Patents by Inventor Ewald Weber

Ewald Weber 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).

  • Publication number: 20220142612
    Abstract: The invention provides for a method for switching between fields of view of an ultrasound probe. The method begins by obtaining an anatomical model representing a region of interest of a subject and establishing a first field of view relative to an ultrasonic probe, wherein the first field of view comprises an initial portion of the region of interest. Ultrasound data is then obtained from the first field of view by way of the ultrasonic probe and a first anatomical feature is identified within the first field of view based on the ultrasound data. A location in digital space of the first field of view relative to the anatomical model is determined based on the first anatomical feature. A second field of view is then established based on the anatomical model and the first field of view, wherein the first field of view functions as a reference field of view. The field of view is then switched from the first field of view to the second field of view.
    Type: Application
    Filed: March 13, 2020
    Publication date: May 12, 2022
    Inventors: FRANK MICHAEL WEBER, IRINA WAECHTER-STEHLE, TOBIAS WISSEL, ARNE EWALD, MATTHIAS LENGA, JOCHEN PETERS
  • Publication number: 20220128638
    Abstract: A magnet suitable for use in a Magnetic Resonance Imaging (MRI) system. The magnet includes a magnet body having a bore extending therethrough along an axis of the body and a primary coil structure having at least four primary coils positioned along the axis. A first end coil is adjacent a first end of the bore of the magnet and a second end coil is adjacent a second end of the magnet. The first end coil and the second end coil are spaced apart by no more than 1000 mm and an imaging region produced by the primary coils is of a disk-type.
    Type: Application
    Filed: November 22, 2019
    Publication date: April 28, 2022
    Inventors: Feng Liu, Riyu Wei, Ewald Weber
  • Patent number: 9977100
    Abstract: A coil arrangement for use in a magnetic resonance imaging system, the imaging system being for generating a magnetic imaging field in an imaging region, the coil arrangement including at least three coils for at least one of transmitting, receiving or transceiving an electromagnetic field, each coil being provided on a coil geometry and being substantially orthogonal.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: May 22, 2018
    Assignee: The University of Queensland
    Inventors: Stuart Crozier, Adnan Trakic, Ewald Weber, Bing Keong Li, Hua Wang
  • Patent number: 9429634
    Abstract: A coil for a magnetic resonance imaging device consists of multiple coil elements arranged about an imaging space. Each coil element comprise radiating structures oriented at an angle to a tangent of the imaging space. Angling the radiating structures reduces mutual coupling between coil elements and enhances the penetration of the radio frequency field to the imaging space.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: August 30, 2016
    Assignee: University of Queensland
    Inventors: Stuart Crozier, Bing Keong Li, Feng Liu, Ewald Weber
  • Publication number: 20150185298
    Abstract: The invention describes a method that provides a practical means of accurately estimating the electromagnetic fields and therefore the SAR (specific absorption rate) distributions of a subject in magnetic resonance imaging (MRI) scan. The disclosed method consists of several steps. If the coil information is unavailable during the patent imaging, the first step, generally performed before patient (or target) imaging, estimates the geometry of the radiofrequency (RF) coils. The second step estimates the patient-specific tissue volumes by deforming an appropriate reference with known tissue distribution from a database to the said target. Finally, the electromagnetic fields and the SAR distributions are calculated using numerical methods performed on the accurately estimated RF coils and patient-specific tissue volumes. The proposed method can be used for safe, accurate MR imaging at any magnetic field strengths, particular suitable for high-field applications.
    Type: Application
    Filed: June 5, 2013
    Publication date: July 2, 2015
    Inventors: Stuart Crozier, Ewald Weber, Jin Jin, Feng Liu
  • Patent number: 8754644
    Abstract: Apparatus for use in a magnetic resonance imaging system, the imaging system generating a magnetic imaging field in an imaging region (5), the apparatus including at least one coil for at least one of transmitting, receiving or transceiving an electromagnetic field, a field component (4) (such as a coil or a shield) and a drive (6) coupled to the field component for moving the field component (4) relative to the imaging region (5) to thereby modify the electromagnetic field during imaging process. The same concept can also be applied to nuclear imaging or nuclear spectroscopy apparatus.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: June 17, 2014
    Assignee: The University of Queensland
    Inventors: Adnan Trakic, Ewald Weber, Bing Keong Li, Stephen James Wilson, Wang Hua, Feng Liu, Stuart Crozier
  • Patent number: 8390287
    Abstract: A Magnetic Resonance Imaging (MRI) phased array head coil (10) comprises an array of coils (1, 2, 3, 4) a decoupling circuit (7) and a decoupling base (14). Counter wound inductors from adjoining coils (1, 2, 3, 4) in the decoupling circuit (7) are interlaced to achieve mutual decoupling between adjoining coils. Each separate coil (1, 2, 3, 4) includes a pair of spaced parallel main conductors (12) located on opposite sides of a cylindrical space (5) enclosed by the coils (1, 2, 3, 4). The decoupling base (14) comprises two meandering conductor bases (8, 9) which are interlaced. Orthogonal main conductors (12) of the coil (1, 2, 3, 4) share a common conductor base (8, 9). The multiple crossings of the paths of the conductor bases (8, 9) reduces mutual coupling effects.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: March 5, 2013
    Assignee: The University of Queensland
    Inventors: Stuart Crozier, Bing Keong Li, Ewald Weber
  • Publication number: 20120074935
    Abstract: A coil for a magnetic resonance imaging device consists of multiple coil elements arranged about an imaging space. Each coil element comprise radiating structures oriented at an angle to a tangent of the imaging space. Angling the radiating structures reduces mutual coupling between coil elements and enhances the penetration of the radio frequency field to the imaging space.
