Abstract: A coil device (1) in which a first coil (2), a second coil (4) and a third coil (3), each having a flat plate shape, are stacked with one other, wherein the first coil has a clearance section, the third coil has a second clearance section, part or whole of a lead wire (44) drawn out from the inside to the peripheral portion of the second coil while striding over the second coil (4) as well as part or whole of a lead wires (37a, 37b) drawn out from the inside to the peripheral portion of the third coil (3) while striding over the third coil are accommodated in the clearance section, and part or whole of lead wires (27a, 26b) drawn out from the inside to the peripheral portion of the first coil (2) while striding over the first coil are accommodated in the second clearance section.

Abstract: In order to obtain a highly reliable image with no image distortion or no artifacts, such as ghosting, by compensating for the distortion of an output gradient magnetic field waveform caused by various factors with high accuracy, an input gradient magnetic field waveform and an output gradient magnetic field waveform corresponding to the input gradient magnetic field waveform are calculated, a response function that is a sum of response functions of a plurality of elements affecting the output gradient magnetic field waveform is calculated using the input gradient magnetic field waveform and the output gradient magnetic field waveform, an output gradient magnetic field waveform is calculated from an input gradient magnetic field waveform of a gradient magnetic field pulse set in the imaging sequence using the response function, and various kinds of correction are performed using the calculated value of the calculated output gradient magnetic field waveform.

Abstract: A magnetic resonance system includes a magnetic resonance scanner (8) and a magnetic resonance scan controller (24). A plurality of markers (40, 140) are attached to the subject to monitor motion of a portion of a subject within an examination region. A motion control unit receives motion data from the markers indicative of the motion and controls the magnetic scan controller to adjust scan parameters to compensate for the motion. In one embodiment, the marker (40) includes a substance (44) which resonates at a characteristic frequency in response to radio excitations by the magnetic resonance scanner. A controller (52) switches an inductive circuit (48, 50) disposed adjacent the substance between a tuned state and a detuned state.

Abstract: Formation testing systems and methods may inject fluids into a formation to initiate fractures and facilitate measurements of various formation properties. In accordance with certain disclosed embodiments, the injection tools are further provided with nuclear magnetic resonance (NMR) sensors to monitor the injected fluids and provide measurements of near-borehole fracture orientations and volumes. Contrast agents and/or magnetic resonance imaging (MRI) techniques may be employed. The fluid injection may occur via an extendible isolation pad, via a fracturing jet, or via an injection port in an isolated region of the borehole. The systems may employ pressure monitoring in conjunction with the NMR sensors to further enhance estimates of formation and fracture properties.

Abstract: In order to allow the capacitances of a plurality of resonance capacitor elements inserted in a ring-shaped conductor element of a birdcage-type high-frequency coil to be collectively adjusted in a balanced manner without the need to perform adjustment separately, there is provided a birdcage-type high-frequency coil including two ring-shaped conductor elements in which a plurality of resonance capacitor elements are inserted in series and a plurality of linear conductor elements electrically connected to the two ring-shaped conductor elements. An adjustment belt to change the apparent capacitances of the plurality of resonance capacitor elements collectively is slidably disposed on the outer periphery of at least one of the two ring-shaped conductor elements with a dielectric member interposed therebetween.

Abstract: A developing device includes a developer bearer disposed opposite an image bearer and configured to rotate and carry developer to a latent image on the image bearer, a developer container to contain the developer, a detector including a detecting portion to detect a density of toner in the developer in the developer container, a wire connected to the detector, and a wire holder to hold the wire and determine a position of the wire relative to the detector.

Abstract: In one embodiment, an MRI apparatus (10) includes a gap calculating unit (65), a candidate calculating unit (66) and a sequence setting unit (61). The gap calculating unit calculates a gap between the center frequency of an RF pulse and a resonance center frequency, after start of a pulse sequence. The candidate calculating unit calculates a plurality of candidate timings so as to avoid influence of a CF scan for measuring the resonance center frequency on MR signals, when the CF scan is inserted in the pulse sequence. The sequence setting unit sets the pulse sequence so that CF scans are inserted in the pulse sequence at the timings according to the gap and the candidate timings. Each time the CF scan is executed, the center frequency of an RF pulse is updated and the pulse sequence is continued. Thereby, the MR signals are acquired.

