Patents by Inventor Ralph Kimmlingen

Ralph Kimmlingen 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).

  • Patent number: 11181593
    Abstract: A gradient coil assembly for a magnetic resonant apparatus has a primary coil and a secondary coil, wherein the primary coil has a first primary coil winding and a second primary coil winding, wherein the first primary coil winding and the second primary coil winding are electrically connected to a voltage source and are jointly designed to generate a magnetic field gradient in a direction when the voltage source induces a current in those windings.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: November 23, 2021
    Assignee: Siemens Healthcare GmbH
    Inventor: Ralph Kimmlingen
  • Publication number: 20210156935
    Abstract: A head coil arrangement is for a magnetic resonance tomograph. In an embodiment, the head coil arrangement includes a send coil unit and a receive coil unit. The send coil unit, in the position in which the head coil arrangement is normally used on a patient, is automatically positionable in the longitudinal direction of the patient relative to the head coil arrangement. A further embodiment relates to a magnetic resonance facility comprising the head coil arrangement and a guide element, embodied to transmit a force to a dog. The send coil unit is positionable via the force on the dog.
    Type: Application
    Filed: November 17, 2020
    Publication date: May 27, 2021
    Applicant: Siemens Healthcare GmbH
    Inventors: Ralph KIMMLINGEN, Martin SCHROEDER
  • Publication number: 20200371186
    Abstract: A coil facility for a magnetic resonance installation and a magnetic resonance installation having such a coil facility are provided. The coil facility in this case includes a double-resonant transmit resonator for two frequencies and a first receiver and a second receiver, each for one of the two frequencies. The coil facility has an actuator system for effecting a relative spatial transposition of the transmit resonator, the first receiver, and the second receiver into various settings. In a first setting, only the first receiver, and in a second setting, only the second receiver, for receiving corresponding MR signals is arranged in an examination space that is at least sectionally surrounded by the transmit resonator.
    Type: Application
    Filed: May 22, 2020
    Publication date: November 26, 2020
    Inventor: Ralph Kimmlingen
  • Patent number: 10830857
    Abstract: A method and a magnetic resonance tomography (MRT) system are provided. The MRT system includes a controller configured to store a transmit vector that is established on a local-coil-specific basis. The transmit vector, for a specific local coil, indicates with which amplitudes and phases, transmit elements of the local coil may be controlled by a transmit device. The controller is configured to initiate a patient-specific calibration measurement on a patient to generate patient-specific calibration data representing a field distribution. The controller is also configured to determine deviations in the patient-specific calibration data from the stored transmit vector established on a local-coil-specific basis. The patient-specific calibration data is generated in the patient-specific calibration measurement on the patient and represents a field distribution. An imaging MRT measurement is not allowed if deviations exceed a threshold value, but is otherwise performed and is monitored by a monitoring device.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: November 10, 2020
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Ralph Kimmlingen, Norbert Rietsch
  • Publication number: 20180335493
    Abstract: A gradient coil assembly for a magnetic resonant apparatus has a primary coil and a secondary coil, wherein the primary coil has a first primary coil winding and a second primary coil winding, wherein the first primary coil winding and the second primary coil winding are electrically connected to a voltage source and are jointly designed to generate a magnetic field gradient in a direction when the voltage source induces a current in those windings.
    Type: Application
    Filed: May 18, 2018
    Publication date: November 22, 2018
    Applicant: Siemens Healthcare GmbH
    Inventor: Ralph Kimmlingen
  • Publication number: 20180321344
    Abstract: In a method and device for regulating the temperature of the at least partly magnetizable environment of a gradient coil arrangement of a magnetic resonance apparatus, a computer is provided with a first item of information, representing a time-dependent power output of the gradient coil arrangement, and the computer ascertains a prospective temperature of the at least partly magnetizable environment from the first item of information. The computer determines a compensating temperature for a temperature regulating medium based on the ascertained prospective temperature, so that the temperature regulating medium with the compensating temperature produces a temperature in the at least partly magnetizable environment that is stable over time while the time-dependent power output is occurring. The temperature of the at least partly magnetizable environment of the gradient coil arrangement is thereby regulated by producing the compensating temperature in the temperature regulating medium.
