Abstract: A method, device, and system for reducing inhomogeneity in an imaging magnetic field during magnetic resonance imaging is described. The method includes generating a corrective magnetic field during imaging, the corrective magnetic field having a first magnetic field component and a second magnetic field component with a phase separation therebetween. The first and second components are generated according to a stability parameter decomposed from a stability field that correct an instability identified within the imaging magnetic field.

Abstract: Techniques are described for generating an MR image of an object using a multi spin-echo based imaging sequence with a plurality of k space segments using a preparation pulse. The technique included acquiring a first k-space dataset of the object using a first echo time and a first delay after the preparation pulse before the several spin-echoes are acquired. The technique further includes acquiring a second k space dataset of the object using a second echo time and a second delay after the preparation pulse, with at least one of the second echo time and the second delay time being different from the corresponding first echo time and the first delay time, generating a combined k space, and generating the MR image based on the combined k space dataset.

Abstract: An image forming apparatus includes an image forming device, a heater, and a controller. The image forming device is configured to generate a laser scanning beam based on the image data to form a toner image on a sheet. The heater is configured to heat the sheet. The heater includes heater elements arranged in a direction corresponding to the main scanning direction of the laser scanning. The controller is configured to selectively control the heater elements to be energized at an energization start timing based on the image data and a signal from the image forming device indicating a start of scanning by the laser scanning beam in the main scanning direction.

Abstract: A plurality of sets of k-space data each of the same image region of a subject but having different contrasts are obtained. A sparse image coding procedure is performed to reconstruct a plurality of MR images each corresponding to one of the sets of k-space data. This involves solving an optimization problem comprising a data consistency iteration step used to generate the reconstructed MR images; and a denoising iteration step applied to the reconstructed MR images generated during the data consistency iteration step. The denoising iteration step includes performing a 2D/3D block matching operation to identify similar patches across the reconstructed MR images, and using the similar patches across the reconstructed MR images in a sparsifying operation to provide sparse representations of the reconstructed MR images. The sparse representations are used as an input to the data consistency iteration step.

Abstract: A liquid-state nuclear-magnetic-resonance measurement cell includes a reservoir for a liquid medium; a fluidic circuit connected to the reservoir and comprising a measurement chamber; a gas injector opening into the fluidic circuit, at a distance from the measurement chamber; and a coil encircling the measurement chamber; wherein it also comprises at least one capacitive element forming, with the coil, an electromagnetic resonator; and in that it has a shape allowing its introduction into a nuclear-magnetic-resonance probe in replacement of an assembly formed by a nuclear-magnetic-resonance tube and a spinner bearing the tube, the coil encircling the measurement chamber being then positioned so as to couple by induction to at least one radiofrequency coil of the probe. Nuclear-magnetic-resonance measurement system comprising such a measurement cell. Magnetic-resonance measurement method using such a cell is also provided.

Abstract: A developing cartridge 1 may include a developing roller including a developing roller shaft, a casing capable of containing a developer material, and a developing electrode or a member configure to be electrically connected to the developing roller shaft. The developing electrode or the member has a first end portion configured to be electrically connected to the developing roller shaft and a second end portion located farther away from the developing roller shaft than the first end portion. The second end portion is farther away in the second direction from the one end of the casing than the first end portion is from the one end of the casing. The developing electrode has a first hole extending in the second direction between the first end portion and the second end portion.

Abstract: An image forming apparatus includes an image forming unit, an apparatus main body, a conveyance unit, an opening/closing member, a discharge unit, and a stack tray. The conveyance unit conveys a sheet to the image forming unit. The opening/closing member opens and closes relative to the apparatus main body, and, where the opening/closing member is in an open state relative to the apparatus main body, allow making access to the conveyance unit. The discharge unit discharges the sheet on which the image is formed. The stack tray is turned between a first position for stacking sheets on the stack face, and a second position with an angle formed between an underside opposite to the stack face and a horizontal plane that is larger than an angle of the first position, and includes an engagement portion to engage with the apparatus main body in the second position.

Abstract: Provided is a noise source search device to be applied to an MM apparatus that obtains an NMR signal generated from a subject disposed in a static magnetic field by applying an RF pulse of a high frequency coil and a gradient magnetic field pulse of a gradient magnetic field coil to the subject, the device including: a reference antenna and a probe antenna that measure a noise generated in the MRI apparatus; a noise generation condition specification unit that specifies an axis and a drive frequency as a noise generation condition generated in the MRI apparatus, on the basis of a noise intensity of the noise that is measured by the reference antenna; and a noise generation site specification unit that drives the gradient magnetic field coil under the noise generation condition that is specified by the noise generation condition specification unit.

Abstract: Apparatus for imaging during surgical procedures includes an operating room for the surgical procedure and an MRI for obtaining images periodically through the surgical procedure by moving the magnet up to the table. The magnet wire is formed of a superconducting material such as magnesium di-boride or Niobium-Titanium which is cooled by a vacuum cryocooling system to superconductivity without use of liquid helium. The magnet weighs less than 1 to 2 tonne and has a floor area in the range 15 to 35 sq feet so that it can be carried on the floor by a support system having an air cushion covering the base area of the magnet having side skirts so as to spread the weight over the entire base area. The magnet remains in the room during surgery and is powered off to turn off the magnetic field when in the second position remote from the table.

