Abstract: A magnetic resonance tomography system with a sensor for detecting spikes and with a gradient coil. Nuclear spins of an object under observation are excited by a magnetic alternating field of the magnetic resonance tomography system. A gradient field is generated by the magnetic resonance tomography system using the gradient coil. A magnetic resonance signal is acquired using a receiving antenna of the magnetic resonance tomography system and an interference signal using the sensor. From the magnetic resonance signal an image is reconstructed as a function of the acquired interference signal of the sensor.

Abstract: Systems and methods for ascertaining an item of movement information concerning movement of an object under examination during a magnetic resonance scan. A pilot tone signal generator of a magnetic resonance apparatus transmits a pilot tone signal. At least one first coil element of the magnetic resonance apparatus receives the pilot tone signal. The pilot tone signal received by the at least one first coil element is in each case a first pilot tone received signal. At least one second coil element of the magnetic resonance apparatus receives the pilot tone signal. The pilot tone signal received by the at least one second coil element is in each case a second pilot tone received signal. The at least one first pilot tone received signal is corrected with the aid of the at least one second pilot tone received signal. The item of movement information for the object under examination is ascertained using the corrected at least one first pilot tone received signal.

Abstract: A method for performing a magnetic resonance measurement includes selecting a first set of coil elements from a plurality of coil elements and a second set of coil elements from the plurality of coil elements, and performing a magnetic resonance measurement. During the magnetic resonance measurement with the first set of coil elements and the second set of coil elements, magnetic resonance signals and pilot tone signals are received. The method includes ascertaining at least one magnetic resonance image solely with the assistance of magnetic resonance signals received with the first set of coil elements during performance of the magnetic resonance measurement, and ascertaining patient movement information solely with the assistance of pilot tone signals received with the second set of coil elements during performance of the magnetic resonance measurement. The first set of coil elements is not congruent with the second set of coil elements.

Abstract: 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.

Abstract: The disclosure relates to a method for monitoring a motion of a subject, as well as to a corresponding system and computer program product. As part of the method, a monitoring signal is emitted towards a corresponding receiver. The motion of the subject is then detected based on a change in the received monitoring signal. Therein, the monitoring signal is emitted using a spread-spectrum technique and/or using an M-to-N and multi-antenna emitter-receiver system with a set of M transmitting antennas and a set of N receiving antennas.

Abstract: A power supply facility for supplying a magnetic resonance facility with electrical power includes a control facility, a network connection to a power network, and an electrical energy store, such as a battery. The network connection is configured for an installed power level that is lower than a maximum power level that may be demanded by the magnetic resonance facility. The control facility is configured, in the event that a power demand of the magnetic resonance facility exceeds the installed power, to provide the power from the network connection and the energy store.

Abstract: To operate a magnetic resonance tomography system, first analysis signals are received by a main receive antenna and an auxiliary receive antenna. Based thereon, a first interference source and first weighting factors are determined. Second analysis signals are received by the main receive antenna and the auxiliary receive antenna and in accordance with the first weighting factors, a combination of the second analysis signals is created. Based thereon, a second interference source is determined. Second weighting factors are determined in order to suppress the influence of the first interference source and an influence of the second interference source. A magnetic resonance signal is received during an examination phase by the main receive antenna and an interference signal by the auxiliary receive antenna. An interference-suppressed magnetic resonance signal is created as a combination of the magnetic resonance signal and the interference signals depending on the second weighting factors.

Abstract: A method of operating a magnetic resonance imaging (MRI) apparatus includes exciting a body coil of the MRI apparatus to emit a radio-frequency signal, determining a center frequency of a resonance curve of the body coil, and calculating a magnet target frequency based on the determined center frequency. A magnet is ramped to the magnet target frequency.

Abstract: 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.

Abstract: A magnetic resonance system has an air suction apparatus configured and arranged so as to suck air exhaled by a patient examined by the MR system. A method for operating the MR system is also provided, with which air exhaled by a patient examined by the MR system is sucked in.

Abstract: A method of operating a magnetic resonance imaging (MRI) apparatus includes exciting a body coil of the MRI apparatus to emit a radio-frequency signal, determining a center frequency of a resonance curve of the body coil, and calculating a magnet target frequency based on the determined center frequency. A magnet is ramped to the magnet target frequency.

Abstract: 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.

Abstract: A magnetic resonance apparatus with a patient positioning apparatus is disclosed herein. The patient positioning apparatus includes a patient table for positioning a patient on an upper side of the patient table and a table positioning structure for movably positioning the patient table. The patient positioning apparatus is configured to position the patient by way of a movement of the patient table relative to the table positioning structure in the magnetic resonance apparatus, wherein the table positioning structure includes at least one spring element for sprung positioning of the patient table on the table positioning structure.

Abstract: A magnetic resonance tomography system has an interference suppression transmitter and an interference suppression antenna. The interference suppression transmitter is configured to output an interference suppression signal via the interference suppression antenna as a function of a transmission interference suppression parameter determined from a patient property. In a predetermined region of an environment of the magnetic resonance tomography system, a field strength of the excitation pulse is reduced by destructive interference.

Abstract: A magnetic resonance apparatus may include at least one sensor and a controller. The magnetic resonance apparatus is positionable in an examination room. A spatial location of the magnetic resonance apparatus in the examination room can be determined using the sensor. In a method for supporting an adjustment of a shim parameter of a magnetic resonance apparatus, a current spatial location of the magnetic resonance apparatus in an examination room is determined using the sensor, and a shim parameter of at least one shim element of the magnetic resonance apparatus is determined based on the current spatial location of the magnetic resonance apparatus and information of a magnetic field database. The magnetic field database may include information about a spatial location of the magnetic resonance apparatus and also magnetic field data correlated with the spatial location.

Abstract: A gradient coil unit including a first conductor structure arranged within a first form and a second conductor structure arranged within a second form, wherein the first conductor structure and the second conductor structure are designed together to generate a magnetic field gradient in a first direction, the first form and the second form are arranged separately, opposite each other, and divided by a hollow space, and the first form has a segment of a circle as a cross section.

Abstract: A magnetic resonance tomography unit includes a transmitter, a transmission monitoring device for monitoring an excitation signal from the transmitter, and a plurality of transmit antennas. The magnetic resonance tomography unit also includes a switching device configured to bring the transmission monitoring device selectively into a signal connection to one transmit antenna of the plurality of transmit antennas. A method for operating the magnetic resonance tomography unit is also provided.

Abstract: 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.

Abstract: A magnetic resonance device having a main magnet unit with a cylindrical patient aperture. A gradient connection plate for a gradient coil arrangement surrounds the patient aperture. A cladding arrangement with at least one cladding part outwardly delimits the main magnet unit.

Abstract: The disclosure relates to a magnetic resonance tomography system and to a method for operation of the magnetic resonance tomography system. The magnetic resonance tomography system has a magnetic unit, which is configured to change a homogeneous magnetic field B0 with a magnetic field strength, which may vary between a first predetermined value on exciting nuclear spins and a second predetermined value on receiving magnetic resonance signals, in a measuring volume in a short, predetermined time, controlled by the magnetic resonance tomography system.