Abstract: A toner cartridge according to one example embodiment includes a developer roll and a toner adder roll. First and second drive gears are rotatably connected to and coaxial with the developer roll and toner adder roll, respectively. The toner cartridge includes a drive coupler exposed to receive rotational motion when the toner cartridge is installed in an image forming device. Gear teeth of the first drive gear are directly meshed with gear teeth of the drive coupler of the toner cartridge. The second drive gear is rotatably connected to the drive coupler through a pair of idler gears.

Abstract: An object of the present invention is to provide an MRI apparatus capable of optimally setting imaging conditions for map measurement depending on a target value and its required accuracy, and a method for controlling the MRI apparatus. An imaging unit of the MRI apparatus includes, as a pulse sequence, a pulse sequence for the T1 map measurement that includes a first signal acquisition sequence and a plurality of signal acquisition sequences executed after application of an inverted pulse and at different signal acquisition times from the inverted pulse. An imaging controller of the MRI apparatus controls the imaging conditions of each of the plurality of signal acquisition sequences, for example, the signal acquisition time from the inverted pulse and the number of signal acquisition sequences depending on the T1 value of an imaging target and the required accuracy.

Abstract: A sensor for a nuclear magnetic resonance device includes a magnetic field generation apparatus with a planar magnet arrangement for generating a static magnetic field in a useful volume. The planar magnet arrangement has a plurality of magnetic poles on a front side facing the useful volume, which are arranged adjacent to each other along an extension direction of the planar magnet arrangement with alternating orientation, and a measuring apparatus for measuring a signal based on nuclear magnetic resonance of a material sample arranged in the useful volume. The measuring apparatus includes an electrical coil having a winding for generating an alternating magnetic field in the useful volume, the winding arranged between two directly adjacent magnetic poles of the planar magnet arrangement such that the alternating magnetic field of the electrical coil is superposed with the static magnetic field of the planar magnet arrangement orthogonally in the entire useful volume.

Abstract: A flexible coil with improved tolerance for overlapping antennas and with reduced susceptibility to the introduction of image artifacts as a result of overlapping antennas utilizes antennas with multiple conductors extending in parallel for the length of the antenna. Each conductor is connected to the other conductor at each end creating parallel conduction paths for the length of the antenna. The parallel conduction paths reduce the resistance of the antenna which, in turn, improves the quality factor of the antenna. The improved quality factor results in antennas that are less susceptible to image artifacts being induced in the antenna due to coupling from an overlapping antenna.

Abstract: A rotor housing assembly for NMR spectroscopy. An elongate rotor has a distal drive end, a proximal end and an internal sample space positioned along its length between the drive and proximal ends. The rotor is driveable about a rotation axis by a drive gas flow. A rotor housing has an interior space in which the rotor is at least partially received. At least one first heated gas flow inlet is positioned opposite the internal sample space, through which a first heated gas flow is controllably flowable into the interior space to heat it and the rotor. At least a pair of spaced apart second heated gas flow outlets are axially spaced from the first heated gas flow inlet to controllably convey a second heated gas flow to heat distal and proximal areas of the sample space to minimize a temperature gradient extending axially within the sample space.

Abstract: A multi-channel RF transmitter system including a magnetic resonance imaging device, a multi-channel RF coil array, a control computer receiving required parameters from a user, producing triggering and clock signals and synthesizing input data required for each channel of RF coil array according to imaging scenario to be realized, an interface control module producing basic band MRI signals according to data from the control computer, a signal modulator and control module for modulating MRI signals produced at the interface control module into radio frequency and distribution to channels, a power/data distribution module distributing the produced signals and required DC power, a RF power amplifier module converting digital signal coming from the power/data distribution module into analog signal, amplifying it and transmitting to members of the coil array, a feedback line for track and correction of any errors in RF signal transmitted to the coil array by the power amplifier module.

Abstract: A system and method is provided for acquisition of magnetic resonance fingerprinting (“MRF”) data that includes determining a non-locally sequential sampling pattern for a Cartesian grid of k-space, performing a series of sequence blocks using acquisition parameters that vary between sequence blocks to acquire MRF data from a subject using the Cartesian grid of k-space and the determined non-locally sequential sampling pattern, assembling the MRF data into a series of signal evolutions, comparing the series of signal evolutions to a dictionary of known signal evolutions to determine tissue properties of the subject, and generating a report indicating the tissue properties of the subject.

Abstract: An apparatus, method, and system are disclosed for improving uniformity of RF magnetic field in an MRI system, and thereby improving both signal-to-noise ratio and uniformity of imaging sensitivity across a sampling volume, to provide more uniform MRI images. A passive LC resonator develops induced EMF and induced currents in a primary RF magnetic field; the secondary magnetic field produced thereby can counteract magnetic field amplitude gradients to produce a more homogeneous RF magnetic field. In systems with separate transmit and receive coils, a shunt detuning circuit is pulsed ON to prevent interference during the transmit period. In a dual-frequency MRI machine (e.g. 19F and 1H), the RF magnetic field at the lower operating frequency can be homogenized by tuning the resonance of the passive resonator between the two operating frequencies. Another resonator can improve RF field uniformity at the higher operating frequency. Variants and experimental results are disclosed.

