Abstract: According to one embodiment, an RF coil storage device stores an RF coil device which receives a magnetic resonance signal from an object with a coil element in magnetic resonance imaging. This RF coil storage device includes a storage rack on which the RF coil device is placed, and processing circuitry configured to acquire an index signal which is used for determining presence/absence of a failure, from the RF coil device placed on the storage rack.

Abstract: An MRI apparatus includes a processing circuitry that executes a pulse sequence by which a data acquiring process is repeatedly performed multiple times where data is acquired every time each of waiting periods has elapsed since a tag pulse used for labeling a fluid flowing into an image taking region of a patient is applied, that acquires, at at least one time among the multiple times, data corresponding to one region by using a three-dimensional sequence, out of three-dimensional data acquired while being divided into regions, during each of the data acquiring processes corresponding to a first waiting period among the waiting periods, and that acquires data allocated to the one time by using a two-dimensional sequence, out of a slice of two-dimensional data corresponding to the entire three-dimensional data, during each of the data acquiring processes corresponding to a second waiting period different from the first waiting period.

Abstract: A method of characterizing a fluid flow by an alternating magnetic field flow meter, comprising determining a flow rate of a fluid flowing through a conduit by generating a first magnetic field to move a magnetic token along a direction of a flow path of a fluid flowing through a conduit, detecting a first electrical signal based on the movement of the magnetic token, generating a second magnetic field to move the magnetic token opposite to the direction of the flow path, detecting a second electrical signal based on the movement of the magnetic token, and determining a conductivity of the fluid flowing through the conduit by generating a current along the flow path and detecting a third electrical signal based on the current generated along the flow path, and determining a conductivity measurement of the fluid flow based on the detected third electrical signal.

Abstract: The present invention provides novel methods of accurately and efficiently reconstructing parameter maps in MRI data. In certain embodiments, the methods have reduced data acquisition time or improved spatial resolution when compared to methods standard in the art. In other embodiments, the methods have reduced acquisition and reconstruction time when compared to other acceleration methods in the art in parametric mapping. In other embodiments, the methods are less susceptible to influence of eddy currents when compared to other acceleration methods in the art in parametric mapping.

Abstract: Magnetic resonance imaging (MRI) systems and methods using adiabatic tip-down and matched adiabatic flip-back pulses are disclosed. According to an aspect, a system includes a signal generator configured to generate a pulse sequence for on-resonance magnetization transfer preparation. The pulse sequence includes an adiabatic tip-down pulse and a matched adiabatic flip-back pulse for separating spins in a mobile spin pool from spins in a bound spin pool of an anatomical region of interest for imaging. The system includes radio frequency (RF) coils configured to transmit RF pulses in response to the pulse sequence and to acquire RF data in response to transmission of the RF pulses. Further, the system includes a processing system configured to process the RF data to provide a display image indicating different tissue types with discrimination.

Abstract: In a magnetic resonance imaging apparatus and a method for generating magnetic resonance image data of a field of view of an examination object, magnetic resonance raw data are acquired by preferably different transverse magnetizations being excited in at least one sub-volume of a navigator volume and at least one sub-volume of an image volume, and are used for position determination and for imaging. These preferably different transverse magnetizations are simultaneously present in at least one period of the scan.

Abstract: It is an object of the invention to improve MRI based treatment, especially MRI based radiotherapy. This object is achieved by a method for calibrating a magnetic resonance imaging (MRI) phantom having an expected geometry and comprising at least one MRI detectable part with a position within the geometry which is known with a geometric inaccuracy. The method comprises the following steps: step 1: placing the phantom at a predetermined location in a magnetic resonance system such that the MRI detectable part is within a symmetry plane of a gradient system of the magnetic resonance imaging system and; step 2: acquiring an MRI image of the MRI detectable part of the phantom by means of a first sequence, wherein the MRI image comprises multiple slices; step 3: determining the geometric inaccuracy of the MRI detectable part of the MRI phantom based on the position and the representation of the part in the MRI image.

