A magnetic resonance imaging apparatus comprises a scanning unit for performing a pulse sequence PS including a MT (Magnetization Transfer) pulse b for lessening signals from the cerebral parenchyma (white matter and gray matter). The scanning unit performs the pulse sequence PS in periods of time P1 and P3 in the pulse sequence PS so that the MT pulse b is applied every repetition time TR, while it performs the pulse sequence PS in a period of time P2 in the pulse sequence PS so that no MT pulse b is applied.

In a method for providing a selection of at least one protocol parameter from a plurality of protocol parameters for a user-defined protocol parameter setting of at least one magnetic resonance protocol for a magnetic resonance examination on a patient using a magnetic resonance device, a selection mode and a setting mode can be performed. In the selection mode, stored user-dependent parameter information can be provided and a selection of the at least one protocol parameter for a protocol parameter setting can be determined based on the stored user-dependent parameter information. In the setting mode, the determined selection of the at least one protocol parameter can be provided to the user via a user interface.

An RF coil assembly for use in a Magnetic Resonance Imaging scanner incorporates sound absorbing material in its construction for the purpose of attenuating the sound perceived by a patient lying inside the RF coil. Unlike a conventional RF coil assembly in which rigid components are used to support the coil within the magnet bore, the quiet RF coil assembly is constructed without rigid support components. In one embodiment, open cell foam may be used to support the RF coil components and the entire assembly is wrapped in a. flexible cloth-like material.

A trajectory is determined for inserting a patient into an MR scanner. An avatar representing specific body dimensions is provided. The avatar includes location information relating to an implant. A spatial magnetic field gradient data set relating to the scanner is provided. An avatar pose at a starting point of the trajectory is defined, and a course for the trajectory is provided. For several points on the trajectory, the corresponding magnetic field value are determined by combining the spatial magnetic field gradient data set with the avatar pose. The trajectory and/or the avatar pose are determined so that the at least one implant only passes regions within the MR scanner that are below a predetermined threshold value concerning the magnetic field gradient.

The present disclosure directs to a system and method for configuring a pulse sequence in MRI. The method may include obtaining a preliminary gradient pulse configuration, wherein the preliminary gradient pulse configuration relates to a portion of a pulse sequence to be implemented by one or more coils of an MR scanner, the pulse sequence including a plurality of gradient pulses. The method may also include determining a global peripheral nerve stimulation (PNS) value of the preliminary gradient pulse configuration according to a PNS model. The method may further include determining a target gradient pulse configuration based at least in part on the preliminary gradient pulse configuration, the global PNS value, and a PNS threshold.

A system and method is provided for assessing Peripheral Nerve Stimulation (PNS). The system receives an imaging pulse sequence to be applied to a region of interest (ROI) of a subject arranged in the imaging system, where the imaging pulse sequence identifies coil parameters related to at least one coil. The system obtains a first model including a plurality of tissue types and corresponding electromagnetic properties in the ROI. The system then obtains a second model indicating location, orientation, and/or physiological properties of one or more nerve tracks in the ROI. The system estimates a plurality of PNS thresholds in the ROI caused by the imaging pulse sequence applied in the imaging system using the first model, the second model, a nerve membrane model, and the coil parameters.

A magnetic resonance imaging apparatus according to an embodiment includes a processor and a memory. The memory stores processor-executable instructions that, when executed by the processor, cause the processor to receive an operation of setting an application condition concerning a local excitation pulse that is a radio frequency (RF) pulse for local excitation applied to a local region different from an imaging region; generate a waveform of the local excitation pulse based on the application condition; and set an imaging condition such that an index value calculated from the waveform of the local excitation pulse does not exceed a limit value.

An RF-safe interventional or a non-interventional instrument is used during an MR imaging or MR examination of an examination object (A). The instrument is made of or includes at least one longitudinal or elongated electrically conductive element (1, 3), for example, in the form of a conductor or wire or line for feeding electrical signals, or in the form of the instrument itself or a component or a part thereof, which is not provided for feeding electrical signals but is nevertheless electrically conductive. All such elements are subject to RF common mode currents which are induced in the element when the instrument or element is exposed to an RF/MR excitation field generated during MR imaging or MR examination by an MR imaging apparatus. The instrument is made RF-safe by increasing the energy loss of an oscillator which is represented by the conductor (1, 3) by a damping element (4; 6) in order to prevent or limit RF heating of the examination object (A) at or surrounding the conductor (1, 3).

In a method to determine a complete parameter of a pulse sequence composed of multiple pulse sequence modules for operating a magnetic resonance examination apparatus parameter information of the pulse sequence modules is stored in a memory in leaves and nodes of a tree structure, and the parameter information stored in the tree structure is evaluated to determine the complete parameter of the pulse sequence.

In an image creating device, an obtainer obtains the phase of a magnetic resonance signal generated from a target object upon application of a static magnetic field and a high-frequency magnetic field to the target object (step S102). A calculator calculates a change level of the obtained phase per a predetermined distance in a direction of the static magnetic field (step S103). A generator generates an image representing a positional distribution of a parameter depending on the calculated change level (step S106).