A method for simultaneous transmission of at least two high-frequency transmission signals via a common high-frequency line includes providing at least two input signals at respective inlet ports. The input signals are signals of a same carrier frequency. From the input signals, respective transmission signals are provided with different transmission frequencies from each other and from the carrier frequency by mixing the input signals using one frequency mixer each. The frequency mixers are supplied with respective mixer oscillator signals. The transmission signals are transmitted via the common high-frequency line. The mixer oscillator signals are provided from a same oscillator signal.

An automatic protocolling system and methods involving a processor operable by way of a set of executable instructions storable in relation to a nontransient memory device, the set of executable instructions configuring the processor to: receive information relating to an initial protocol comprising an initial ordering of a plurality of sequences, the information comprising data relating to an interaction extent value of at least one of an imaging system and a patient as a function of time corresponding to each sequence in the plurality of sequences, the data relating to a time-integrated effect of each sequence in the plurality of sequences; and dynamically determine an alternative protocol comprising an alternative ordering of the plurality of sequences based on the time-integrated effect, whereby an alternative protocol is provided.

Systems and Methods for determining a position of an object introduced into a body. An RF pilot tone is generated and is radiated into the body. Response signals modulated by the radiating into the body are received by a plurality of MRI receiver coils arranged spatially distributed outside the body and are converted into respective measurement signals. From the measurement signals, the position of the object is determined.

A magnetic resonance transmit and/or receive antenna system configured for being used in combination with a magnetic resonance radiotherapy system. The antenna system can include at least one antenna for transmitting and/or receiving radio frequency signals and a cover enclosing the antenna components. The antenna can include antenna components and the cover can include a spatially varying thickness and/or density towards an outer edge of the surface and/or next to an antenna component as to make the change in radiation attenuation between the enclosing cover compared to the antenna component and/or air more gradual.

An exemplary embodiment of the present disclosure provides an MRI-compatible robot comprising one or more fiducial markers, a first planar stage comprising a first joint configured to receive a surgical tool and a first mechanism configured to move the surgical tool, a second planar stage comprising a second joint configured to receive the surgical tool and a second mechanism configured to move the surgical tool, and wherein the second planar stage is generally parallel with the first planar stage.

The disclosure relates to simulating an electrical stimulation during an examination of an examination object, in which the examination object is examined in a MR system to create a MR image using an imaging sequence, where a time characteristic of at least one magnetic field gradient used during the imaging sequence is determined, a time derivative of the time characteristic of the at least one magnetic field gradient is determined, and change time points at which the value of the time derivative changes are determined. The simulation of the electrical stimulation for the imaging sequence is performed, wherein the simulation is restricted to the determined change time points.

A method is for performing an angiographic measurement of a main measurement region of a patient via a magnetic resonance system. An embodiment of the method includes performing at least one overview measurement to generate overview-measurement data; defining, using the overview-measurement data, the main measurement region and a first measurement region, the first measurement region differing from the main measurement region; performing a first time-resolved measurement in the first measurement region defined to generate first time-resolved measurement data; detecting an injected contrast agent bolus in the first measurement region using the first time-resolved measurement data; determining a flow rate of the injected contrast agent bolus detected; setting at least one measurement parameter of the angiographic measurement according to the flow rate determined; and performing the angiographic measurement of the main measurement region of the patient in the magnetic resonance system using the at least one measurement parameter set.

A device and a method for calibrating the coordinate system of imaging systems having a tracking system prior or during image data acquisition, e.g. by way of magnetic resonance tomography.

A device and a method for calibrating the coordinate system of imaging systems having a tracking system prior or during image data acquisition, e.g. by way of magnetic resonance tomography.

Various examples provide devices, systems, and techniques for dissipating electromagnetic interference (EMI) induced energy in a medical device. In one example, an implantable electronic device includes a housing, at least one connector coupled to the housing and configured to at least one of receive first electrical signals or transmit second electrical signals, and an integrated circuit disposed within the housing, wherein the integrated circuit comprises at least one clamp stage coupled to a supply line of the integrated circuit, and wherein the at least one clamp stage is configured to dissipate magnetic resonance imaging (MRI) induced energy from the supply line in response to at least one of a voltage or a current on the supply line exceeding a respective predetermined voltage threshold value or a current threshold value.