Abstract: A method for operating a nuclear magnetic flowmeter for determining the flow of a multi-phase medium flowing through a measuring tube that is suitable for media exhibiting “phase slip” with which the characterization of the gaseous phase is simplified, is achieved by a pulse spoiling the magnetization at least in the direction of the magnetic field or a pulse sequence spoiling the magnetization in the direction of the magnetic field being emitted by a coil-shaped antenna, particularly in combination with dephasing gradients, and then, after a waiting time tW, a nuclear magnetic measurement is carried out in that the medium is excited with excitation pulses by the coil-shaped antenna and the measuring signals generated by the excitation in the medium are detected.

Abstract: The embodiments disclosed herein relate to a method for generating time-resolved images of an examination object, which executes a cyclical movement, and to a magnetic resonance device, and a computer program product herefor. According to a first aspect, at least one spatial magnetization pattern with spatial magnetization differences is generated during a magnetization of the examination object. Furthermore, magnetic resonance signals of the examination object are acquired after generating the spatial magnetization pattern throughout at least one cycle of the cyclical movement. At least one k-space is undersampled here during the acquisition of the magnetic resonance signals. Time-resolved images are generated based on the acquired magnetic resonance signals.

Abstract: A magnetic resonance imaging apparatus includes a radio frequency (RF) controller configured to, during a repetition time (TR) period among TR periods, apply at least one RF pulse corresponding to a first slice to an object, and apply a navigator RF pulse corresponding to a second slice adjacent to the first slice to the object, a data obtainer configured to, during the TR period, obtain first k-space data corresponding to the applied at least one RF pulse, and obtain second k-space data corresponding to the applied navigator RF pulse, and an image processor configured to generate navigator images, based on pieces of second k-space data that are obtained during the TR periods, the pieces comprising the second k-space obtained during the TR period, correct the first k-space data, based on the navigator images, and generate a magnetic resonance image of the first slice, based on the corrected first k-space data.

Abstract: A multiphase flowmeter for detection of fluid flow by monitoring of vortex frequency or perturbation time of flight. The flowmeter includes a bluff body to facilitate formation of vortices during a consistent phase of a flowing fluid. Thus, monitoring frequency of the vortices may be employed to ascertain flowrate. Further, the bluff body may also facilitate formation of perturbations during transitioning phase of the fluid and include perturbation sensors at multiple known locations along the flow-path. Thus, analysis of perturbation detection times at the different locations may be used to ascertain flowrate even in the absence of vortices.

Abstract: A method for operating a nuclear-magnetic flowmeter in which, when determining a velocity of the medium through a measuring tube, the dependency on properties or the state of a medium is at least reduced. The method exciting a first volume of the magnetized medium flowing at a first velocity within a first measuring section to nuclear-magnetic resonances and a first signal sequence is formed characterizing the nuclear-magnetic resonances of the medium in the first volume, and then, exciting a second volume of the magnetized medium flowing at a second velocity within the first measuring section is excited to nuclear-magnetic resonances and a second signal sequence is formed characterizing the nuclear-magnetic resonances of the medium in the second volume. A quotient sequence is determined from each of the first and second signal sequences, and the first velocity and/or the second velocity is/are determined using the quotient sequence.

Abstract: An magnetic resonance imaging (MRI) apparatus and a method of obtaining a magnetic resonance (MR) image are provided. The MRI apparatus includes a processor that obtains k-space data including information on a high frequency region and a low frequency region, and corresponding to a first echo time within a single repetition time (TR), obtains second k-space data including information on at least a part of the low frequency region and corresponding to a second echo time within the single TR, and generating a plurality of reconstructed images having different contrasts based on the first k-space data and the second k-space data.

