Patent ID: 7761132

Claim:
A local endo coil for intracorporeal placement, for recording magnetic resonance signals, which can be deployed and unfolded for the purpose of receiving signals, comprising: an outer balloon having an interior and a first feeder; a coil conductor in the interior of said outer balloon; at least one liquid or gel filling the interior of the outer balloon via the first feeder, including an area between the coil conductor and the outer balloon, the at least one liquid or gel having a first dielectric constant greater than one in order to reduce the thermal loading of tissue in an area of the local endo coil; and a deployable structure disposed inside the outer balloon and having a second feeder, the deployable structure supporting the coil conductor on an outer surface thereof and being filled via the second feeder with a medium different from the at least one liquid or gel, the medium having a second dielectric constant greater than the first dielectric constant.