooptical material (4) of the modulator is arranged between two crossed polarizers (3,5) so that the light of the light source is extinguished from the modulator in the absence of a voltage induced in the coil. Independent claims are also included for the following: an intravascular catheter with a magnetic resonance reception coil on the distal end and a magnetic resonance device.