Siemens Aktiengesellschaft

Siemens Healthcare Gmbh

Siemens Healthineers Ag

Siemens Aktiengesell Schaft

Jan Bollenbeck

Markus Vester

Stephan Biber

Ralph Oppelt

Stefan Schwarzer

Peter Speier

Robert Rehner

Klaus Pistor

Andre Albsmeier

Wilfried Schnell

Florian Poprawa

Wolfgang Renz

Jianmin Wang

Stephan Kannengiesser

Dieter Ritter

Matthias Fenchel

Rainer Schneider

Juergen Nistler

Ludwig Eberler

Georg Pirkl

Martin Hergt

Martin Hemmerlein

Klaus Porzelt

Philipp Hoecht

Georg Rauh

Sven Heggen

Daniel Evers

Jörg Hüttner

Mario Bacher

Steffen Schröter

Martin Nisznansky

Thomas Wuchenauer

Techniques are disclosed for transferring at least one speech signal of a patient during a magnetic resonance imaging examination, wherein the speech signal is recorded by a speech recording device of a wireless communication device assigned to the patient and transmitted at least as part of a communication signal to a receive device of the magnetic resonance imaging device. The communication signal is a modulated signal or is generated from a modulated signal, and to generate the modulated signal the speech signal is modulated onto a carrier signal. The modulated signal is generated by way of a modulation with reduction of the level of the carrier signal.

Method for transferring at least one speech signal of a patient during a magnetic resonance imaging examination, and magnetic resonance imaging device

A pilot tone signal generator, a magnetic resonance tomograph, a method for transmission of a synchronization signal, and a computer program product are disclosed. The pilot tone signal generator includes a receive unit for receipt of a synchronization signal of a system control unit of a magnetic resonance tomograph. The synchronization signal may include a clock signal, and the pilot tone signal generator is configured to emit a pilot tone signal as a function of the synchronization signal.

Pilot tone signal generator, magnetic resonance tomograph, method for transmission of a synchronization signal and computer program product

A peripheral device for a magnetic resonance tomography unit. The peripheral device includes a first sensor for receiving an electromagnetic data signal from the environment of the peripheral device. The peripheral device is configured to execute signal processing in dependence on the electromagnetic data signal and a frequency of the electromagnetic data signal is greater than a Larmor frequency of the magnetic resonance tomography unit.

Apparatus and method for transferring clock signals from a magnetic resonance tomography unit to a peripheral device

An imaging apparatus has an MRT system with an MR receiving antenna configured to receive a first receive signal containing an MR signal from an object to be examined during an examination period. The imaging apparatus includes a modality for examining the object and/or for acting on the object via mechanical or electromagnetic waves, wherein the modality has an electronic circuit. The imaging apparatus includes an auxiliary antenna arranged and configured to receive a second receive signal containing an interference signal generated by the electronic circuit during the examination period. The imaging apparatus has a processing system configured to suppress interference in the first receive signal based on the first and the second receive signal.

Magnetic resonance tomography with signal interference suppression

A magnetic resonance apparatus includes a scanner, a patient accommodating region, a patient support apparatus which can be moved within the patient accommodating region and a patient communication device. The patient communication device includes at least one communication element which has a radio-frequency transmitter.

Magnetic resonance apparatus having a patient communication unit and a method for transmitting at least one communication signal

The disclosure relates to a method, a computer program, a data storage medium, a system, and a local-coil apparatus for a magnetic resonance tomography MRT unit having at least one receive coil configured to receive an MRT signal and a receive amplifier apparatus having at least one output amplifier unit and configured to amplify the received MRT signal in order to drive an analog-to-digital converter ADC. The at least one output amplifier unit is configured to amplify the MRT signal, below a signal-level threshold value, by a high gain, and, above the signal-level threshold value, by a low gain. The receive amplifier apparatus is configured to change a bias current of the at least one output amplifier unit according to a defined MRT signal level.