    Type: Application
    Filed: April 7, 2009
    Publication date: March 29, 2012
    Inventors: Stuart Crozier, Bing Keong Li, Feng Liu, Ewald Weber
  • Publication number: 20120068709
    Abstract: A coil arrangement for use in a magnetic resonance imaging system, the imaging system being for generating a magnetic imaging field in an imaging region, the coil arrangement including at least three coils for at least one of transmitting, receiving or transceiving an electromagnetic field, each coil being provided on a coil geometry and being substantially orthogonal.
    Type: Application
    Filed: March 30, 2010
    Publication date: March 22, 2012
    Inventors: Stuart Crozier, Adnan Trakic, Ewald Weber, Bing keong Li, Hua Wang
  • Publication number: 20110210735
    Abstract: Apparatus for use in a magnetic resonance imaging system, the imaging system generating a magnetic imaging field in an imaging region (5), the apparatus including at least one coil for at least one of transmitting, receiving or transceiving an electromagnetic field, a field component (4) (such as a coil or a shield) and a drive (6) coupled to the field component for moving the field component (4) relative to the imaging region (5) to thereby modify the electromagnetic field during imaging process. The same concept can also be applied to nuclear imaging or nuclear spectroscopy apparatus.
    Type: Application
    Filed: June 19, 2009
    Publication date: September 1, 2011
    Applicant: THE UNIVERSITY OF QUEENSLAND
    Inventors: Adnan Trakic, Ewald Weber, Bing Keong Li, Stephen James Wilson, Wang Hua, Feng Liu, Stuart Crozier
  • Publication number: 20100182009
    Abstract: A Magnetic Resonance Imaging (MRI) phased array head coil (10) comprises an array of coils (1, 2, 3, 4) a decoupling circuit (7) and a decoupling base (14). Counter wound inductors from adjoining coils (1, 2, 3, 4) in the decoupling circuit (7) are interlaced to achieve mutual decoupling between adjoining coils. Each separate coil (1, 2, 3, 4) includes a pair of spaced parallel main conductors (12) located on opposite sides of a cylindrical space (5) enclosed by the coils (1, 2, 3, 4). The decoupling base (14) comprises two meandering conductor bases (8, 9) which are interlaced. Orthogonal main conductors (12) of the coil (1, 2, 3, 4) share a common conductor base (8, 9). The multiple crossings of the paths of the conductor bases (8, 9) reduces mutual coupling effects.
    Type: Application
    Filed: March 26, 2008
    Publication date: July 22, 2010
    Applicant: The University of Queensland
    Inventors: Stuart Crozier, Bing Keong Li, Ewald Weber
  • Patent number: 3978624
    Abstract: Means for terminating the infeed of a machine tool, particularly a grinder. An electrode is imbedded within the tool and is exposed at the active surface thereof, such as the grinding surface of a grinder, and a sensing voltage is placed between said electrode and the workpiece. Suitable switching means is placed within the circuit of said electrode and workpiece which switching means will be activated upon the occurrence of a spark between said electrode and the workpiece. Activation of said switching means then activates further means to terminate the infeed of the tool. The circuitry supplying the voltage aforesaid may include a transformer having a plurality of output taps by which a plurality of voltages may be applied between the electrode and the workpiece and such circuitry will in such case include switching means automatically responsive to said different selected voltages.
    Type: Grant
    Filed: May 7, 1975
    Date of Patent: September 7, 1976
    Assignee: Werkzeugmaschinenfabrik Adolf Waldrich Coburg
    Inventors: Rudolf Merkel, Friedrich Schnell, Ewald Weber
  • Patent number: 3933178
    Abstract: A metering apparatus for liquids containing granular solids, in particular lapping liquid. The stream of liquid issuing from the feed pipe is conveyed with a wide area against a substantially vertical wall, to run down thereon in the form of a thin film of uniform thickness. The collecting pipe is arranged on the side of the wall which is remote from the liquid film. The wall has an orifice therethrough in its lower zone for the free end of the collecting pipe which extends obliquely upwardly. The collecting opening has a cross section which widens with progressive movement of the collecting pipe through the orifice.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: January 20, 1976
    Assignee: Werkzeugmaschinenfabrik Adolf Waldrich Coburg
    Inventors: Edmund Eich, Ewald Weber, Heinz Gerner, Rudolf Merkel