公开(公告)号：US10393845B2

公开(公告)日：2019-08-27

申请号：US15368607

申请日：2016-12-03

Applicant: Steffen Schröter ,  Jan Bollenbeck ,  Matthias Fenchel ,  Peter Speier ,  Markus Vester

Inventor： Steffen Schröter ,  Jan Bollenbeck ,  Matthias Fenchel ,  Peter Speier ,  Markus Vester

IPC: G01R33/36 ,  G01R33/565

Abstract: A transmitter for pilot tone navigation in a magnetic resonance tomography system includes a power supply and an antenna. The transmitter is configured to transmit a pilot tone signal via the antenna. The transmitter also includes a decoupling element in order to protect a transmitter output from signals that the antenna receives with excitation pulses of the magnetic resonance tomography system during a magnetic resonance tomography. In a method, movement-dependent changes to the pilot tone signal of the transmitter are identified by a controller of the magnetic resonance tomography system.

公开(公告)号：US10168399B2

公开(公告)日：2019-01-01

申请号：US14997071

申请日：2016-01-15

Applicant: Robert Rehner ,  Markus Vester

Inventor： Robert Rehner ,  Markus Vester

IPC: G01R33/24 ,  G01R33/422 ,  G01R33/58 ,  G01R33/34 ,  G01R33/565

Abstract: The embodiments relate to a method and field probes for measuring a static and/or in particular a dynamic magnetic field in an imaging magnetic resonance tomography system, wherein the field probe includes a body surrounded by a coil. The coil includes a middle or center winding section and at least one or two outer winding sections.

公开(公告)号：US10145918B2

公开(公告)日：2018-12-04

申请号：US13784797

申请日：2013-03-04

Applicant: Nikolaus Demharter ,  Klaus Huber ,  Claus Seisenberger ,  Thorsten Speckner ,  Markus Vester ,  Christian Wünsch

Inventor： Nikolaus Demharter ,  Klaus Huber ,  Claus Seisenberger ,  Thorsten Speckner ,  Markus Vester ,  Christian Wünsch

IPC: G01R33/54 ,  G01R33/36

Abstract: A method for emitting a sequence of high frequency pulses that may have different envelopes in a magnetic resonance tomography system is provided. A digital instruction signal that specifies the envelope for the high frequency pulses that are to be emitted is received. A digital control signal is transmitted to a high frequency unit for generating high frequency pulses, depending on the instruction signal. A test signal that allows notification of a current overload situation is received. The current control signal is reduced if the test signal indicates an overload situation.

公开(公告)号：US09910113B2

公开(公告)日：2018-03-06

申请号：US13923308

申请日：2013-06-20

Applicant: Markus Vester

Inventor： Markus Vester

IPC: G01V3/00 ,  G01R33/36

CPC classification number: G01R33/3692 ,  G01R33/3621

Abstract: A local coil for a magnetic resonance imaging system for acquisition of magnetic resonance signals includes a receiving mechanism for wireless transmission of operating energy of the local coil and/or a signal of the magnetic resonance imaging system. The receiving mechanism is configured to take the operating energy and/or the signal from a supply field. A magnetic resonance imaging system is also provided. The magnetic resonance imaging system includes a transmitting mechanism for wireless transmission of operating energy of a local coil and/or a signal of the magnetic resonance imaging system. The transmitting mechanism has a transmission signal generator that is connected to a field source and a field sink. The transmitting mechanism is constructed such that, in operation, the operating energy and/or the signal is transmitted by a supply field that is present as an electrical alternating voltage field between the field source and the field sink.

公开(公告)号：US20180024206A1

公开(公告)日：2018-01-25

申请号：US15659233

申请日：2017-07-25

Applicant: Björn Heismann ,  Markus Vester

Inventor： Björn Heismann ,  Markus Vester

IPC: G01R33/28 ,  G01R33/30 ,  G01R33/36

Abstract: A magnetic resonance tomography unit includes a control unit, a transmitting unit having one or a plurality of transmitting antennae, a selector, and a high-frequency unit having a signal output in signal connection with the transmitting unit. The transmitting unit is configured to irradiate high-frequency energy using the selector and the one or plurality of transmitting antennae optionally into only a first region of a plurality of different regions in a patient.

公开(公告)号：US09829549B2

公开(公告)日：2017-11-28

申请号：US13890128

申请日：2013-05-08

Applicant: Ludwig Eberler ,  Jürgen Nistler ,  Markus Vester

Inventor： Ludwig Eberler ,  Jürgen Nistler ,  Markus Vester

IPC: G01R33/34 ,  G01R33/422 ,  G01R33/36 ,  G01R33/48 ,  G01R33/563

CPC classification number: G01R33/34092 ,  G01R33/34046 ,  G01R33/34076 ,  G01R33/3628 ,  G01R33/422 ,  G01R33/4806 ,  G01R33/56341

Abstract: A whole-body coil for a magnetic resonance tomography device includes one or more compensation capacitors between a high-frequency antenna and an RF shield. The one or more compensation capacitors each have variable capacitance caused by a variation in a distance of the RF shield to the high-frequency antenna.