Local-coil apparatus for a magnetic resonance tomography unit and systems and methods thereof

A receiving device for two signals having different center frequencies. The receiving device includes a sampler. A first signal of the two signals and a second signal of the two signals are supplied to a first signal-input of the sampler in a time multiplex. The sampler digitizes the first signal and the second signal at a sampling rate. The receiving device also includes a frequency mirroring device that mirrors the second digital signal in a frequency domain about a quarter of the sampling rate.

Receiving device for frequency-multiplexed signals

A transmitting device and a method for transmitting two high frequency signals for a magnetic resonance tomograph are provided. The transmitting device includes a shielded balanced transmission line, a first signal driver, and a second signal driver. The first signal driver and the second signal driver feed the first high frequency signal to a first conductor and the second high frequency signal to a second conductor of the balanced transmission line. A shielding of the balanced transmission line has an electrical connection to a common ground potential for the first signal driver and the second signal driver.

Device and method for transmitting signals over a shielded balanced line

A device for recovering a temporal reference in a free-running magnetic resonance tomography (MRT) receive chain includes a time reference encoder and a time reference decoder. The time reference encoder is configured to generate a modulation signal as a function of a reference clock, where the modulation signal is configured for a correlation with a temporal resolution less than a maximum predetermined phase deviation and a maximum that may clearly be identified. The time reference decoder is configured to receive, via the first signal input, a receive signal as a function of the modulation signal, perform a correlation with a reference signal, and generate a signal as a function of a temporal reference of the modulation signal in the receive signal in relation to the reference signal.

Device and method for recovering a temporal reference in free-running MR receive chains

A connecting device for establishing a data link between a docking device provided at a part of a magnetic resonance scanner, and a patient support, with at least one slot for a local coil, which can be docked to the docking device, has a first data transmission device on the patient support side, which interacts with a second data transmission device on the docking device side in order to establish the data link in the docked state. The data transmission devices each have at least one communication device designed for wireless near field communication.

Magnetic resonance device, patient support and method for data transmission using a connecting device for establishing a data link between a docking device and a patient support

The disclosure relates to a local coil with a device for providing a first mixed frequency signal and a second mixed frequency signal by a first auxiliary frequency signal and a second auxiliary frequency signal. The device has an auxiliary mixer configured to generate the second mixed frequency signal from the first auxiliary frequency signal and the second auxiliary frequency signal. The local coil has a signal input including a first signal connection to the device. The local coil is configured to jointly receive the first auxiliary frequency signal and the second auxiliary frequency signal by way of the signal input and supply them to the device by way of the first signal connection.

Local coil with frequency converter

A transmission apparatus for transmitting an intermediate frequency signal and an oscillator signal for mixing down the intermediate frequency signal, a magnetic resonance tomograph with a local coil, a receive unit, and a transmission apparatus are provided. The transmission apparatus has a symmetrical transmission line for transmission of the oscillator signal and the intermediate frequency signal and a symmetrizing element for adaptation of an unsymmetrical signal source and/or signal sink to the symmetrical transmission line. The symmetrizing element has only ferrite-free inductances. The local coil and the receive unit are connected for signaling purposes via the transmission apparatus.

Transmission of magnetic resonance signals by differential cable routing

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.

Signal transmitter for pilot tone navigation

A receiver assembly of a magnetic resonance (MR) system for generating MR recordings of an examination object includes a plurality of reception channels for receiving and amplifying MR signals from reception coils of the MR system connected therewith. A calibration data memory for storing calibration data for the plurality of reception channels is arranged on the receiver assembly. The receiver assembly includes a data link for transmitting the calibration data to the MR system.

Receiver assembly of a magnetic resonance imaging system

A method for generating motion information for an at least partially moving examination region includes outputting at least one first excitation signal with a first frequency band. The first excitation signal is picked up with a receive coil arrangement of a magnetic resonance system. The at least one coil of the receive coil arrangement is configured to pick up a receive frequency band that includes the first frequency band. At least one item of motion information for the examination region is determined from the picked up first excitation signal.

Growing community of inventors

Eggolsheim, Germany

Jan Bollenbeck