1
Christopher Allen Nafis, Timothy Patrick Kelliher, William Edward Lorensen, Harvey Ellis Cline, David Egidio Altobelli, Ron Kikinis, Robert David Darrow, Charles Lucian Dumoulin: Computer graphic and live video system for enhancing visualization of body structures during surgery. General Electric Company, Lawrence P Zale, Marvin Snyder, April 21, 1998: US05740802 (271 worldwide citation)

An interactive surgery planning and display system mixes live video of external surfaces of the patient with interactive computer generated models of internal anatomy obtained from medical diagnostic imaging data of the patient. The computer images and the live video are coordinated and displayed to ...


2
Robert David Darrow, Charles Lucian Dumoulin, Steven Peter Souza: Imaging of interventional devices in a non-stationary subject. General Electric Company, Lawrence P Zale, Marvin Snyder, March 24, 1998: US05730129 (222 worldwide citation)

A tracking system monitors the position of a device within a subject and superimposes a graphic symbol on a diagnostic image of the subject. Registration of the tracked location with the diagnostic image is maintained in the presence of subject motion by monitoring subject motion and adjusting the d ...


3
Ronald Dean Watkins, Charles Lucian Dumoulin: Magnetic resonance devices suitable for both tracking and imaging. General Electric Company, Lawrence P Zale, Marvin Snyder, February 10, 1998: US05715822 (188 worldwide citation)

A novel RF coil attached to an invasive device, such as a catheter, is used to detect magnetic resonance (MR) signals for monitoring the position of the device within a subject and for the acquisition of high-resolution magnetic resonance images of the tissue surrounding the device. The novel coil i ...


4
Charles Lucian Dumoulin, Robert David Darrow: MRI guided ablation system. General Electric Company, Jean K Testa, Donald S Ingraham, June 12, 2001: US06246896 (136 worldwide citation)

An MRI system acquires NMR tracking data from a tracking coil imbedded in an ablation device which is guided by a physician using real time anatomic images produced from image data acquired by the MRI system. The same tracking coil is energized by an RF power source to deliver energy which ablates t ...


5
Charles Lucian Dumoulin, Richard Philip Mallozzi, Robert David Darrow, Harvey Ellis Cline, Renee Ann Guhde: System and method for interventional procedures using MRI. General Electric Company, Joseph J Christian, May 25, 2010: US07725157 (70 worldwide citation)

An imaging and interventional system and methods are provided. The system comprises an imaging device for acquiring volumetric image data for an anatomical region of interest, a catheter for acquiring electrophysiological (EP) measurements of the anatomical region of interest, the catheter having at ...


6
Charles Lucian Dumoulin, Kenneth William Rohling, Ronald Dean Watkins, Randy Otto John Giaquinto: Patient electrical isolation system. General Electrical Company, Lawrence P Zale, Marvin Snyder, September 15, 1998: US05807253 (64 worldwide citation)

A patient isolation device is used as a safety device to provide electrical insulation between medical electronic equipment and portions of the equipment which come in contact with the patient. In one implementation of the patient isolation device, an RF coil is incorporated in a catheter connected ...


7
Charles Lucian Dumoulin, Robert David Darrow, Ronald Dean Watkins: Luminal diagnostics employing spectral analysis. General Electric Company, Jean K Testa, Donald S Ingraham, October 10, 2000: US06129667 (55 worldwide citation)

An invasive probe for determining the morphological characteristics of walls of a lumen employs a real-time tracking means and an optical spectral measurement means. As the probe is advanced within the lumen, the real-time tracking means provides three-dimensional coordinates of the probe's position ...


8
Charles Lucian Dumoulin, Robert David Darrow: High speed tracking of interventional devices using an MRI system. General Electric Company, Jean K Testa, Donald S Ingraham, September 11, 2001: US06289233 (54 worldwide citation)

An MRI system acquires NMR tracking data from a tracking coil imbedded in a medical device which is guided by a physician using real time anatomic images produced from image data acquired by the MRI system. A Hadamard magnetic resonance tracking sequence is used to update the tracking coil location ...


9
Charles Lucian Dumoulin: Error compensation for device tracking systems employing electromagnetic fields. General Electric Company, Jean K Testa, Marvin Snyder, March 13, 2001: US06201987 (48 worldwide citation)

The present invention is capable of more accurately tracking an invasive device in a subject's body in the presence of eddy current inducing structures. Current patterns applied to the tracking system's transmit coils are modified to compensate for the effect of the eddy currents. The curr ...


10
Robert David Darrow, Charles Lucian Dumoulin, Steven Peter Souza: Imaging of interventional devices during medical procedures. General Electric Company, Lawrence P Zale, Marvin Snyder, September 30, 1997: US05671739 (35 worldwide citation)

A tracking system monitors the position of a device within a subject and superimposes a graphic symbol on a diagnostic image of the subject. Registration of the tracked location with the diagnostic image is maintained in the presence of subject motion by monitoring subject motion and adjusting the d ...