Siemens Aktiengesellschaft

Siemens Healthcare Gmbh

Ludwig Kreischer

Wolfgang Renz

Jianmin Wang

Axel Friedrich

Markus Petsch

Markus Vester

Andreas Schmidt

Jürgen Nistler

Helmut Greim

Stefan Nowak

Herbert Weiler

Aleksandar Juloski

Norbert Rietsch

Klaus Gagneur

Jian Hua Pei

Jian Jun Du

Andreas Grimme

Hans-Peter Hollenbach

Juergen Hagen

Jian Zhong Li

Christian Hetz

Tobias Klemm

Rolf Heinrichs

Christian Streitberger

Martin Rausch

Wolfgang Gösswein

Mathias Peters

Tino Völker

Arne Reykowski

Joachim Gunkel

A magnetic resonance apparatus has a scanner with a superconducting basic field magnet, a gradient coil unit, and a radio-frequency antenna unit, an electronics unit, and a cooling apparatus. The cooling apparatus has a cryostat for cooling the superconducting basic field magnet and a first cooling circuit for cooling the electronics unit and/or the gradient coil unit and/or the radio-frequency antenna unit, and a second cooling circuit for cooling the cryostat.

Magnetic resonance apparatus with a cooling apparatus

In method for operating a magnetic resonance apparatus that has a gradient power amplifier that supplies a voltage to a gradient coil, and a gradient power amplifier control processor that provides control a control signal thereto that predetermines the aforementioned voltage, and a simulation computer that models an operational characteristic of each of the gradient coil the gradient power amplifier, an actual current value of a current fed into the gradient coil by the gradient power amplifier is measured and a target current value of the current fed into the gradient coil by the gradient power amplifier is determined by the simulation computer, using the control signal as an input variable. A fault signal is generated as a function of a determined deviation in the actual current value from the target current value.

Magnetic resonance apparatus and method for the operation thereof

Patient table with control panel

In a system and operating method wherein the system includes a medical apparatus and an operator console, a first input processor is assigned to the operator console and acquires a shutdown command that triggers a shutdown operation of the operator console, and a second input processor is assigned to the medical apparatus and acquires a startup command that triggers a startup operation of the medical device. A first interface forwards the shutdown command from the operator console to the medical apparatus wherein a shutdown operation of the medical apparatus is triggered, and a second interface forwards the startup command from the medical apparatus to the operator console, wherein a startup operation of the operator console is triggered.

System with a medical apparatus, and method for controlling startup and shutdown of the system

A voltage equalization device for equalizing voltage fluctuations in a voltage supply is provided. The voltage supply has an electrical voltage that is as constant as possible. The voltage equalization device has at least one transformer unit which has a primary winding unit and a secondary winding unit and, on one of the two winding units, has at least three or more selection units for switching in or switching out turns of the winding unit. Two adjacent selection units are so arranged in each case as to be separated from one another by a distance having a number of turns. The number of turns between two first adjacent selection units is different from the number of turns between two further adjacent selection units.

Voltage equalization device and a medical imaging device having a voltage equalization device

The invention relates to a support apparatus on which a patient can be supported in a comfortable and secure manner for the preparation for an examination and for the examination, in particular an endorectal biopsy. The support apparatus comprises a sliding apparatus connected to a bearing substructure and is supported in a displaceable manner on the sliding apparatus so that it can be moved partially beyond the substructure connected to the sliding apparatus. The support apparatus also comprises a cutout. The invention also relates to a patient support table comprising a connecting apparatus to connect the patient support table to the support apparatus and serving as a bearing substructure for the support apparatus. A medical device, in particular an MR device, is also disclosed comprising a patient tunnel and the patient support table that can be introduced into the patient tunnel.

