Siemens Aktiengesellschaft

Siemens Healthcare Gmbh

Paul Scherrer Institut

Siemens Healthineers Ag

Yale University

Schleifring Und Apparatebau Gmbh

The General Hospital Corporation

Siemens Aktiengesell Schaft

Stefan Popescu

Eckhard Hempel

Martin Hoheisel

Franz Pfeiffer

Christian David

Thomas Mertelmeier

Joachim W Baumann

Manfred Schuster

Martin Engelhardt

Jörg Freudenberger

Markus Vester

Björn Heismann

Georg Wittmann

Matthias Gebhardt

Heiko Wolf

Tilman Donath

Stephan Biber

Andreas Greiser

Sultan Haider

Andreas Krug

Adrian Mark Thomas

Michael Mallett

Dietmar Hentschel

Peter Speier

Rainer Raupach

Robert Todd Constable

Christoph Suess

Joachim Grottel

Dieter Cherek

Gigi Galiana

Christoph Süb

David Grodzki

Herbert Bruder

Lawrence Leroy Wald

Thomas Beck

Thorsten Speckner

Stephan Kannengiesser

Matthias Fenchel

Peter Dietz

Detlef Mattern

Franz Dirauf

Edgar Mueller

Nils Krumme

Lars Lauer

Thilo Hannemann

Robert Rehner

Bruce R Rosen

Daniel Rinck

Carmel Hayes

Mario Festag

Gudrun Ruyters

Edgar Müller

Jason Stockmann

Annette Stein

Herbert Weithmann

Mathias Blasche

Stephan Kannengießer

Silvia Bettina Arroyo Camejo

Stephan Lindorfer

Kuan Jin Lee

Matthias Honal

Rainer Kirsch

Wolf-Ekkehard Blanz

Karl-Ernst Strauss

Martin Bauer

Marco Leone

Donald Hardie

Nicolae Rusca

Jens Fuerst

Annemarie Bakai

Gerd Neubauer

Wolfgang Edler

Barbara Matthis

Ulrich Bertl

Klaus Gruber

A magnetic resonance system configured to acquire magnetic resonance data of an object in an field-of-view, wherein the magnetic resonance system includes a magnet that is configured such that it creates a gradient field at the field-of-view; a controller configured to cause the magnetic resonance system to utilize the magnet's gradient field for diffusion weighted imaging or mixed contrast imaging; and a unit of one or several RF coils, wherein the RF coils are configured to acquire magnetic resonance data from the object and to support or flexibly attach to the patient body.

Magnetic resonance system and corresponding method

A magnetic resonance imaging system can include a basic field magnetic arrangement for generating a main magnetic field and a number of spatially separated imaging regions, the basic field magnetic arrangement including several spatially separated magnet segments, in order to generate segment magnetic fields with a defined segment field direction, at least two of the spatially separated magnet segments being configured in a way that their defined segment field directions are running in an angular fashion to each other so that the segment magnetic fields result in a main magnetic field which has the form of toroid, where the magnetic resonance imaging system is designed to be adapted to MR imaging of dedicated body or organ parts of a patient.

Toroidal system configuration for dedicated MRI scanners

A method for ascertaining a magnetic field of at least one magnetic coil unit of a magnetic resonance apparatus, a magnetic resonance apparatus, and a computer program product are provided. According to the method, the magnetic field is generated by the at least one magnetic coil unit. A plurality of magnetic field vectors are detected at different positions of the magnetic field by a magnetic field sensor unit, where each magnetic field vector of the plurality of magnetic field vectors describes a strength, such as a magnitude, and a direction of the magnetic field at the respective position. The magnetic field is ascertained. To ascertain the magnetic field based on the plurality of magnetic field vectors, a model of a vector field is ascertained.

Method for ascertaining a magnetic field of at least one magnetic coil unit of a magnetic resonance apparatus, magnetic resonance apparatus and computer program product

A magnetic resonance imaging device may include a field generator for generating at least one magnetic gradient field. The field generator may include a first magnet and a second magnet confining an imaging volume of the magnetic resonance imaging device in two spatial directions. The first magnet and the second magnet may be arranged asymmetrically with respect to the imaging volume. The magnetic resonance imaging device may be used to perform a method for acquiring an image of a diagnostically relevant body region of a patient.

Magnetic resonance imaging device with asymmetric field generation unit

A magnetic resonance imaging device having a field generation unit configured to provide a magnetic field in an imaging volume of the magnetic resonance imaging device. The field generation unit has at least one magnet. A surface of the field generation unit directed towards the imaging volume of the at least one magnet has a concave shape, wherein a direction of access to the imaging volume is oriented essentially perpendicular to a main direction of magnetic field lines in the imaging volume.

