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John Frederick Schenck, Ronald Dean Watkins, William Alan Edelstein, Sayed Amr El Hamamsy, Eddy B Boskamp, Randy Otto John Giaquinto, John Andrew Mallick: Radio frequency coil for open magnetic resonance imaging system. General Electric Company, Jean K Testa, Jill M Breedlove, August 20, 2002: US06437567 (134 worldwide citation)

A quadrature coil suitable for use with an open frame MRI system provides crossing pairs of arrays of parallel conductor elements, respectively. Compact configuration is provided through use of an isolating circuit for incorporating parasitic capacitances at the resonance frequency of the coil into ...


2
William Alan Edelstein, Richard Philip Mallozzi, Robert Arvin Hedeen, Sayed Amr El Hamamsy, Mark Lloyd Miller, Paul Shadforth Thompson, Robert Adolph Ackermann, Bruce Campbell Amm, John Peter Fura, Mike James Radziun, David Edward Dean, Scott Thomas Mansell, Dewain Anthony Purgill, Robert Michael Vavrek: Low noise MRI scanner. General Electric Company, Jean K Testa, Jill M Breedlove, August 20, 2002: US06437568 (31 worldwide citation)

A low noise imaging apparatus for producing Magnetic Resonance (MR) images of a subject and for substantially minimizing acoustic noise generated during imaging is provided. The imaging apparatus comprises a magnet assembly, a gradient coil assembly, and a rf coil assembly, wherein at least one of t ...


3
Frederic Ghislain Pla, Robert Arvin Hedeen, Robert James Dobberstein, Thomas Gerard Ebben, Scott Thomas Mansell, Kemakolam Michael Obasih, Michael James Radziun, Peter Ping Liang Sue, William Alan Edelstein: Low noise MRI scanner. General Electric Company, Douglas E Erickson, Marvin Snyder, August 11, 1998: US05793210 (29 worldwide citation)

A magnetic-resonance-imaging (MRI) scanner subassembly. In one subassembly, a preferably annularly-cylindrical-shaped enclosure contains a first vacuum, and an MRI gradient coil assembly is located within the enclosure in the first vacuum. Preferably, an annularly-cylindrical housing is included whi ...


4
Icko Eric Timothy Iben, William Alan Edelstein, Richard Blair Sheldon, Scott Robert Blaha, William Bennett Silverstein, Carl Richard Scatena, Gary Roland Brown: Thermal heating blanket in-situ thermal desorption for remediation of hydrocarbon-contaminated soil. General Electric Company, James Magee Jr, October 7, 1997: US05674424 (27 worldwide citation)

An in-situ thermal desorption system which combines thermal desorption and vacuum extraction to separate organic compounds from in place contaminated soils is disclosed. A "heating blanket" desorption unit is applied directly to the surface of the hydrocarbon contaminated soil. The heating blanket a ...


5
Robert Arvin Hedeen, William Alan Edelstein, Sayed Amr El Hamamsy, Kenneth Gordon Herd, Robert Adolph Ackermann: MRI magnet assembly with non-conductive inner wall. General Electric Company, Marvin Snyder, Douglas E Stoner, December 5, 2000: US06157276 (24 worldwide citation)

An MR magnet assembly includes a cylindrical vessel for housing a superconducting magnet and having a vacuum between its inner and outer walls. The vessel defines a magnet bore for receiving a patient to be imaged. A gradient coil assembly is mounted in the bore adjacent the inner wall of the magnet ...


6
Charles Lucien Dumoulin, Ronald Dean Watkins, Icko Eric Timothy Iben, Sayed Amr Ahmes El Hamamsy, William Alan Edelstein: Method to automatically tune MRI RF coils. General Electric Company, Jean K Testa, Donald S Ingraham, April 25, 2000: US06054858 (18 worldwide citation)

A sweep generator 230 applies a range of frequencies to an rf coil 140 to detect the resonant frequency of a field generated by a magnet 125a,b. A frequency to current converter 220 applies an auxiliary magnetic field to tune an MRI apparatus to the resonant frequency of the rf coil. A flexible coil ...


7
William Alan Edelstein, Robert Arvin Hedeen, Anthony Mantone: Filler material for magnet resonant system self-shielded gradient coil assemblies. General Electric Company, Jean K Testa, Donald S Ingraham, August 27, 2002: US06441614 (16 worldwide citation)

A self-shielded gradient coil assembly for an MR imaging system has inner and outer gradient coil windings disposed in coaxial relationship and defining a hollow annular space therebetween. Inner and outer helical cooling tubes are affixed to the outer and inner surfaces of the inner and outer gradi ...


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Charles Lucian Dumoulin, Philip Trefor Jones, William Alan Edelstein, Benjamin Assif, Nissim Ben Hamo, David Keren: Rotating body coil apparatus for interventional magnetic resonance imaging. General Electric Company, Imperial College of Science and Medicine, Jean K Testa, Donald S Ingraham, October 15, 2002: US06466018 (8 worldwide citation)

A rotating body coil assembly for use with an open MR magnet for imaging at least a portion of a subject comprises a resonant structure configured to rotate about the subject and to permit access to the subject during imaging. The body coil assembly comprises first and second end ring assemblies pos ...


10
Andrew Phillip Shapiro, Jerome Johnson Tiemann, William Alan Edelstein: Methods and apparatus for detecting ice readiness. General Electric Company, Jill M Breedlove, Christian G Cabou, November 6, 2001: US06311503 (3 worldwide citation)

Accurate sensing of ice readiness in an ice maker is accomplished using, as an ice readiness sensor, a capacitance bridge circuit having a first capacitor connected as a first bridge arm a second capacitor connected as a second bridge arm, a tunable capacitor connected as a third bridge arm and a pr ...