Siemens Healthcare Gmbh

Siemens Healthineers Ag

Siemens Aktiengesellschaft

Johann Sukkau

Michael Wullenweber

Ralf Ladebeck

Volker Matschl

Klaus Ludwig

Christopher Horn

Thorsten Speckner

Andrew Dewdney

Daniel Niederloehner

Steffen Schroeter

Andreas Schmidt

Mario Zeller

Stephan Biber

Thorsten Feiweier

Peter Speier

Matthias Fenchel

Dieter Ritter

Swen Campagna

Björn Heismann

Hubertus Fischer

Daniel Niederlöhner

Ronny Pflichtbeil

Thomas Benner

Bernd Kuehn

Daniel Nico Splitthoff

Michael Köhler

Volker Schnetter

Gudrun Ruyters

Jörg Rothard

Stephan Stoecker

Venkata Veerendranadh Chebrolu

Peter Kollasch

Markus Petsch

Kay Uwe Seemann

Martin Nisznansky

Steffen Schröter

Rolf Schmidt

Joerg Rothard

Helmut Wrobel

Michael Roas-Löffler

Volker Weißenberger

Axel Heitland

Thomas Loeffler

Helmut Stark

Christian Hetz

Stefanie Splitthoff

Vincenzo Castiglione

Michael Leigart

Andreas Schäfer

According to one or more example embodiments, a shim apparatus for an MR apparatus includes a specimen holder, the specimen holder including a plurality of MR reference specimens, the MR reference specimens being on the specimen holder; a frame; a shaft, the shaft being mounted on the frame such that the shaft is rotatable about an axis of rotation, the specimen holder being non-rotatably connected to the shaft, the MR reference specimens being spaced apart from the axis of rotation; a drive unit, the drive unit being configured to output a torque, the drive unit being electrical or pneumatic; and a gear unit, the gear unit being configured to transfer the torque output by the drive unit to the shaft and to rotate or swivel the MR reference specimens about the axis of rotation.

Shim apparatus, method for using the shim apparatus and MR apparatus

A module for use in a magnetic resonance apparatus, a system, and a method for predicting a potential failure of a module are provided. The module includes at least one sensor configured to detect values of at least one module parameter of the module. The module parameter, such as detected values thereof, is suitable for predicting a potential failure of the module on the basis thereof.

Predicting a potential failure of a module for use in a magnetic resonance apparatus

A method for checking the functionality of an MR sensor within a local coil arrangement, the method including: acquiring at a first couch position a first measurement value from the magnetic field sensor outside the bore at the first measurement position of the local coil arrangement, and determining the first position information; acquiring at a second couch position a second measurement value from the magnetic field sensor during or after the conclusion of the couch's travel into the bore at a second measurement position of the local coil arrangement, which second measurement position differs from the first; determining a reference value, which specifies the expected main magnetic field at the second measurement position, determined from the first position information and the couch's displacement distance; and determining error information, which indicates a potential measurement error, by comparing the second measurement value with the reference value.

Measurement position error determination in a magnetic resonance device

The disclosure relates to a radio-based physiological acquisition system for an RF-shielded room comprising a peripheral acquisition unit with a peripheral transmitter, a peripheral control unit, and a door sensor unit. The door sensor unit is configured to determine an opening status of a door in an RF shield around the RF-shielded room. The peripheral acquisition unit is configured to switch off the peripheral transmitter depending on the opening status of the door, e.g. when the door is open.

Physiological acquisition system for use in an RF-shielded room

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 and positioning system for determining a region to be examined in a subject on a movable support of a medical imaging system. The method includes: a) manually specifying the region by positioning a predetermined marker object in relation to the subject; b) acquiring the position of the marker object by an acquisition apparatus; c) projecting or displaying a feedback marking by a projection apparatus at the acquired position on the subject, wherein the position of the marker object and the acquired position are adjustable; d) calculating a scan position of the movable support on the basis of the acquired position by means of a computer unit, wherein in the scan position, the region to be examined is arranged in an acquisition region of the imaging system; and e) automatically moving the movable support into the scan position with a motor.

