Patent ID: 7873412
Filing Date: 2011-01-18
Classification: A61B,A61N,G01R

Abstract:
1. A measurement system for measuring induced current in an implantable medical device undergoing magnetic resonance imaging, the measurement system comprising: (i) a resistor connected in series with a conductive loop of the implantable medical device, wherein the conductive loop comprises a pulse generator and a lead; (ii) electronic circuitry configured to generate an electronic signal representative of a voltage differential across the resistor and to generate an optical signal corresponding to the electronic signal; (iii) an area shielded from magnetic fields generated by magnetic resonance imaging defined by a magnetic shielding wall; and (iv) a fiber optic cable configured to transmit the optical signal away from an area subject to magnetic resonance imaging, the fiber optic cable configured to transmit the optical signal to the area shielded from magnetic fields generated by magnetic resonance imaging.