Patent ID: 8532742

Claim:
A method of performing an interventional procedure using a magnetic resonance imaging system, the method comprising: moving an elongate multi-mode medical device adapted for insertion into a body toward a target area of the body, the multi-mode medical device providing an end within the body having a tracking coil electrically in series with a visualization coil, the tracking coil having more turns than the visualization coil, both the tracking coil and visualization coil are radiofrequency coils tuned to the Larmor frequency of hydrogen protons of the body when the body is placed in a predetermined external magnetic field of the magnetic resonance imaging system; applying a pulse sequence using the magnetic resonance system and acquiring a set of radial projection data from an unmultiplexed combined signal of the series connected tracking and visualization coil of the multi-mode medical device, each projection providing samples along a different line through a common point of k-space at a projection angle; wherein the tracking coil is adapted to provide a localized spatial sensitivity substantially greater than a sensitivity of the visualization coil in a comparable spatial region, and wherein the tracking coil produces a sharp peak in a Fourier transformation of the unmultiplexed combined signal distinguishable from the signal from the visualization coil; transmitting the unmultiplexed combined signal along a single conductor pair to an end of the multimode medical device outside the body; using the signal from the visualization coil to generate an image of a large-field-of-view based the set of radial projection data; and using the signal from the tracking coil to track a position of the multi-mode medical device within the image of large-field-of-view.