Method and positioning system for determining a region to be examined in a subject

A direct current (DC) motor for operation in an external magnetic field may include a rotor which is rotatable about a rotation axis and has at least two windings, at least four continuous rotary transmitters, wherein two rotary transmitters are associated with each of the windings and are configured to supply the associated winding with direct current, an angle sensor which is configured to determine the angular position of the rotor, and a controller configured to control the current feed to at least one of the windings dependent upon the angular position of the rotor. The motor is oriented relative to an external magnetic field during operation so that the rotation axis extends transversely to the external magnetic field.

DC motor with angle sensor, rotor with windings and rotary transmitter for DC motor, couch for magnetic resonance system, and method for operating a DC motor with angle sensor

The disclosure relates to an RF coil device for an MR or hybrid MR-PET imaging modality, the RF coil device having a marker arrangement comprising a plurality of electromagnetic radiation markers disposed at the outer surface of its housing, wherein the electromagnetic radiation markers are adapted to reflect or emit electromagnetic radiation within the ultraviolet, visible, infrared (IR) and/or Terahertz spectrum. The disclosure also relates to detecting the position and/or orientation and/or shape of the RF coil device using electromagnetic radiation emitted from the electromagnetic radiation markers, and determining an attenuation map for the RF coil device by transforming a predefined attenuation map using the determined position and/or orientation and/or shape of the RF coil device.

RF coil device for an MR-PET imaging modality and method to determine the position and/or orientation and/or shape of an RF coil device

A curtain for shielding an electromagnetic field may include a plurality of strip elements. A first strip element and a second strip element of the plurality of strip elements may have an electrically conductive layer. In a shielding configuration of the curtain, the electrically conductive layer of the first strip element is electrically connected to the electrically conductive layer of the second strip element and/or to an electrical connecting terminal for a reference potential. The plurality of strip elements can be variably positioned against one another.

Curtain and shielded chamber for shielding an electromagnetic field

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 computer-implemented method for provision of a result dataset having position information of a local radio-frequency coil, including: providing input data having at least magnetic resonance data, which is acquired by means of the local radio-frequency coil; determining a result dataset by applying a trained function to the input data, wherein the result dataset comprises position information for determining the position of the local radio-frequency coil; and providing the result dataset.

Provision of position information of a local RF coil

A magnetic resonance (MR) system may include a MR device and a MR-compatible drive. The MR device may include a scanner with a basic magnet for generating a homogeneous basic magnetic field. The MR-compatible drive may include an electric motor with a stator. The stator of the electric motor may include a dominant component of the basic magnetic field of the basic magnet.

Magnetic resonance system with a magnetic resonance device and a magnetic resonance-compatible electric motor

A method and a system for providing parameters of a resonance frequency spectrum of a magnetic resonance scan. The system includes: an input interface for receiving a resonance frequency spectrum of a magnetic resonance scan and a computing device configured to implement a trained machine learning algorithm. The trained machine learning algorithm is trained to receive the resonance frequency spectrum received by the input interface as its input and to generate as its output a set of parameters of the resonance frequency spectrum. The system further includes an output interface configured to output the generated set of parameters.

System and method for providing at least one parameter for a magnetic resonance scan

A relative substance composition (RSC) of a portion of a body of a patient in a field of view for a medical image to be taken from the patient in a medical imaging scan is estimated. An input interface receives a piece of patient information data (PPID) and receives a piece of field-of-view information data (PFID). A computing device is configured to implement a trained machine learning algorithm (MLA). The trained MLA is configured and trained to receive the PPID and the PFID received by the input interface as an input and to generate as an output an output signal indicating an RSC of a portion of the body of the patient for the medical image based on the PPID and the PFID. An output interface outputs at least the output signal.

System and method for estimating a relative substance composition of a portion of a body of a patient

Systems and methods for determining proton spectral characteristics associated with a pair of targets from an MRI data volume are provided. The methods can include identifying spectral widths and peak-to-peak distance associated with the targets from the MRI data volume. The targets could include water and fat. The identified proton spectral characteristics can be useful for accurate spectral fat saturation, improving dynamic shim routines, and optimizing bandwidth of radiofrequency pulses used in multi-slice or multi-band excitation.

System and method for automated identification of spectral characteristics

Growing community of inventors

Herzogenaurach, Germany

Johann Sukkau