Abstract: A method for magnetic resonance fingerprinting with out-of-view artifact suppression includes acquiring MRF data from a region of interest in a subject. The MRF data is acquired using a non-Cartesian, variable density sampling trajectory. The MRF data includes data from within a desired field-of-view and data from outside the desired field-of-view. The method also includes generating a set of coil images based on the MRF data with a field-of-view larger than the desired field-of-view, determining a noise covariance based on the MRF data from outside the desired field-of-view, generating a coil combined image using an adaptive coil combination determined based on the noise covariance, applying the adaptive coil combination to the MRF data to grid each frame of the MRF data and generate MRF data with out-of-view artifact suppression. The method also includes identifying at least one property of the MRF data and generating a report.

Abstract: A photosensitive member unit includes a photosensitive member, a rotary member, a charging roller, a separating member, and a one-way clutch. The charging roller is moved to and positioned at a separated position in a case where the photosensitive member rotates in a second direction when the separating member is positioned at a first position. The charging roller is moved to and positioned at a contact position in a case where the photosensitive member rotates in a first direction when the separating member is positioned at a second position.

Abstract: A method for operating a magnetic resonance facility is provided herein. The facility has a main magnet unit with a patient-receiving area, a movable, controllable patient table for positioning a patient in the patient-receiving area, a table control unit for controlling the patient table, and, on the main magnet unit, an operating facility that communicates with the table control unit, for operation of the patient table by a user. The operating facility has a first, electronic operating device for setting control parameters for a movement of the patient table to be performed, and a second, mechanical operating device for triggering the movement.

Abstract: The present invention generally relates to a method of using NMR relaxation rates (R2) of water molecules as an indicator of the extent of aggregation of biopharmaceutical formulations. The biopharmaceutical can be evaluated nondestructively without the vial or container being opened or protective seal compromised (i.e., broken). The method is applicable to all biopharmaceuticals and the water signal obtained by magnetic resonance relaxometry is very strong and sensitive because water is used as the solvent and is present in high (>90%) concentrations in every biopharmaceutical formulation.

Abstract: System and methods that reconstruct absolute temperature using a multi-nuclear approach. Specifically, the methods and systems utilize independent NMR/MRI information provided by the precession frequency of two different nuclei to reconstruct a map of the absolute temperature.

Abstract: A device to extract digital and unintended analog signals from a data bus with a non-contact common mode probe and a differential mode probe, each with a low noise amplifier. The analog and digital signals can be monitored contemporaneously.

Abstract: A magnetic resonance unit includes a shim coil apparatus and a gradient coil apparatus. The shim coil apparatus is configured to compensate for basic magnetic field inhomogeneities of the first order in an examination region of the magnetic resonance unit. The shim coil apparatus includes at least one shim coil element. The gradient coil apparatus is arranged in a gradient coil layer. In addition to the gradient coil apparatus, at least one part of the at least one shim coil element is arranged in the gradient coil layer.

Abstract: Systems and methods for generating an image of a subject using a magnetic resonance imaging (MRI) device may be provided. The method may include obtaining a radial sampling scheme including a plurality of radial lines that each pass through a center of k-space. The method may include selecting the plurality of radial lines of the radial sampling scheme. Each of the plurality of radial lines may be selected in a random and unrepeatable manner. The method may include acquiring k-space data along the selected radial lines. The method may include reconstructing at least one image of the subject based on the acquired k-space data.

Abstract: A system and method is provided for correcting receiver bias during quantitative proton density mapping with magnetic resonance fingerprinting (MRF). The method comprises acquiring MRF data from a region of interest in a subject by performing a pulse sequence using a series of varied sequence blocks to elicit a series of signal evolutions. The method further comprises comparing the MRF data to a MRF dictionary to simultaneously map proton density and another tissue property from the region of interest, the proton density map having a proton density signal and a receiver sensitivity profile signal. The method also includes quantifying the proton density signal and the receiver sensitivity profile signal using parameters provided by the proton density map and the tissue property map, and generating a quantitative map from the region of interest based on the proton density signal.

Abstract: A medium processing apparatus includes a processor that performs a process related to a medium. The medium processing apparatus includes a discharging section, an operation section, and an operation controller. The discharging section discharges the medium. The operation section is disposed downstream of the discharging section in a discharging direction and includes a touch sensor. The discharging direction is a direction in which the discharging section discharges the medium. The touch sensor detects an operation input. The operation controller limits, on the basis of size information, detection operation performed by the touch sensor. The size information indicates information related to a medium size of the medium.

Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes imaging control circuitry and processing circuitry. The imaging control circuitry acquires MR signals in accordance with a first pulse sequence set in an imaging protocol. The processing circuitry determines, during MR signal acquisition according to the first pulse sequence, whether or not additional acquisition of MR signals is necessary based on a determination of image quality based on the acquired MR signals, and if necessity of additional acquisition is determined, adds a second pulse sequence for the additional acquisition to the imaging protocol. The imaging control circuitry acquires MR signals in accordance with the added second pulse sequence. The processing circuitry reconstructs an MR image based on the MR signals acquired through the first pulse sequence and the second pulse sequence.

Abstract: In a method for operating an MRI device, image data is acquired using a spin echo sequence with an additional readout per pulse train for acquiring correction data. By comparing subsequent correction data of later pulse trains to reference data acquired during a first pulse train of the sequence a difference indicating a parameter shift is determined. A corresponding compensation is then automatically determined in dependence on the difference and is applied to a set of predetermined parameters for at least a respective next pulse train and/or to the image data acquired in at least a respective next pulse train of the sequence.