Abstract: The present invention relates a toner cartridge used for a laser printer. The toner cartridge comprises: a toner tank for storing fresh toner and a waste toner tank for storing waste toner obtained after development. When the toner cartridge is installed in a laser printer, the toner tank has a toner supplying section at a lower portion in a vertical direction thereof for supplying toner to an external environment. Two inner surfaces of the toner tank, arranged in a transverse direction of the toner tank and parallel with a direction in which the toner cartridge is installed into the laser printer, keep in a plane state at positions higher than the toner supplying section and are parallel with the vertical direction.

Abstract: An equipment and method for forecasting tunnel water inrush using a magnetic resonance differential, where a computer is connected to a transmitting bridge circuit through a high voltage power supply, to a control unit, a first and second signal modulating circuits and a multi-channel collecting circuit; the control unit is connected to a transmitting driver circuit, a first and second protection switches, and the transmitting bridge circuit through the transmitting driver circuit; two ends of a transceiving multi-turn coil are connected to the multi-channel collecting circuit through the first and second protection switches; two ends of a receiving multi-turn coil are connected to the multi-channel collecting circuit through the second protection switch and the second signal modulating circuit; one end of the transceiving multi-turn coil is connected to the transmitting bridge circuit, and the other end is connected to the transmitting bridge circuit through a resonant capacitor.

Abstract: A connector and medical equipment are provided. The connector includes at least one framework and at least one fastening structure. The at least one connector is used to connect a main body and a housing. The at least one framework is arranged along the outside of the main body. The fastening structure is located on the at least one framework. The at least one fastening structure is used to connect the housing.

Abstract: A fixing device includes a fixing roller; a heating unit, a pressing unit, a force imparting mechanism, a first pressure releasing mechanism including a first cam portion actable on the force imparting mechanism and a first gear portion for driving the first cam portion; and a second pressure releasing mechanism including a second cam portion actable on the force imparting mechanism and a second gear portion for driving the second cam portion. The first gear portion and the second gear portion engage with each other, and a driving force is transmitted from one gear portion of the first and second gear portions to the other gear portion.

Abstract: A developer supply container includes a developer accommodating portion for accommodating a developer, a discharge opening for permitting discharging of the developer from the developer accommodating portion, a drive receiving portion for receiving a driving force, and a pump portion capable of being driven by the driving force received by the drive receiving portion to alternate an internal pressure of the developer accommodating portion between a pressure lower than an ambient pressure and a pressure higher than the ambient pressure by increasing and decreasing a volume of the pump portion. A position of the pump portion is set such that the pump portion starts with a stroke in which the volume increases in an initial action of the pump portion.

Abstract: In a method and magnetic resonance (MR) apparatus for time-dependent intensity correction of diffusion-weighted MR images that are acquired with a sequence of different diffusion gradient fields, different diffusion gradient fields are associated with at least one group, with the association with groups being established so that the diffusion gradient fields that are associated with the same group satisfy an orthogonality criterion. For each group, an MR result image is created from the MR images associated with the group, such that the MR result image has a suppressed direction dependency of the diffusion weighting in comparison to the constituent MR images. An intensity correction can be made based on the multiple MR result images and used to correct the constituent MR images.

Abstract: One embodiment includes a nuclear magnetic resonance (NMR) gyroscope system. The system includes a vapor cell comprising an alkali metal and a plurality of gyromagnetic isotopes and a pump laser configured to generate an optical pump beam configured to spin-polarize the alkali metal. The system also includes a probe laser that generates an optical probe beam and a detection system configured to monitor the optical probe beam and to calculate a rotation of the NMR gyroscope system about a sensitive axis based on a modulation of the optical probe beam in response to precession of the plurality of gyromagnetic isotopes resulting from the spin-polarization of the alkali metal. The system further includes a calibration controller that modulates a characteristic of the optical pump beam to substantially mitigate bias errors associated with the gyromagnetic isotopes in the calculation of the rotation of the NMR gyroscope system about the sensitive axis.