Abstract: System and method for analyzing changes in a fluid flowing through a conduit, including defining at least one coordinate within said conduit, said conduit having a first plurality of slices, receiving at least one known value for at least one property of the fluid, measuring said fluid using magnetic resonance, determining at least one image from the measured fluid, the at least one image having a second plurality of slices for said at least one coordinate, determining a second set of values for said at least one property of said fluid, comparing the first set of values and second set of values for said at least one property to determine a difference value, checking deviation of the determined difference from a predetermined value for said fluid, and issuing an alert if the deviation is not substantially zero.

Abstract: Systems and methods for simultaneous multislice (“SMS”} magnetic resonance imaging (“MRI”}, in which a random blip gradient encoding scheme is utilized to impart a different phase to each of a plurality of different slice locations. Because of the random blip gradient encoding, the amount of the imparted phase is randomized for each phase encoding step in a Cartesian k-space trajectory. This data acquisition strategy leads to incoherent aliasing artifacts across the simultaneously excited slices. Images of the individual slices can be reconstructed using a compressed sensing framework.

Abstract: A system and method for sampling k-space is provided that substantially simplifies the demands placed on the clinician to select and balance the tradeoffs of a particular selected sampling methodology. In particular, the present invention provides particularly advantageous sampling methodologies that simplify the selection of a particular k-space sampling methodology and, furthermore, the tradeoffs within a particular sampling methodology.

Abstract: A method for determining an arteriovascular condition of a subject having an arterial blood flow is shown. The method involves determining a temporal progression of an instantaneous blood flow condition of the arterial blood flow as well as deriving a slew rate of the temporal progression during an increase of the temporal progression. In addition, an arteriovascular condition indicator device is shown, which comprises: an input for receiving an input signal representing an instantaneous arterial blood flow condition of a subject and a slew rate monitor connected to the input. A corresponding control device for providing an activation signal is also shown. The control device comprises a maximum detector connected to the slew rate monitor. A method for stimulation of arteriogenesis is also shown, wherein a temporal progression of an instantaneous blood flow condition is monitored, a slew rate of the temporal progression is derived, and the maximum of the slew rate is determined.

Abstract: A magnetic resonance imaging apparatus includes a processor and a memory. The memory stores processor-executable instructions that, when executed by the processor, cause the processor to receive a breath holdable time of a subject and adjust a parameter value of an imaging parameter included in imaging condition for imaging of the subject, according to the breath holdable time.

Abstract: Techniques and systems for non-contrast enhanced magnetic resonance angiography and venography (MRAV) are described. For example, within one cardiac cycle of a subject, a single shot acquisition of non-suppressed arterial MR signals and a single shot acquisition of non-suppressed venous MR signals are employed. Radio frequency (RF) saturation pulses may be applied to one or more slabs such that MR signals indicative of venous blood that flows into the arterial imaging slice are substantially suppressed and MR signals indicative of arterial blood that flows in the venous imaging slice are substantially suppressed. The RF saturation pulses and the single shot acquisitions may be timed such that one or more of the single shot acquisitions occur during substantially steady state inflow of blood into the respective imaging slice. In this manner, k-space data may be acquired from arterial specific and venous specific imaging slices occurring within a single cardiac cycle.

Abstract: Method and apparatus are used to display a slice of tomographic image in a three-dimensional (3D) medical image, for the purpose of achieving better recognition of a vascular structure contained in the slice without degrading spatial resolution of the slice. An example method includes identifying a slice of interest in a 3D medical image representing an anatomical part including a blood vessel; and projecting along a slice axis direction orthogonal to the slice of interest for a region in the 3D medical image including the slice and wider than the slice.

Abstract: Systems and methods for generating a medical image of a subject that includes functional information. First, two medical images are acquired. One is weighted based on functional information reflecting physiological functions of the subject and the other weighted based on anatomic information of the subject. A difference image between the two images are generated. By subjecting the difference image and the second image to a localized kernel, a local similarity image is generated. Using the local similarity image, an improved difference image is generated. Lastly, by subtracting the improved difference image from the first image, an enhanced medical image that retains the functional information reflecting physiological functions of the subject is generated.

