Patents by Inventor Frederick Schenck
Frederick Schenck has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9349186Abstract: The system and method of the invention combines target image intensity into a maximum likelihood estimate (MLE) framework as in STAPLE to take advantage of both intensity-based segmentation and statistical label fusion based on atlas consensus and performance level, abbreviated iSTAPLE. The MLE framework is then solved using a modified expectation-maximization algorithm to simultaneously estimate the intensity profiles of structures of interest as well as the true segmentation and atlas performance level. The iSTAPLE greatly extends the use of atlases such that the target image need not have the same image contrast and intensity range as the atlas images.Type: GrantFiled: February 11, 2014Date of Patent: May 24, 2016Assignee: General Electric CompanyInventors: Xiaofeng Liu, John Frederick Schenck, Ek Tsoon Tan, Albert Amos Montillo
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Publication number: 20160054410Abstract: In embodiments of the invention, the habenulae have been identified and localized in normal volunteers. Aspects of the invention determine the location, volume and magnetic susceptibility of the habenulae. Furthermore, diagnosing and monitoring patient disorders are enabled using the herein disclosed methodologies and techniques.Type: ApplicationFiled: August 14, 2015Publication date: February 25, 2016Inventors: John Frederick Schenck, Ek Tsoon Tan, Dominic Michael Graziani, Suresh Emmanuel Devadoss Joel
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Publication number: 20140226889Abstract: The system and method of the invention combines target image intensity into a maximum likelihood estimate (MLE) framework as in STAPLE to take advantage of both intensity-based segmentation and statistical label fusion based on atlas consensus and performance level, abbreviated iSTAPLE. The MLE framework is then solved using a modified expectation-maximization algorithm to simultaneously estimate the intensity profiles of structures of interest as well as the true segmentation and atlas performance level. The iSTAPLE greatly extends the use of atlases such that the target image need not have the same image contrast and intensity range as the atlas images.Type: ApplicationFiled: February 11, 2014Publication date: August 14, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Xiaofeng Liu, John Frederick Schenck, Ek Tsoon Tan, Albert Amos Montillo
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Patent number: 6982552Abstract: Methods and apparatus for fabricating a magnetic resonance imaging (MRI) gradient coil for generating magnetic field gradients are provided. The method includes determining a pattern of gradient current paths on a surface using a set of stream functions oriented in at least one of a z-gradient, a y-gradient; and an x-gradient, and arranging conductive material to define a current path that conforms to the determined gradient current paths.Type: GrantFiled: May 27, 2003Date of Patent: January 3, 2006Assignee: General Electric CompanyInventors: Christopher Judson Hardy, John Frederick Schenck, William Daniel Barber, Cornelius Jan Von Morze
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Publication number: 20040239325Abstract: Methods and apparatus for fabricating a magnetic resonance imaging (MRI) gradient coil for generating magnetic field gradients are provided. The method includes determining a pattern of gradient current paths on a surface using a set of stream functions oriented in at least one of a z-gradient, a y-gradient; and an x-gradient, and arranging conductive material to define a current path that conforms to the determined gradient current paths.Type: ApplicationFiled: May 27, 2003Publication date: December 2, 2004Inventors: Christopher Judson Hardy, John Frederick Schenck, William Daniel Barber, Cornelius Jan Von Morze
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Patent number: 6822448Abstract: A radio frequency (RF) coil assembly for a very high field Magnetic Resonance Imaging (MRI) system is provided comprising a plurality of conductors arranged cylindrically and disposed about a cylindrical patient bore tube of the MRI system and a plurality of capacitive elements for electrically interconnecting the plurality of conductors at respective ends of the conductors. The conductors have a width selected for the RF coil assembly to resonate at substantially high frequencies. A very high field Magnetic Resonance Imaging (MRI) system is provided that comprises a RF coil assembly adapted to resonate at substantially high frequencies, a RF coil shield assembly and a plurality of RF drive power cables.Type: GrantFiled: April 20, 2001Date of Patent: November 23, 2004Assignee: General Electric CompanyInventors: Ronald Dean Watkins, John Frederick Schenck
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Publication number: 20040102692Abstract: A method and system for detecting iron using magnetic resonance imaging (MRI) is provided. The method comprises acquiring magnetic resonance (MR) images by a selected pulse sequence to enhance brain iron deposits using a MRI system having a substantially high magnetic field strength and characterizing regions of interest within the MR images having statistically relevant quantities of iron deposits to indicate a given disease.Type: ApplicationFiled: November 27, 2002Publication date: May 27, 2004Applicant: General Electric CompanyInventors: John Frederick Schenck, Abdalmajeid Musa Alyassin, Harvey Ellis Cline, William Edward Lorensen, David Charles Alsop