    Type: Application
    Filed: May 4, 2018
    Publication date: November 8, 2018
    Applicant: Siemens Healthcare GmbH
    Inventor: Ralph Kimmlingen
  • Patent number: 10036794
    Abstract: A patient couch for a magnetic resonance tomography system and a magnetic resonance tomography system are provided. The patient couch includes a feed facility for radiofrequency energy having a plurality of conduction paths for feeding radiofrequency energy. The patient couch also includes a plurality of plug-in connectors for local coils having a transmit coil, and a distribution structure for the distribution of radiofrequency energy from the feed facility to the plug-in connectors.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: July 31, 2018
    Assignee: Siemens Healthcare GmbH
    Inventors: Ralph Kimmlingen, Norbert Rietsch
  • Publication number: 20180003791
    Abstract: A patient couch for a magnetic resonance tomography system and a magnetic resonance tomography system are provided. The patient couch includes a feed facility for radiofrequency energy having a plurality of conduction paths for feeding radiofrequency energy. The patient couch also includes a plurality of plug-in connectors for local coils having a transmit coil, and a distribution structure for the distribution of radiofrequency energy from the feed facility to the plug-in connectors.
    Type: Application
    Filed: June 30, 2017
    Publication date: January 4, 2018
    Inventors: Ralph Kimmlingen, Norbert Rietsch
  • Patent number: 9841475
    Abstract: The embodiments relate to a magnetic resonance imaging device, where the cladding of the patient bore of the MR imaging device includes a conductive layer.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: December 12, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ralph Kimmlingen, Norbert Rietsch
  • Publication number: 20160041250
    Abstract: A method and a magnetic resonance tomography (MRT) system are provided. The MRT system includes a controller configured to store a transmit vector that is established on a local-coil-specific basis. The transmit vector, for a specific local coil, indicates with which amplitudes and phases, transmit elements of the local coil may be controlled by a transmit device. The controller is configured to initiate a patient-specific calibration measurement on a patient to generate patient-specific calibration data representing a field distribution. The controller is also configured to determine deviations in the patient-specific calibration data from the stored transmit vector established on a local-coil-specific basis. The patient-specific calibration data is generated in the patient-specific calibration measurement on the patient and represents a field distribution. An imaging MRT measurement is not allowed if deviations exceed a threshold value, but is otherwise performed and is monitored by a monitoring device.
    Type: Application
    Filed: August 5, 2015
    Publication date: February 11, 2016
    Inventors: Ralph Kimmlingen, Norbert Rietsch
  • Patent number: 9182465
    Abstract: In one embodiment, a magnetic resonance tomography system that has a gradient field coil system for generating a gradient field is provided. The gradient field coil system is also a main magnetic field generation system for generating a main field.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: November 10, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ralph Kimmlingen, Johann Schuster
  • Patent number: 9182466
    Abstract: The present embodiments optimize a gradient coil structure with a gradient coil arrangement for a magnetic resonance tomography device. The gradient coil arrangement includes a carrier plate with holes. Inserts are located in the holes. The inserts are made of an electrically isolating, thermally conductive material.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: November 10, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ralph Kimmlingen, Johann Schuster
  • Patent number: 9176209
    Abstract: A gradient pulse generator generates reference current signals for a plurality of gradient coils of a gradient coil system of a magnetic resonance system and supplies each of the reference current signals to a controller assigned to one of the gradient coils. Also supplied to the respective controller is an actual current signal that is characteristic of the current flowing in the respective gradient coil. Each of the controllers generates a control signal and accordingly drives a gradient power amplifier assigned to the respective gradient coil. The gradient power amplifiers apply a current to the gradient coils assigned to the gradient power amplifiers in accordance with the generated control signals. Each of the controllers is also supplied with the reference current signal or the actual current signal of at least one other gradient coil or the time derivative of the reference current signal or the actual current signal.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: November 3, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Eva Eberlein, Ralph Kimmlingen, Helmut Lenz, Franz Schmitt
  • Patent number: 9110145
