Abstract: An embodiment of the present invention provides a scanning control system for a magnetic resonance imaging system, comprising: a first 3D camera, configured to capture a three-dimensional image of a scan subject located on a scanning table of the magnetic resonance imaging system; a processing device, configured to identify body position information of the scan subject based on the three-dimensional image; and a control device, configured to set scanning parameters related to a body position based on the body position information.

Abstract: An embodiment of the present invention provides a scanning control system for a magnetic resonance imaging system, comprising: a first 3D camera, configured to capture a three-dimensional image of a scan subject located on a scanning table of the magnetic resonance imaging system; a processing device, configured to identify body position information of the scan subject based on the three-dimensional image; and a control device, configured to set scanning parameters related to a body position based on the body position information.

Abstract: A magnetic resonance imaging system and method, and a computer-readable storage medium are provided. The magnetic resonance imaging method includes: acquiring a plurality of k-space data sets by using a plurality of imaging sequences, each imaging sequence comprising a pre-phase-dispersion gradient pulse and a plurality of phase encoding gradients applied after the pre-phase-dispersion gradient pulse, wherein the pre-phase-dispersion gradient pulses of the plurality of imaging sequences have a standard area difference therebetween when ordered according to area values; respectively reconstructing magnetic resonance images from the respective k-space data sets; and averaging amplitudes of the magnetic resonance images to generate a magnetic resonance image of an average amplitude.

Abstract: Embodiments of the present invention provide a magnetic resonance imaging method and system and a computer-readable storage medium.

Abstract: Systems and methods for suppressing Nyquist ghost for diffusion weighted magnetic resonance imaging are disclosed. An exemplary method includes acquiring multiple k-space data sets using multiple sets of diffusion weighted imaging pulse sequences, reconstructing a magnetic resonance image from each of the multiple k-space data sets respectively, and averaging magnitudes of the magnetic resonance images to generate an average magnitude magnetic resonance image.

Abstract: Systems and methods for suppressing Nyquist ghost for diffusion weighted magnetic resonance imaging are disclosed. An exemplary method includes acquiring multiple k-space data sets using multiple sets of diffusion weighted imaging pulse sequences, reconstructing a magnetic resonance image from each of the multiple k-space data sets respectively, and averaging magnitudes of the magnetic resonance images to generate an average magnitude magnetic resonance image.

Abstract: Provided in embodiments of the present invention are a body mold, a magnetic resonance imaging system, and a main magnetic field evaluation method and a gradient field evaluation method therefor. The body mold comprises a plurality of substrates, wherein the plurality of substrates are sequentially arranged to form a multi-layer structure in a three-dimensional space. Each substrate is provided with a plurality of first accommodation bodies for accommodating first resonant volumes and a plurality of second accommodation bodies for accommodating second resonant volumes. The plurality of first accommodation bodies and the plurality of second accommodation bodies are arranged at intervals. The first resonant volumes and the second resonant volumes have different longitudinal relaxation times T1.

Abstract: An embodiment of the present invention provides a scanning control system for a magnetic resonance imaging system, comprising: a first 3D camera, configured to capture a three-dimensional image of a scan subject located on a scanning table of the magnetic resonance imaging system; a processing device, configured to identify body position information of the scan subject based on the three-dimensional image; and a control device, configured to set scanning parameters related to a body position based on the body position information.

Abstract: Embodiments of the present invention provide a magnetic resonance imaging method and system and a computer-readable storage medium.

Abstract: Spike noise in a k-space dataset acquired in magnetic resonance imaging may be removed by generating a mask including a set of data points which constitute spike noise in the k-space dataset based on the acquired k-space dataset via a trained deep learning network, the mask corresponding to a location of the spike noise in the acquired k-space dataset. An image reconstructed based on the acquired k-space dataset and the mask may be displayed.

Abstract: A gradient amplifier for use in a MRI system can be located in the scan room. The gradient amplifier includes pair of rails connected to a gradient power supply. The gradient amplifier also includes a H-bridge of switches which includes a first high side switch and a first low side switch connected in series between the pair of rails, and a second high side switch and a second low side switch connected in series between the pair of rails. The gradient amplifier further includes a first high side driver circuit, a first low side driver circuit, a second high side driver circuit, and a second low side driver circuit, each configured to drive the corresponding switch in the H-bridge. A common power source supplies power to all driver circuits, wherein power is supplied to the high side driver circuits through bootstrap circuits.