Abstract: Systems and methods for acquiring magnetic resonance images that accurately depict vascular calcifications, or other objects composed of magnetic susceptibility-shifted substances, in a subject are provided. The images are generally acquired using a pulse sequence that is designed to reduce physiological motion-induced artifacts and to mitigate chemical-shift artifacts from water-fat boundaries. Advantageously, the MRI technique described here suppresses chemical-shift artifacts without significantly reducing the signal intensity from fatty tissues, and thereby allows for more reliable visualization of vascular calcifications.

Abstract: A method for operating a nuclear magnetic flowmeter for determining the flow of a slug flow medium flowing through a measuring tube, with which “tuning” parameters and “matching” parameters are set for a slug zone a film zone, reflected power is measured over time. If the reflected power in a system set for slug zone is low for the slug zone and high for the film zone and if the reflected power in a system set for film zone is low for the film zone and high for the slug zone, relative dwell time of the slug zone and the film zone in the RF coil and the relative frequency of the slug zones and film zones in the flowing medium are determined using the reflected power with a jump in the value of the reflected power from a high value to a lower value used to trigger measurement initiation.

Abstract: This shear wave imaging method, for collecting information on a target region (R) of a soft solid (S), comprises at least the steps a) of generating at least one shear wave (SW) in the target region, and b) of detecting a propagation pattern of the shear wave in the target region. Step a) is realized by applying to particles of the target region (R) some Lorentz forces resulting from an electric field (E) and from a magnetic field (B). At least one of the electric field (E) and the magnetic field (B) is variable in time, with a central frequency (fo) between 1 Hz and 10 kHz. Alternatively, both the electric and magnetic fields (E, B) are variable in time, with a central difference frequency (?fo) between 1 Hz and 10 kHz. The shear wave imaging installation comprises a first system (4, 7) for generating at least one shear wave (SW) in the target region (R) and a second system (10) for detecting a propagation pattern of the shear wave.

Abstract: An ultrasound imaging system (100) includes a transducer array (102) that emits an ultrasound beam and produces at least one transverse pulse-echo field that oscillates in a direction transverse to the emitted ultrasound beam and that receive echoes produced in response thereto and a spectral velocity estimator (110) that determines a velocity spectrum for flowing structure, which flows at an angle of 90 degrees and flows at angles less than 90 degrees with respect to the emitted ultrasound beam, based on the received echoes.

Abstract: Calculation of shim settings for magnetic resonance imaging includes defining an examination volume for the magnetic resonance imaging in a body of the examination object, determining a local shim volume, which includes a subregion of the examination volume, calculating shim settings, wherein a tissue, which is present in the local shim volume, of the body of the examination object is incorporated into the calculation of the shim settings, and acquiring magnetic resonance raw data of the examination volume by operation of a magnetic resonance scanner, using the calculated shim settings.

Abstract: Methods, apparatus, and systems for flow measurements by alternating magnetic fields are provided. An example alternating magnetic field flowmeter includes a magnetic token movable within a conduit for guiding a fluid flow (conductive or non-conductive) along a flow path, a magnetic field generator configured to generate alternating magnetic fields within the conduit to move the magnetic token along the flow path with a first flow velocity and opposite to the flow path with a second flow velocity, a detector configured to measure respective first and second electrical signals responsive to the alternating magnetic fields, the first and second electrical signals associated with the first and second flow velocities, and a processor configured to determine a flow rate of the fluid based on the first and second electrical signals. The alternating magnetic field flowmeter can include a calibrator configured to manually or automatically calibrate the flow rate with a correction factor.