Support apparatus and patient support table as well as medical device

A simplify mobile patient support apparatus which is suitable for an examination of a patient by a magnetic resonance tomography system is proposed. A first and second actuation facility and a control facility are used. Depending on the operating state of the patient support apparatus whether is docked with or undocked from the magnetic resonance tomography system, actuation of the first and second actuation facilities results either in the coupling or uncoupling of the patient support apparatus to/from the magnetic resonance tomography system or the raising or lowering of a patient support plate of the patient support apparatus. Essential components for docking or undocking or for the vertical adjustment of the patient support plate are integrated in a hydraulic unit.

Patient support apparatus

A combined positron emission tomography/magnetic resonance imaging apparatus including a positron emission tomography apparatus having at least one radiation detector, and a magnetic resonance imaging apparatus having at least one gradient coil and a radio-frequency antenna device. At least one embodiment of the combined position emission tomography/magnetic resonance imaging apparatus is developed further in that a first molding is provided, whose surface coincides with the inner shell of the at least one gradient coil, and a second molding is provided, whose surface coincides with the outer shell of the radiation detector, the distance between the two shells being virtually constant over the circumference of the shells, and a vacuum seal being arranged in each case along at least a first and a second circumferential line such that a closed cavity is formed between the vacuum seals.

Combined positron emission tomography / magnetic resonance imaging apparatus

A module of a support apparatus () of a medical examination and treatment device, in particular of a magnetic resonance device (), comprises the following features:

Support device and magnetic resonance device having a support device

The present invention discloses a magnetic resonance imaging apparatus for scanning a spine, comprising a body coil for emitting signals, a patient table within the body coil and a spine coil for receiving signals, wherein said spine coil is fixed within said body coil and disposed under said patient table. Said patient table is movable within said body coil by slide rails fitted at the two sides thereof, so as to reduce the length of said spine coil. The cross section of said patient table is in an arched shape, and the cross section of said spine coil is in an arched shape which matches that of said patient table. By using the apparatus of the present invention, since the spine coil is disposed underneath the board of the patient table, the design and production of the board of the patient table are simplified, the number of radio frequency choke coils and radio frequency element units is reduced and so are the costs; also, the space for the patient is increased, so the patient's comfort is improved; and furthermore, the repeated plugging and unplugging of the spine coil, as in the prior art, are avoided so as to reduce the probability of damaging the coil.

Magnetic resonance imaging apparatus for scanning the spine

An illumination device () for illuminating an examination room () of an imaging medical examination device () has illuminants (), which emit light when energized and can be electrically connected to a power source via connecting means (A,B,A, . . .D), at least two of the illuminants () being connected by means of an electrical supply line () and the electrical supply line () having at least one high frequency filter () for reducing the interaction of the supply line () with a high frequency field.

Illumination device and medical imaging and examination device having an illumination device

A radio-frequency reception arrangement for a magnetic resonance apparatus has a number of independent antennas and pre-amplifiers. The number of pre-amplifiers is less than the number of independent antennas. A switching matrix is arranged between the pre-amplifiers and the antennas for selective, signal-dependent connection of the pre-amplifiers to the antennas.

Radio-frequency reception arrangement for a magnetic resonance apparatus

An antenna system for the reception of magnetic resonance signals has at least two resonant individual antennas. The individual antennas are connected to a pre-amplifier via a combination circuit. The combination circuit is fashioned such that signal contributions that can be emitted by the individual antennas exhibit a phase difference of 0&deg; or 180&deg; at the pre-amplifier.

Antenna system for the reception of magnetic resonance signals

An antenna array for magnetic resonance examinations has array elements that are decoupled from each other and that are independent, the array elements being arranged in two adjacent rows. Each array elements is formed by two antenna elements whose respective sensitivity axes reside perpendicular to one another.

Antenna array for magnetic resonance examinations

In a radio-frequency receiver unit for a magnetic resonance apparatus, a reception antenna is connected to an input of a noise-matched field-effect transistor preamplifier with a low input impedance. The reception antenna is connected with a detuning stage. The RF receiver unit has a noise suppression stage that can be activated when the reception antenna is detuned.

Growing community of inventors

Dormitz, Germany

Ludwig Kreischer