05318025 is referenced by 307 patents and cites 18 patents.

A tracking system employs magnetic resonance signals to monitor the position and orientation of at least one device such as a catheter within a subject. The device has a plurality of receiver coils which are sensitive to magnetic resonance signals generated in the subject. These signals are detected in the presence of magnetic field gradients and thus have frequencies which are substantially proportional to the location of the coil along the direction of the applied gradient. Signals are detected responsive to sequentially applied mutually orthogonal magnetic gradients to determine the device's position and orientation in several dimensions. The position and orientation of the device as determined by the tracking system is superimposed upon independently acquired medical diagnostic images. One or more devices can be simultaneously tracked.

Title
Tracking system to monitor the position and orientation of a device using multiplexed magnetic resonance detection
Application Number
7/861690
Publication Number
5318025
Application Date
April 1, 1992
Publication Date
June 7, 1994
Inventor
Robert D Darrow
Scotia
NY, US
Steven P Souza
Williamstown
MA, US
Charles L Dumoulin
Ballston Lake
NY, US
Agent
Marvin Snyder
Lawrence P Zale
Assignee
General Electric Company
NY, US
IPC
A61B 5/055
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