Abstract: Various methods and systems are provided for a flexible, comfortable breast radio frequency (RF) coil assembly for a magnetic resonance imaging system. The breast RF coil assembly may include two cups each housing eight RF coils arranged in an overlapping fashion. The breast RF coil assembly may further include respective flanking coil arrays on a side of each cup, with each flanking coil array housing four RF coils.

Abstract: A gradient amplifier for use in a MRI system can be located in the scan room. The gradient amplifier includes pair of rails connected to a gradient power supply. The gradient amplifier also includes a H-bridge of switches which includes a first high side switch and a first low side switch connected in series between the pair of rails, and a second high side switch and a second low side switch connected in series between the pair of rails. The gradient amplifier further includes a first high side driver circuit, a first low side driver circuit, a second high side driver circuit, and a second low side driver circuit, each configured to drive the corresponding switch in the H-bridge. A common power source supplies power to all driver circuits, wherein power is supplied to the high side driver circuits through bootstrap circuits.

Abstract: A magnetic resonance imaging system includes a display device and a host. The host includes a power cabinet having a gradient driver including a gradient controller and a gradient amplifier, and a radio frequency (RF) driver including a RF controller and a RF amplifier. The host also includes a magnetic field generating device including a pair of main magnets with opposite polarities that face each other and are spaced apart from each other, a magnet column that forms a magnetic circuit for the main magnets, and a gradient coil unit, wherein the power cabinet is provided adjacent to the outside of the magnet column of the magnetic field generating device, and wherein the power cabinet is configured to heat said main magnets by transferring heat produced in the power cabinet to the main magnets.

Abstract: A method for generating a magnetic resonance image of a moving subject comprises tracking the position and orientation of a target volume and modifying acquisition parameters for each line of k-space data using current position and orientation information. By approximating the target volume as a rigid object, the current position and orientation is translated into an offset vector and a rotation which are used to modify the acquisition of each k-space line individually. The offset along a slice direction is compensated for by changing the transmit frequency. The offset along the frequency-encoding direction is compensated for by changing the frequency of a reference demodulation signal. The offset along the phase direction is compensated for by changing the phase of a reference demodulation signal, or by adding a phase into the line of k-space data after acquisition.

Abstract: To achieve a good balance among the magnetic field intensity, region of homogeneous magnetic field intensity and cost, a magnetic field generating apparatus for generating a magnetic field in a vertical direction comprises: a pair of magnets having respective magnetic poles with mutually opposite polarities disposed to face each other in a vertical direction, for generating a static magnetic field having different dimensions of its region of homogeneous magnetic field intensity in two mutually orthogonal directions in a horizontal plane; a pair of planar magnetic elements, each element supporting respective one of the pair of the magnets; and a vertical columnar magnetic element lying in a direction different from the two directions, each end of which is joined to respective one of the pair of the planar magnetic elements.

Abstract: A method for generating a magnetic resonance image of a moving subject comprises tracking the position and orientation of a target volume and modifying acquisition parameters for each line of k-space data using current position and orientation information. By approximating the target volume as a rigid object, the current position and orientation is translated into an offset vector and a rotation which are used to modify the acquisition of each k-space line individually. The offset along a slice direction is compensated for by changing the transmit frequency. The offset along the frequency-encoding direction is compensated for by changing the frequency of a reference demodulation signal. The offset along the phase direction is compensated for by changing the phase of a reference demodulation signal, or by adding a phase into the line of k-space data after acquisition.

Abstract: To achieve a good balance among the magnetic field intensity, region of homogeneous magnetic field intensity and cost, a magnetic field generating apparatus for generating a magnetic field in a vertical direction comprises: a pair of magnets having respective magnetic poles with mutually opposite polarities disposed to face each other in a vertical direction, for generating a static magnetic field having different dimensions of its region of homogeneous magnetic field intensity in two mutually orthogonal directions in a horizontal plane; a pair of planar magnetic elements, each element supporting respective one of the pair of the magnets; and a vertical columnar magnetic element lying in a direction different from the two directions, each end of which is joined to respective one of the pair of the planar magnetic elements.