Abstract: A method and a magnetic resonance imaging device, and a corresponding computer readable storage medium. The method includes acquiring a distortion function describing a frequency dependence of an amplitude or phase of an MR-signal received by a receiver part of the MRI-device, Fourier transforming K-space data acquired using this receiver part to image space data, generating compensated image space data by compensating for the frequency dependence by dividing the image space data or image space data derived therefrom in image space by the distortion function, and providing the MR-image as the compensated image space data or reconstructed therefrom.

Abstract: A transfer device includes a transfer unit and an adjustment unit. The transfer unit includes a transfer belt and a transfer roller. The transfer belt is wound around a rotating winding roller to circulate. An image is to be formed on the transfer belt. The transfer roller is disposed on an opposite side of the winding roller across the transfer belt. The transfer roller is configured to transfer the image on the transfer belt to a recording medium. The adjustment unit is configured to change an axial direction of the transfer roller to adjust parallelism between an axis of the transfer roller and an axis of the winding roller.

Abstract: There is provided a method for controlling an electrophotographic apparatus including forming a first measurement image by performing first halftone processing on image data, forming a second measurement image by performing second halftone processing different from the first halftone processing on the image data, measuring densities of the first measurement image and the second measurement image, calculating a density difference between each of densities of the measurement images, determining whether the density difference satisfies a predetermined reference value, and applying a surface treatment on an electrophotographic photosensitive member if the density difference does not satisfy the reference value, during a non-image formation period.

Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.

Abstract: An ultra-low field pre-pulse Magnetic Resonance Imaging (PMRI) system for a head includes RF coils defining a bore for head access, a pre-pulse coil outside the RF coils, and a coil assembly including a main magnetic field coil and gradient coils outside the pre-pulse coil. The PMRI system includes a first cylindrical shield concentric with the RF coils and made from conductive materials. The first cylindrical shield partially encloses the RF coils and inside the pre-pulse coil for shielding the RF coils from environmental electromagnetic disturbances.

Abstract: Systems and methods for ZTE MRI are disclosed. An exemplary method includes obtaining Larmor frequencies of water and/or fat for a region of interest of a subject to be imaged at a pre-scan and setting a center frequency for an RF transceiver of the MR system at a value between the Larmor frequencies of water and fat. A ZTE pulse sequence is applied to the subject and MR signals in response to the ZTE pulse sequence are received from the subject. The received MR signals are demodulated with the center frequency and an in-phase ZTE image is generated from the demodulated MR signals.

Abstract: In a method for isochronous communication of components of a multi-component apparatus, which communicate via peer-to-peer communication connections created by a switch, a periodic communication clock signal is provided by a control computer to all the components, with a communication window between two communication clock cycles of the communication clock signal, in which a communication information item of the isochronous communication is transferrable from a transferring component to at least one addressed component. A synchronization, in relation to the communication clock signal, between at least two of the components is produced by at least one synchronization message sent via the switch by one of the components to be synchronized to all the other components to be synchronized in a communication time window.

Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes processing circuitry. The processing circuitry generates, from a first image influenced by a magnetic field distortion, a second image in which the influence of the distortion is corrected, receives a first area setting in the second image and calculates, by a method of the calculation depending on an imaging purpose, an excitation area in the imaging based on the first area.

Abstract: According to one embodiment, there is provided a belt positioning structure including a belt roller, a belt, a projection, and a first rotating body. The belt roller is rotatable about a roller axis. The belt is wound around the belt roller. The projection is provided so as to protrude from an inner peripheral surface of the belt. The first rotating body regulates the projection from moving in a first direction approaching the belt roller along the roller axis. The first rotating body is rotatable around an axis. At least a portion of an outer peripheral surface of the first rotating body faces a side surface of the projection on the first direction side.

Abstract: A magnetic resonance system includes a magnet device, which is arranged in an outer housing and an inner housing located therein. A monitoring method includes determining a value of a vibration amplitude of the outer housing or an intermediate housing located between the inner housing and the outer housing at a vibration frequency; providing a transmission ratio between the vibration amplitude and the operating parameter at the vibration frequency; and determining a value of the operating parameter as a function of the determined value of the vibration amplitude by means of the transmission ratio.

Abstract: Attenuation of microwaves is reduced or prevented when vacuum windows are provided in microwave waveguides of a DNP-NMR probe. A DNP-NMR probe has an inner container and an outer container. The inner container has therein a sample tube containing a sample to which radicals are added. The outer container keeps a space between the outer container and the inner container in the outer container in a vacuum state. The outer container has an outer container waveguide that has a vacuum window at an inner end portion and guides microwaves. The inner container has a vacuum window facing the vacuum window of the outer container waveguide through vacuum, and guides microwaves transmitted from the outer container waveguide to the sample. The window-to-window distance between the vacuum window of the outer container and the vacuum window of the inner container is adjusted by means of adjustment bolts.