Abstract: Methods of processing MRI image data to reduce or eliminate motion-related artifacts in MRI images includes: electronically repeatedly acquiring sets of 2D or 3D k-space data of a target region of a subject using at least one MRI pulse sequence; electronically applying a bootstrapping procedure to produce a large number of images from the acquired k-space data; then electronically evaluating the images produced by the bootstrapping procedure; and electronically identifying an image with a minimal motion-related artifact level from the evaluation of the images produced by the bootstrapping procedure.

Abstract: A system and method for producing high resolution diffusion information and imaging from a subject. In some aspects, the method includes receiving a plurality of low resolution diffusion images, each acquired with a different set of gradient directions and shifted in a slice direction, and generating a model correlating diffusion signals associated with the plurality of low resolution diffusion images and a high resolution diffusion image. The method also includes reconstructing the high resolution diffusion image by minimizing a cost function determined using the model. In some applications, the method further includes processing the high resolution diffusion image to generate a report providing diffusion information associated with the subject.

Abstract: The present invention is related to a method of acquiring free-breathing steady-state magnetic resonance images (MRI) and a free-breathing Magnetic Resonance (MR) imaging system (10) for generating a MR image of a test subject (20) at least comprising a magnetic field unit, a control unit for controlling functions of the MR imaging system, an image processing unit and a user interface capable of receiving parameters defining a MR-pulse sequence, wherein the MR imaging system further comprises a detection unit (36) for detecting physiological activity of a test subject and a data processing unit (40) capable of performing statistical analysis of the physiological activity data and capable to adaptively tailor at least one of the parameters of the MR-pulse sequence based on the statistical analysis. This includes at least adjustment of at least the starting points and/or the duration of dummy excitations which are part of the MR-pulse sequence.

Abstract: An embodiment in accordance with the present invention provides a method of non-invasively detecting and imaging temperature or temperature changes by assessing the temperature induced shifts in the saturation spectrum of water using MRI, namely saturation shift referencing. This procedure includes the MRI procedures to assess water saturation spectrum and the data processing steps to determine the temperature induced shifts of water resonance frequency and consequently to estimate the temperature change. This procedure also includes the procedure of assessing fat saturation spectrum and estimating fat resonance frequency. This method can be used as a clinical procedure for temperature mapping in multiple applications, especially where a significant amount of fat is present. One application is to monitor the temperature of the targeted tumor and its surrounding tissues during the procedure of hyperthermia.

Abstract: The present invention provides a three dimensional nuclear magnetic resonance logging instrument based on multiple antenna excitation, including: a probe, an excitation transmitter and a bearing component; the probe includes magnet and multiple antennas arranged at outer side of the magnet, and the multiple antenna individually and independently provide feed; a holding cavity is provided in the bearing component, and the excitation transmitter is fixed in the holding cavity; and the excitation transmitter includes a transmitter framework and an excitation circuit; the transmitter framework and the bearing component are fixedly connected; and the excitation circuit is fixed on the transmitter framework, and is electrically connected with each of the multiple antennas for feeding the multiple antennas.

Abstract: Systems and methods for accelerating magnetic resonance fingerprinting (“MRF”} acquisitions are described. Acquisition parameters can be optimized to reduce the number of acquisitions necessary while maximizing the discrimination between the physical parameters to be estimated. The systems and methods may also include implementing pulse sequences that rapidly acquire large volumes of k-space data, including echo-planar imaging (“EPI”} and segmented EPI sequences.

Abstract: In a method and apparatus to acquire magnetic resonance data from a subject and to enter the acquired data into k-space, data entered in an upper-half portion of k-space are acquired under a forward phase encoding gradient of the scanner so as to obtain a first portion of k-space data, and data in a lower-half portion of k-space are acquired under a reverse phase encoding gradient of the scanner so as to obtain a second portion of k-space data. The first portion of k-space data and the second portion of k-space data are combined to form complete k-space data, wherein the first portion of k-space data and the second portion of k-space data each constitute at least half of the complete k-space data.

