Siemens Aktiengesellschaft

Siemens Healthcare Gmbh

Siemens Medical Solutions Usa, Inc.

Johns Hopkins University

Siemens Healthineers Ag

Siems Aktiengesellschaft

Quality Electrodynamics (qed)

Volker Matschl

Jürgen Nistler

Ludwig Eberler

Rainer Paul

Razvan Lazar

Johann Sukkau

Rainer Kurth

Stephan Biber

Arne Reykowski

Matthias J Schmand

Arne Hengerer

A Andrew Carey

Johannes Breuer

Martin Schramm

Steffen Schroeter

Markus Vester

Sebastian Schmidt

Wolfgang Renz

Paul Arthur Bottomley

Tsinghua Zheng

James Luke Corbeil

Björn Heismann

Juergen Nistler

Nan Zhang

Stephan Zink

Hubertus Fischer

Dirk Diehl

Jonathan S Lewin

Ziad Burbar

Lars Lauer

Sebastian Martius

Wen Ming Li

Christian J Michel

Eva Rothgang

Niraj K Doshi

Jun You

Clifford R Weiss

Zeng He He

Wesley David Gilson

Christian Wünsch

Jan Fritz

Heinrich Von Busch

Matthew Finnerty

Jürgen Hagen

Steffen Schröter

Benedikt Hartinger

Katarzyna J Macura

Heinz Hahn

Charles H Hayden, Jr

Helmut Stark

Georg Martschenko

Xinli Liu

Andre Bender

Daniel Gareis

Manuel Noras

Gregory Weisberg

Sandra Weiβ

At least one example embodiment provides a magnetic resonance imaging system comprising at least one local radiofrequency (RF) coil; and at least one marker element, wherein the magnetic resonance imaging system is configured to activate the at least one marker element and deactivate the at least one marker element such that the at least one marker element is detectable by the magnetic resonance imaging system at a position relative to the at least one local RF coil if the at least one marker element is activated, and the at least one marker element is not detectable by the magnetic resonance imaging system if the at least one marker element is deactivated.

Magnetic resonance imaging system and method for determining the position of at least one coil in a magnetic resonance imaging

A method for ascertaining at least one of a position or an orientation of an MR local coil unit for arrangement inside a main magnetic field includes providing a first 3D relative position of a reference sensor system in relation to the main magnetic field; receiving an acceleration vector from at least one acceleration sensor; retrieving a distance vector describing a fixed relative position as a function of the received acceleration vector; calculating a second 3D relative position of the at least one acceleration sensor in relation to the main magnetic field based on the first 3D relative position and the retrieved distance vector; and ascertaining the at least one of the position or the orientation of the MR local coil unit using the first 3D relative position and the second 3D relative position.

Method for ascertaining a position and/or an orientation of an MR local coil unit

A system and method are provided for operating a magnetic resonance tomograph. A transmitter of the magnetic resonance tomograph transmits a predetermined test pulse with a reduced power. The magnetic resonance tomograph receives the test pulse with the local coil. A controller compares the received test pulse with a predetermined pulse response and emits a warning signal when the received test signal differs from the predetermined pulse response.

Method and device for monitoring local coils

A magnetic resonance coil having at least one tuning device for tuning the magnetic resonance coil, a magnetic resonance device, and a method for tuning a magnetic resonance coil are provided. The at least one tuning device includes a plurality of capacitors that are mechanically interlinked.

Tunable magnetic resonance coil

The disclosure relates to a compensation capacitor for an antenna of a magnetic resonance scanner and a corresponding antenna with a compensation capacitor. The compensation capacitor has a first electrode and a second electrode arranged in parallel. An insulation material configured to resist high voltages and a dielectric with low dielectric losses are arranged between the first and the second electrode. The second electrode and/or the dielectric may be moved relative to the first electrode such that a surface area of a projection of the surface of the first electrode along the surface normal of the first electrode to the surface of the second electrode and/or the dielectric is variable.