    Abstract: A controller of a magnetic resonance system determines an activation signal vector based on a target field predetermined for the controller in conjunction with field characteristics of field coils known to the controller. The activation signal vector includes a respective activation signal for each field coil. The controller determines the activation signal vector such that within a predetermined examination volume of the magnetic resonance system, any deviation of an ideal field that would result if ideal coils were subjected to the activation signals of the activation signal vector from the target field is minimized. The controller determines a compensation signal vector based on the activation signal vector in conjunction with eddy current characteristics of the field coils known to the controller. The compensation signal vector is used to minimize a deviation of an actual field from the target field within the predetermined examination volume of the magnetic resonance system.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: August 18, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Eva Eberlein, Ralph Kimmlingen, Franz Schmitt, Johann Schuster
  • Patent number: 8991036
    Abstract: A method for producing a gradient coil assembly for a magnetic resonance imaging system includes applying a number of primary gradient coils and a number of secondary gradient coils to a winding mandrel to form the gradient coil assembly. A control coil arrangement is associated with the winding mandrel. During an intermediate check before completion of the gradient coil assembly, at least one coupling inductance value between the control coil arrangement and at least one of the primary gradient coils and/or at least one of the secondary gradient coils is determined. An arrangement of the relevant gradient coils on the winding mandrel is corrected as a function of the at least one coupling inductance value.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: March 31, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Sascha Fath, Ralph Kimmlingen, Johann Schuster
  • Patent number: 8963548
    Abstract: A cylindrical gradient coil arrangement is provided for a magnetic resonance device. The arrangement includes at least one conductive structure that forms at least one gradient coil and a cooling device that uses a cooling fluid to cool the at least one conductive structure. The arrangement includes an outer carrier structure and an inner carrier structure. The outer carrier structure includes two tubular, coaxial outer sections with different diameters. The inner, tubular carrier structure is arranged between and coaxially with the outer sections. The conductive structure is placed on the inner carrier structure. The inner carrier structure is spaced from the outer sections by a clearance. The clearance forms a cooling channel through which the cooling fluid of the cooling device may flow. The inner carrier structure is fastened to the outer carrier structure at least in a point-by-point manner.
    Type: Grant
    Filed: March 2, 2013
    Date of Patent: February 24, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ralph Kimmlingen, Andreas Krug
  • Publication number: 20150015261
    Abstract: The embodiments relate to a magnetic resonance imaging device, where the cladding of the patient bore of the MR imaging device includes a conductive layer.
    Type: Application
    Filed: June 17, 2014
    Publication date: January 15, 2015
    Inventors: Ralph Kimmlingen, Norbert Rietsch
  • Publication number: 20140347054
    Abstract: A magnetic resonance system includes a basic magnet that surrounds a cylindrical examination volume of the magnetic resonance system, the cylindrical examination volume defining a longitudinal axis, and a send structure configured to generate a high frequency excitation field (B1) in the examination volume. The high frequency excitation field is configured to excite an object to be examined in the examination volume, such that the object emits magnetic resonance signals. The basic magnet is configured to generate a basic magnetic field (B0) in the examination volume that is constant over time and at least substantially homogeneous spatially. The send structure includes at least first transmitting antennae and second transmitting antennae that are configured to load the examination volume with the high frequency excitation field (B1).
    Type: Application
    Filed: May 21, 2014
    Publication date: November 27, 2014
    Inventors: Ralph Kimmlingen, Norbert Rietsch
  • Patent number: 8755582
    Abstract: In a method and device to determine distortion correction data for distortion correction of magnetic resonance images acquired with a magnetic resonance system, a starting spherical function is calculated represents the magnetic field of a gradient coil of the magnetic resonance system on the basis of the conductor geometry of the gradient coil. A three-dimensional parameter map is determined that represents a magnetic field generated by the gradient coil using a defined measurement subject, with a defined gradient strength being set for the appertaining gradient coil. A deviation parameter map is generated on the basis of the parameter map and on the basis of a reference parameter map which was determined with deactivated gradient coil. Spherical function coefficients of the gradient magnetic field are determined by fitting a spherical function representing the magnetic field of the gradient coil to the deviation parameter map using the starting spherical function.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: June 17, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ralph Kimmlingen, Sabrina Kreher, Andreas Weidemann
  • Patent number: 8643370
    Abstract: A cooling water measurement system for a gradient system of an imaging system, such as a magnetic resonance system, is provided. A volume of cooling water flowing through at least one gradient system cooling water tube of the gradient system per unit of time is determined. The gradient system cooling water measurement system includes a voltage measurement system for measuring a Hall voltage.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: February 4, 2014
    Assignee: Siemens Aktiengellschaft
    Inventor: Ralph Kimmlingen