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Publication number: 20030071621Abstract: A radio frequency (RF) coil assembly for a very high field Magnetic Resonance Imaging (MRI) system is provided. The RF coil assembly comprises a plurality of conductors arranged cylindrically and disposed about a patient bore tube of the MRI system. Each of the conductors is configured for the RF coil assembly to resonate at substantially high frequencies. Further, the RF coil assembly comprises a plurality of capacitive elements disposed between and connecting respective ends of the conductors and further disposed in a spaced-apart relationship with the patient bore tube. The capacitive elements are for electrically interconnecting the plurality of conductors at the respective ends of the conductors.Type: ApplicationFiled: October 12, 2001Publication date: April 17, 2003Inventors: Ronald Dean Watkins, John Frederick Schenck, Randy Otto John Giaquinto
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Patent number: 6538441Abstract: A radio frequency (RF) coil assembly for a very high field Magnetic Resonance Imaging (MRI) system is provided. The RF coil assembly comprises a plurality of conductors arranged cylindrically and disposed about a patient bore tube of the MRI system. Each of the conductors is configured for the RF coil assembly to resonate at substantially high frequencies. Further, the RF coil assembly comprises a plurality of capacitive elements disposed between and connecting respective ends of the conductors and further disposed in a spaced-apart relationship with the patient bore tube. The capacitive elements are for electrically interconnecting the plurality of conductors at the respective ends of the conductors.Type: GrantFiled: October 12, 2001Date of Patent: March 25, 2003Assignee: General Electric CompanyInventors: Ronald Dean Watkins, John Frederick Schenck, Randy Otto John Giaquinto
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Publication number: 20020153893Abstract: A radio frequency (RF) coil assembly for a very high field Magnetic Resonance Imaging (MRI) system is provided comprising a plurality of conductors arranged cylindrically and disposed about a cylindrical patient bore tube of the MRI system and a plurality of capacitive elements for electrically interconnecting the plurality of conductors at respective ends of the conductors. The conductors have a width selected for the RF coil assembly to resonate at substantially high frequencies. A very high field Magnetic Resonance Imaging (MRI) system is provided that comprises a RF coil assembly adapted to resonate at substantially high frequencies, a RF coil shield assembly and a plurality of RF drive power cables.Type: ApplicationFiled: April 20, 2001Publication date: October 24, 2002Applicant: General Electric CompanyInventors: Ronald Dean Watkins, John Frederick Schenck
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Patent number: 6437567Abstract: 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 a blocking parallel resonance. Termination of the parallel conductor elements may be accomplished by equal impedance node connectors formed from branching pairs of conductors or a triangular least resistance connection form. RF shields are provided by pairs of conductive sheets containing eddy current reducing slots aligned with the parallel conductors elements of the coil.Type: GrantFiled: December 6, 1999Date of Patent: August 20, 2002Assignee: General Electric CompanyInventors: John Frederick Schenck, Ronald Dean Watkins, William Alan Edelstein, Sayed-Amr El-Hamamsy, Eddy B. Boskamp, Randy Otto John Giaquinto, John Andrew Mallick
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Patent number: 5705014Abstract: Instruments are constructed of a carbon fiber material optionally doped with a doping agent such as iron oxide, the instrument having a magnetic susceptibility being adjusted to a portion of a subject being imaged. Therefore there is little effect upon the lines of magnetic flux and the magnetic field homogeneity, reducing distortion in an MR image. These carbon fiber instruments exhibit virtually no magnetic torsional forces when inserted into a magnetic field. This is important, for example when the instrument is a scalpel. Doped carbon fiber has minimal affect on radiofrequency fields. The instruments do not affect the homogeneity of an applied homogeneous magnetic field or an applied radiofrequency field. Doped carbon fiber exhibits a rigidity large enough to allow construction of high strength instruments such as biopsy needles. It also has the ability to retain a sharp edge, allowing construction of scalpels and cutting instruments.Type: GrantFiled: March 22, 1996Date of Patent: January 6, 1998Assignee: General Electric CompanyInventors: John Frederick Schenck, Kenneth William Rohling
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Patent number: 4840700Abstract: Etching methods are employed on a thin conducting sheet so as to fabricate complicated magnetic coil patterns which are necessary to produce magnetic fields of high uniformity or other given design. The etching is performed so that material is removed along a thin line or lines which correspond to current streamlines of the ideal current distribution so that the remaining material exhibits a relatively wide region of conducting material having reduced electrical resistance.Type: GrantFiled: July 13, 1987Date of Patent: June 20, 1989Assignee: General Electric CompanyInventors: William A. Edelstein, Frederick Schenck