Flat adjustable capacitor for magnetic resonance scanner

Radio-frequency (RF) coil apparatus for magnetic resonance imaging has a base and an RF coil, wherein the base has a sliding base guide structure and a guide cavity, the RF coil has a sliding coil structure fitting the sliding base guide structure, and an electric cable of the RF coil is accommodated in the guide cavity and can move in the guide cavity. One end of the electric cable is fixed to the RF coil by a first fixing bracket, and another end of the electric cable is fixed to the base by a second fixing bracket so that a predetermined length of the cable projects from the base.

Radio-frequency coil apparatus and base having a sliding and coil management system

The embodiments relate to a body coil, to a magnetic resonance device, and to a method for operating a magnetic resonance device. The body coil includes at least one antenna unit and at least one pre-amplification unit, wherein the pre-amplification unit is arranged at a feed point of the antenna unit, wherein the pre-amplification unit has an input reflection factor at the feed point of the antenna unit whose value is greater than 0.7.

Body coil having a pre-amplification unit configured to provide a detuning effect

The present embodiments relate to an MR local coil arrangement and an MR unit. An MR local coil arrangement is disclosed including at least one MR antenna, an illumination unit with at least one light-generating unit to illuminate an illumination region, and a switching unit with at least one sensor to control the illumination unit.

Illuminated MR local coil arrangement

In order to provide interventional access during an image-guided interventional procedure, while increasing the signal-to-noise ratio for generated images compared to a single loop coil, a local coil includes a single coil element disposed around an opening through the local coil and two coil elements positioned on opposite sides of the single coil element. The opening provides access for an interventional tool used during the image-guided interventional procedure.

MRI coil for use during an interventional procedure

A device and a method are provided for status acquisition of a RF coil on or in a magnetic resonance device. The device may be arranged on the RF coil and comprises a status acquisition unit. The status unit is configured to acquire a status of the RF coil and to generate a status-dependent output signal.

Status acquisition of a RF coil on or in a magnetic resonance device

A configurable coil arrangement for use with MRI-guided procedures is provided that facilitates optimal imaging for both pre-procedure planning and imaging of the target sites during the procedure. The coil arrangement includes a plurality of connected coil elements. Spacers connecting the coil elements can be adjustable and/or deformable to provide one or more openings in the coil arrangement of optimal size for accessing the subject within the imaged region. Individual coil elements can also be removed to provide access openings during such procedures, or left in the array for improved pre- and post-procedure image quality. The MRI system can be configured to detect configurations of the coil arrangement and modify imaging parameters to optimize image quality.

Magnetic resonance imaging coil with adjustable opening

A device for a magnetic resonance imaging system includes a warning signal apparatus configured to emit a warning signal when a limit value is exceeded by a current induced in the device by radiofrequency signals of a magnetic resonance imaging system.

Temperature monitoring of local coils

A patient support apparatus for a medical imaging apparatus, such as a magnetic resonance apparatus, is proposed. The patient support apparatus has a couch, a lifting unit for vertical movement of the couch, a travel unit, and at least one sensor unit to detect at least one weight variable for determining the weight of a patient. The at least one sensor unit has at least one sensor element, which is disposed on the lifting unit and/or on the travel unit.

Patient support apparatus for a medical imaging apparatus and a medical imaging apparatus having the patient support apparatus

A magnetic resonance antenna arrangement includes at least one first antenna group including individually-controllable first antenna conductor loops and a second antenna group adjacent to the first antenna group. The second antenna group includes individually-controllable, longitudinal second antenna elements. The first antenna conductor loops essentially extend in a first extending surface and are disposed in the first extending surface in a first direction in a row behind one another. The longitudinal second antenna elements extend with the longitudinal axes transverse to the first direction disposed in parallel next to one another in a second extending surface that runs essentially in parallel to the first extending surface. Each of the second antenna elements are coupled at first and second end areas to a conductive element to form a second conductor loop with the conductive element. The second antenna elements are disposed to overlap an adjacent first antenna loop in each case.

Magnetic resonance antenna arrangement and magnetic resonance system

A method for operating a magnetic resonance facility is proposed. The magnetic resonance facility has a number of power-consuming components. The power consumption is determined for each component. Operation of the components is controlled based on at least one criterion so that a predetermined threshold value for the overall power consumption of the magnetic resonance facility is not exceeded.

Automatic control of the power consumption of a magnetic resonance facility

Growing community of inventors

Bamberg, Germany

Volker Matschl