Tracking system to monitor the position and orientation of a dev

Details Tracking system to monitor the position and orientation of a dev Tracking system to monitor the position and orientation of a dev

1992-04-01

1993-12-21

Cohen, Lee S.

Surgery

Truss

Pad

128653, 128658, 128899, A61B 5055

Patent

active

052714004

ABSTRACT:
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.

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