公开(公告)号：US09733321B2

公开(公告)日：2017-08-15

申请号：US13854928

申请日：2013-04-01

Applicant: Sebastian Martius ,  Markus Vester

Inventor： Sebastian Martius ,  Markus Vester

IPC: G01R33/34 ,  G01R33/36 ,  G01R33/3415

CPC classification number: G01R33/34 ,  G01R33/34015 ,  G01R33/3415 ,  G01R33/3692

Abstract: A magnetic resonance tomography apparatus includes a receiving device having a number of magnetic resonance receive antennas for receiving a magnetic resonance signal in response to a radio frequency signal transmitted at a magnetic resonance frequency. A respective magnetic resonance receive antenna is connected to a parametric mixer. A receive circuit formed hereby is provided inside the cryostat and is coupled via a contactless communication interface to an evaluation circuit provided outside the cryostat. The evaluation circuit includes a local oscillator device for generating an auxiliary signal at an auxiliary frequency. The auxiliary signal is transmitted via the contactless communication interface to the receive circuit. The receive circuit is configured such that a mixed signal having a mixed frequency is generated via the parametric mixer from the auxiliary signal and the magnetic resonance signal and transmitted via the contactless communication interface to the evaluation circuit.

公开(公告)号：US20160216346A1

公开(公告)日：2016-07-28

申请号：US14997071

申请日：2016-01-15

Applicant: Robert Rehner ,  Markus Vester

Inventor： Robert Rehner ,  Markus Vester

IPC: G01R33/36 ,  G01R33/46

CPC classification number: G01R33/24 ,  G01R33/34053 ,  G01R33/422 ,  G01R33/56563 ,  G01R33/58

Abstract: The embodiments relate to a method and field probes for measuring a static and/or in particular a dynamic magnetic field in an imaging magnetic resonance tomography system, wherein the field probe includes a body surrounded by a coil. The coil includes a middle or center winding section and at least one or two outer winding sections.

Abstract translation: 这些实施例涉及用于测量成像磁共振断层摄影系统中的静态和/或特别是动态磁场的方法和场探头，其中场探头包括被线圈包围的身体。 线圈包括中间绕组部分和中心绕组部分以及至少一个或两个外部绕组部分。

公开(公告)号：US09395426B2

公开(公告)日：2016-07-19

申请号：US13560780

申请日：2012-07-27

Applicant: Andre Albsmeier ,  Jan Bollenbeck ,  Daniel Evers ,  Klaus Pistor ,  Stefan Schwarzer ,  Markus Vester

Inventor： Andre Albsmeier ,  Jan Bollenbeck ,  Daniel Evers ,  Klaus Pistor ,  Stefan Schwarzer ,  Markus Vester

IPC: G01R33/36 ,  A61B5/055 ,  G01R33/28 ,  G01R33/3415

CPC classification number: G01R33/36 ,  A61B5/055 ,  G01R33/288 ,  G01R33/3415 ,  G01R33/3692

Abstract: A method for wireless transfer of energy to a local coil system for a magnetic resonance system is provided. The method includes determining an energy requirement value representing a minimum energy level to be fed to the local coil system, so that the local coil system may carry out a predetermined function over a predetermined time period. Energy is transferred adaptively to the local coil system depending on the energy requirement value.

Abstract translation: 提供了一种将能量无线传递到用于磁共振系统的局部线圈系统的方法。 该方法包括确定表示要馈送到局部线圈系统的最小能级的能量需求值，使得局部线圈系统可以在预定时间段内执行预定功能。 能量根据能量需求值自适应地转移到局部线圈系统。

公开(公告)号：US09297868B2

公开(公告)日：2016-03-29

申请号：US13277006

申请日：2011-10-19

Applicant: Stephan Biber ,  Jürgen Nistler ,  Markus Vester

Inventor： Stephan Biber ,  Jürgen Nistler ,  Markus Vester

IPC: G01R33/34 ,  G01R33/36 ,  G01R33/3415

CPC classification number: G01R33/3607 ,  G01R33/3415 ,  G01R33/3621

Abstract: The present embodiments include an antenna circuit that is adapted to supply and/or read out a plurality of antenna elements of an antenna assembly of a magnetic resonance imaging system. The antenna elements are decoupled by phase shifter elements and supplied with signals by the phase shifter elements. The antenna circuit may also be used to detect signals that are received by the antenna elements.

Abstract translation: 本实施例包括适于提供和/或读出磁共振成像系统的天线组件的多个天线元件的天线电路。 天线元件由移相器元件解耦并由移相器元件提供信号。 天线电路还可以用于检测由天线元件接收的信号。