Abstract: A device includes: a static magnetic field generating device including static magnetic field generating sources generating a homogeneous magnetic field in a space; gradient magnetic field generating sources superimposing a gradient magnetic field on the homogeneous magnetic field, and conductor rings arranged between the static magnetic field generating sources and the gradient magnetic field generating sources in a pair of arranging regions on both sides in a direction of the homogeneous magnetic field in a region where the homogeneous magnetic field is generated (imaging region), respectively, the conductor rings being separated from each other and making a pair. The conductor rings are mechanically connected to the gradient magnetic field generating device or the static magnetic field generating device. This provides an MRI device 1 capable of reduction in vibration with suppression of the image quality deterioration of the tomographic images.

Abstract: Provided is an image forming apparatus that includes a conveying section, an image forming section, a medium sensor, a mark printing section, and a controller. The conveying section is configured to convey a medium in a medium conveying direction. The image forming section is configured to form an image on the medium conveyed by the conveying section. The medium sensor is configured to perform detection of the medium conveyed by the conveying section. The mark printing section is configured to perform printing of a mark on the medium conveyed by the conveying section. The controller is configured to cause, based on a result of the detection by the medium sensor, the mark printing section to perform the printing of the mark on the medium, from a timing at which image formation on the medium by the image forming section is completed.

Abstract: A medical apparatus (600) including: a magnetic resonance imaging system (602), a medical device (634), and a slip ring assembly (400, 500) for supplying electrical power to the medical device. The slip ring assembly includes: a cylindrical body (100), a rotating member (402) for rotating the medical device, a first cylindrical conductor attached to the cylindrical body, a second cylindrical conductor (108), a first set of conductive elements (112, 712) connected to the second cylindrical conductor; and a brush assembly (406) comprising a first brush (302) and a second brush (304). The first brush is operable to contact the first cylindrical conductor. The second brush is operable to contact the set of conductive elements. The first and second cylindrical conductive elements overlap at least partially. The second cylindrical conductor is connected to the cylindrical body. The first cylindrical conductor and the second cylindrical conductors are electrically isolated.

Abstract: A magnetic resonance multi-core array radio frequency device and a magnetic resonance signal receiving method are provided. The device comprises a radio frequency receiver which includes a radio frequency coil (11), a low noise preamplifier (13), a multiplexer (15), a radio frequency band-pass filter (17), a program control amplifier (19), a frequency synthesizer (21), a mixer (23), an analog to digital converter (29) and a controller (31). The controller (31) is used for controlling the multiplexer (15) to select a corresponding radio frequency coil channel, a corresponding filtering channel, gain of the radio frequency band-pass filter (17), and receiving a magnetic resonance digital signal transmitted by the analog to digital converter (29). Due to the multiplexer (15), there is no need to configure different circuits respectively for different nuclear magnetic resonance, redundancy of the circuits is reduced, and cost is reduced.

Abstract: In a magnetic resonance apparatus and method for RF excitation with two resonance frequencies to detect the CEST effect, the RF excitation is achieved with the use of a first RF antenna and a second RF antenna of the magnetic resonance apparatus with a first portion of the RF excitation at a first resonance frequency of the two resonance frequencies being implemented with the first RF antenna, and a second portion of the RF excitation at a second resonance frequency of the two resonance frequencies is implemented with the second RF antenna.

Abstract: In order to obtain a high-quality image even in multi-slice imaging in a UTE sequence that uses a half RF pulse, a refocusing pulse of the slice gradient magnetic field is adjusted and applied so that the excitation profiles of positive polarity data and negative polarity data have phase distributions that are 180 [deg] inverted with respect to each other in side lobe portions. In addition, the irradiation frequency of the half RF pulse is adjusted so as to eliminate a position shift between the intensity distributions of the positive polarity data and the negative polarity data.