Abstract: A method is provided for recording, with a magnetic resonance device, magnetic resonance data of a target region of a patient moved by their breathing. An optical camera arranged in a bore of the magnetic resonance device directed onto the patient is used. Image data of the patient recorded by the camera before and/or during the recording of the magnetic resonance data is evaluated to form breathing information describing the breathing state and the breathing information is used for triggering and/or movement correction and/or assessment of a process in which a patient holds their breath.

Abstract: The present disclosure provides systems and methods for universal mapping of T1 in abdominal organs using cardiac gating. A region of interest is selected for mapping or imaging. A determination is made whether any one or more of heart associated motion, high heart rate and irregular heart beat are detected in the region of interest. A multi-pathway gating of T1 maps is then employed providing a universal method of T1 mapping of moving as well as non-moving visceral organs.

Abstract: A method of determining a residue function in brain tissue, from medical images acquired after introducing contrast agent into the blood, correcting for contrast agent leakage into the tissue, comprising: a) providing time signals indicating contrast agent concentration for leaking voxels, a time signal indicating average contrast agent concentration for non-leaking voxels, and an artery input function, all derived from the images; b) fitting the leaking voxel signals to a model time signal with a free parameter for leakage rate, the model assuming that the concentration of contrast agent perfusing through a leaking voxel has a same shape as a function of time as the average contrast agent concentration for non-leaking voxels; c) using the best fit leakage rate parameter to make a correction for leakage to the leaking voxel signals; and d) deconvolving the corrected signals from the artery input function, to find the residue function.

Abstract: A method for using flexible triggered segmentation to optimize magnetic resonance imaging includes partitioning a k-space table into a plurality of k-space segments, each respective k-space segment comprising one or more phase-encoding steps from a plurality of slice-encoding lines. A cardiac cycle is monitored using an electrical signal tracking system and used to trigger acquisition of the plurality of k-space segments over a plurality of acquisition windows.

Abstract: Embodiments can provide a computer-implemented method for simultaneous multi-slice pulse wave velocity measurement, the method comprising simultaneously acquiring a plurality of multiple parallel images slices from a medical imaging device; shifting the plurality of image slices through modulation of the line-by-line phase patterns for each slice in the plurality of slices; deriving a plurality of image waveforms from the plurality of slices; measuring a distance between a plurality of imaging planes corresponding to the plurality of image slices; determining, for each of the image waveforms, a time-to marker; determining the temporal shift by calculating the difference between the time-to markers; and computing the pulse wave velocity by dividing the distance between the plurality of imaging planes by the temporal shift.

Abstract: A method for phase-contrast imaging a fluid within a volume of an imaged subject is provided. The method includes acquiring a plurality of slabs, each slab imaging the fluid flowing within a portion of the volume; and volume merging the plurality of slabs to form an image of the volume. Each slab of the plurality is aligned with respect to the volume such that each slab of the plurality is continuously supplied with a plurality of magnetically unsaturated portions of the fluid during acquisition.

Abstract: There is provided a magnetic resonance imaging system using magnetic resonance electrical impedance tomography comprising: a current generation controller configured to control an electric current which is applied to a measurement target; a converter configured to perform analog-digital conversion of data which are obtained by a RF pulse and a gradient pulse applied to the measurement target every repetition time according to a sequence for steady state free precession (SSFP) and, also, by the applied electric current; and an image generator configured to generate an image upon a conductivity distribution of the measurement target by using output data of the converter, wherein the current generation controller controls the electric current to be applied for a preset time within a certain repetition time.

Abstract: Systems and methods for producing a quantitative parameter map using a magnetic resonance imaging (MRI) system includes providing magnetic resonance fingerprinting (MRF) data acquired with an MRI system from a subject. The MRF data represents a plurality of different signal evolutions acquired using different acquisition parameter settings. The method also includes providing a database comprising a plurality of sub-dictionaries, each sub-dictionary including a plurality of signal templates, sequentially comparing the MRF data to each of the sub-dictionaries to estimate quantitative parameters, and generating a quantitative parameter map of the subject using the estimate quantitative parameters.