Magnetic resonance imaging device with a concave-shaped field generation unit

A MRI device including a main field unit for establishing a main magnetic field (MF) in an imaging region, a gradient coil assembly for generating a gradient field in the imaging region, a RF arrangement for sending excitation signals to and receiving MR signals from the imaging region, a field camera for determining MF information in the imaging region, the field camera comprising multiple MF sensors arranged at measurement positions enclosing the imaging region, and a controller. The controller is configured to receive sensor data for each measurement positions, from the sensor data, calculate the MF information for the imaging region, and implement a calibration and/or correction measure depending on the MF information. The field camera may be a vector-field camera acquiring vector-valued sensor data describing the MF at each measurement positions three-dimensionally. The controller may determine the MF information to three dimensionally describe the MF in the imaging region.

Magnetic resonance imaging device, computer-implemented method for operating a magnetic resonance imaging device, computer program and electronically readable storage medium

A measurement device for measuring MR signals in a MR device may include first and second magnetometers and a controller. The first magnetometer may be a quantum spin magnetometer that includes a sensor material having a spin defect center including Zeeman splitting states dependent on an external magnetic field of the MR device, an optical excitation source and a microwave excitation source for electromagnetically exciting the sensor material, and a measurement sensor for measuring optical signals emitted by the excited sensor material element and depending on the Zeeman splitting states. The controller may be configured to determine a working frequency of the microwave excitation source of the first magnetometer from the total magnetic field strength measured by the second magnetometer, and control the microwave excitation source to use the determined working frequency as microwave frequency, such that the first magnetometer measures the MR signals as the optical signal.

Measurement device and method for measuring magnetic resonance signals in a magnetic resonance device and magnetic resonance device

The disclosure describes a magnet system for a magnetic resonance imaging system comprising a basic field magnet and a gradient system, wherein coils of the gradient system are positioned outside the area of a predefined basic magnetic field (B) of the basic field magnet. The disclosure further describes a gradient system and a magnetic resonance imaging system with such a magnet system.

Magnet system for a magnetic resonance imaging system

A magnetic resonance imaging system comprises a field generation unit and a supporting structure for providing structural support for the field generation unit, wherein the field generation unit comprises at least one magnet for generating a B0 magnetic field and an opening configured to provide access to an imaging volume positioned in the B0 magnetic field along at least one direction and wherein the at least one direction is angled with respect to a main direction of magnetic field lines of the B0 magnetic field in the imaging volume.

Magnetic resonance scanner and magnetic resonance imaging system

The disclosure relates to a receiving unit configured for acquiring MR signals from an examination object in a magnetic resonance device. The receiving unit may include a detector unit comprising a light source and a first optical detector, a sensor unit comprising a first optical magnetometer, a first optical waveguide connecting the sensor unit to the light source, and a second optical waveguide connecting the sensor unit to the first optical detector.

Quantum sensor-based receiving unit configured for acquiring MR signals

Techniques are disclosed related to increasing prior limits imposed on MR gradient switching speed (dB/dt) without causing significant discomfort or severe pain perception to patients. The technique disclosed herein do so by modifying the pulsing gradient fields that are ordinarily available for MR imaging protocols. Doing so stimulates the peripheral nerves and thus enables a quick, reversible, and complete inhibition of action potential propagation through the stimulated region of tissue, referred to as a nerve conduction block.

Avoidance of peripheral nerve stimulation (PNS) using induced analgesia

A magnetic resonance apparatus, for acquiring magnetic resonance data from a person who is asleep, includes a person support apparatus to provide a sleeping place; an acquisition arrangement including a radiofrequency coil arrangement for transmitting excitation pulses and for receiving magnetic resonance signals; and a controller, designed to operate the acquisition arrangement according to a magnetic resonance sequence for acquiring a magnetic resonance dataset from a region under examination of the person. The magnetic resonance apparatus includes a main magnetic field of strength less than 20 mT, in particular less than 10 mT, and the controller includes an acquisition unit for acquiring a magnetic resonance dataset via a prolonged magnetic resonance sequence having a total acquisition duration of more than one hour.

Magnetic resonance apparatus and method for operating a magnetic resonance apparatus, computer program and electronically readable data storage medium

A gradient system for a magnetic resonance imaging system can include at least two examination areas using a common basic magnetic field and a number of gradient coils in the at least two examination areas, and a gradient controller configured such that it controls the electric current flowing through at least two gradient coils for similar gradient axes in different examination areas in a temporal synchronous manner.

Gradient system for a magnetic resonance imaging system

The present disclosure relates to a magnetic resonance (MR) scanner and magnetic resonance imaging (MRI) system. The MR scanner includes a superconducting magnet, a superconducting quantum processor, a first cooling system surrounding the superconducting magnet, and a second cooling system surrounding the superconducting quantum processor. The second cooling system is embedded in the first cooling system.

Magnetic resonance scanner with embedded quantum computer

The present disclosure is related to methods and systems for image reconstruction including accelerated forward transformation with an Artificial Neural Network (ANN).

Model-based image reconstruction using analytic models learned by artificial neural networks

Growing community of inventors

Erlangen, Germany

Stefan Popescu