Endoscopically compatible MR-safe magneto-inductive imaging catheter

Endoscopic compatibility of a catheter-based RF receiver for magnetic resonance imaging (MRI) is demonstrated. The receiver is based on a self-terminating magneto-inductive waveguide, constructed as a thin-film circuit and attached to a catheter scaffold using heat-shrink tubing. Segmentation and the use of twisted, figure-of-eight-shaped elements provide intrinsic protection against transmitter B₁ and E fields, respectively. ¹H MRI and simulated magnetic resonance cholangiopancreatography are demonstrated in a 1.5 T magnetic field.