05445150 is referenced by 222 patents and cites 13 patents.

An invasive imaging system employs a self-contained RF transmitter attached to an invasive device which allows tracking of the invasive device within a subject without physical connections to a tracking/display system and without the use of ionizing rays. An imaging system obtains a medical diagnostic image of the subject. The self-contained RF transmitter is comprised of a power generator, a power conversion means such as an oscillator which converts the generated power to a radiofrequency (RF) signal, and a broadcasting means such as a tuned transmit coil for radiating the RF signal. The radiated RF signal is received by receive coils of a tracking/display means which calculates the location of the RF transmitter. The tracking/display means displays the medical diagnostic image on a monitor and superimposes a symbol on the image at a position corresponding to the calculated location of the RF transmitter. Prior to operation, the power generator may be energized inductively, photo-voltaically, or by direct contact with either an external power supply. The power generator may also be a charged battery sealed inside the RF transmitter. The RF transmitter may be implanted to track the motion of internal tissues.

Title
Invasive system employing a radiofrequency tracking system
Application Number
793962
Publication Number
5445150
Application Date
January 29, 1993
Publication Date
August 29, 1995
Inventor
Robert D Darrow
Scotia
NY, US
Charles L Dumoulin
Ballston Lake
NY, US
Agent
Marvin Snyder
Lawrence P Zale
Assignee
General Electric Company
NY, US
IPC
A61B 5/00
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