05271400 is referenced by 271 patents and cites 18 patents.

A tracking system employs magnetic resonance signals to monitor the position and orientation of a device, such as a catheter, within a subject. The device has an MR active sample and a receiver coil which is sensitive to magnetic resonance signals generated by the MR active sample. 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 in several dimensions. The position 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 magnetic resonance detection of a sample contained within the device
Application Number
7/861662
Publication Number
5271400
Application Date
April 1, 1992
Publication Date
December 21, 1993
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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