Abstract: In another exemplary embodiment of the present disclosure is an exemplary system, method and computer-accessible for determining a characteristic(s) of a tissue(s), that can include, for example, receiving magnetic resonance imaging information regarding the tissue(s) including a time-intensity curve(s) of the tissue(s) based on a contrast agent(s) concentration, actively encoding a part of the time-intensity curve(s) with a magnetic resonance relaxation property(s) of the tissue(s) by varying a magnetic resonance imaging scan parameter(s) to generate encoded data during magnetic resonance data acquisition, and determining the tissue characteristic(s) based on the encoded data.

Abstract: A method, which is performed by an MRI apparatus, of scanning a blood vessel, includes: sequentially applying, according to a time-of-flight (TOF) method, radio frequency (RF) pulses respectively to first grouped slabs during a first repetition time (TR); sequentially acquiring MR signals respectively corresponding to the RF pulses applied during the first TR; sequentially applying, according to the TOF method, RF pulses respectively to second grouped slabs during a second TR; and sequentially acquiring MR signals respectively corresponding to the RF pulses applied during the second TR.

Abstract: A method for creating a magnetic resonance (MR) image with prospective motion correction with a recording of navigation signals and navigator reference signals for the determination of motion information is provided. During the determination of the motion information, the partial volumes of the navigator volume are not all treated equally. Different weightings are used.

Abstract: In a multi-slice data acquisition method and device and a magnetic resonance imaging method and apparatus, a number NC of fractional acquisitions and a number NS of slice individual, complete data acquisition of the multi-slice data acquisition are determined. Using an iterative odd/even arranging method, a slice data acquisition order of each of the fractional acquisitions is arranged according to an ideal number of iterations. The ideal number of iterations is obtained from multiple undetermined numbers j of iterations of the iterative odd/even arranging method according to the number NS of slice data and the number NC of fractional acquisitions. This multi-slice data acquisition method optimizes the slice data acquisition order so as to significantly reduce the effect of magnetization transfer and crosstalk.

Abstract: A magnetic resonance method and system are provided for generating real-time motion-corrected perfusion images based on pulsed arterial spin labeling (PASL) with a readout sequence such as a 3D gradient and spin echo (GRASE) image data acquisition block. The real-time motion correction is achieved by using a volumetric 3D EPI navigator that is provided during an intrinsic delay in the PASL sequence, which corrects for motion prospectively and does not extend the image data acquisition time as compared to a similar non-motion-corrected imaging procedure.

Abstract: A system and method acquiring images of a region of interest (ROI) of a subject using a magnetic resonance imaging system. The system or method are capable of acquiring pathological data from tissue in the ROI believed to be pathological tissue and acquiring baseline data from tissue in the subject believed to not be pathological tissue. The system or method are also capable of determining correlation parameters from baseline data, generating corrected data using the baseline correlation parameters to correct the pathological data at least for intrinsic heterogeneity, and generating a report using the corrected data.

Abstract: Provided are a method and a magnetic resonance imaging apparatus for measuring an MR signal. The method includes: applying a radio frequency (RF) pulse to an object; acquiring, as a response to the RF pulse, a plurality of echo signals from a plurality of readout gradients formed on a gradient coil; measuring delay times of the plurality of echo signals based on points in time when the respective echo signals are acquired; and determining a gradient delay based on the plurality of delay times.

Abstract: In a method and a magnetic resonance system for acquiring MR data in a predetermined volume segment of an examination subject, an RF excitation pulse is radiated and MR data are acquired along trajectories extending radially through the center of k-space. The MR data of one k-space spoke, which corresponds to one half of a trajectory, are acquired while gradients are switched. Starting from the same RF excitation pulse, only MR data of one k-space spoke are acquired by starting in the k-space center, acquiring the MR data continuously up to the k-space periphery. The echo time is greater than 1 ms.