The disclosure relates to techniques for determining an acquisition order identified with an acquired magnetic resonance data set, which comprises a total number of slices, using a simultaneous multislice technique.

Method for operating an MR device to acquire MR data slices, wherein in a sequence section of an MR sequence, MR signals of at least two slices are measured simultaneously, and an acquisition order having an association of slices to respective sequence sections of a repetition sequence covering all slices of an associated concatenation is determined using an ordering rule. A crosstalk criterion is evaluated for the acquisition order by checking whether a first slice acquired in a last sequence section of the repetition sequence is directly adjacent to a second slice acquired in a first sequence section of the same repetition sequence. If the crosstalk criterion is fulfilled, the acquisition order is adapted according to an adaptation rule such that a larger temporal acquisition distance between the acquisition of the first and the second slices is provided.

A technology is provided for multi-component and/or multi-configuration imaging with coding, signal composition, signal model, structure model, structure model learning, decoding, reconstruction, performance prediction and performance enhancement. A magnetic resonance imaging example comprises acquiring signal samples in accordance with a coding scheme and a k-space sampling scheme, identifying a structure model in a data assembly formed using an extraction operation, and generating a result consistent with both the acquired signal samples and the identified structure model.

A method for NMR measurements on borehole materials, e.g., sidewall cores, is based on performing a standard measurement in substantially homogeneous magnetic fields with a sensitivity volume covering an entire sample and a measurement on a fragment of the sample (local measurement), the fragment having a predetermined volume independent of the irregularities of the sample shape (e.g., irregular shaped edges). The fragment of the sample is selected using a switchable static magnetic field gradient or a localized radio-frequency magnetic field. The homogeneous and the local measurement data are processed jointly to obtain volume normalized NMR relaxation data (in porosity units), the processing also using a calibration sample data. A measurement apparatus with an automated sample transfer can be used to implement the method in order to perform high-throughput NMR relaxation measurements that do not require independent measurement of the sample volume.

The present disclosure provides a system for MRI. The system may obtain a plurality of auxiliary signals and a plurality of imaging signals collected by applying an MRI pulse sequence simultaneously to a plurality of slice locations of a subject. For each of at least one target slice location of the plurality of slice locations, the system may generate at least one target image of the target slice location based on the plurality of auxiliary signals and the plurality of imaging signals. During the application of the MRI pulse sequence, phase modulation may be applied to at least one of the plurality of slice locations so that the plurality of slice locations have different phases during the readout of at least one of the plurality of imaging signals.

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.

Methods and systems for processing a digital magnetic resonance (MR) image volume in an image data set using intensity standardization to provide standardized MR image slices are described which generally involve determining an image volume scaling factor to align an image volume landmark of a volume histogram of the digital MR image volume with a reference volume landmark of a reference histogram of a reference image volume; and scaling intensity values of the digital MR image volume based on the image volume scaling factor to generate a scaled digital MR image volume. Methods and systems are also described for generating standardized image slices that can be used in various MR image processing methodologies such as image segmentation and object detection.

A method for determining a saturation pulse for suppressing signals from unwanted areas in the context of acquiring measurement data from a target volume of an object under examination by means of a magnetic resonance system, includes: loading the characteristics of the unwanted areas from which signals are to be suppressed; determining area saturation pulses for signal suppression in each of the unwanted areas; and determining a saturation pulse for signal suppression in all the unwanted areas on the basis of the area saturation pulses determined.

A magnetic resonance imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry sets a pulse sequence to collect plural echo signals by application of a refocusing pulse more than once after application of an excitation pulse once, and collects data on plural slices that are parallel to each other by executing the pulse sequence more than once. The processing circuitry sets the pulse sequence such that a slice thickness for the refocusing pulse becomes larger than a slice thickness for the excitation pulse, and collects the data on the plural slices by executing the pulse sequence without consecutively collecting data on adjacent ones of the plural slices.

Systems and methods for MRI are provided. The methods may include for each slice of a plurality of slices of a subject to be scanned, determining a plurality of radiofrequency (RF) parameters, the plurality of RF parameters including at least one channel parameter corresponding to each of a plurality of channels; determining a slice group based at least in part on the RF parameters corresponding to the plurality of slices, the slice group including at least two slices selected from the plurality of slices; and directing at least a portion of the plurality of channels to excite the slice group based on RF parameters corresponding to the slice group.