Patent application number | Description | Published |
20110033594 | Edible oil having excellent storage stability, and method for production thereof - Disclosed is an edible oil which is hardly deteriorated by oxidation and therefore has excellent storage stability. Also disclosed is a method for producing the edible oil. A nitrogen gas in the form of nanobubbles each having a diameter of less than 1000 nm (1 μm) and microbubbles each having a diameter of 1 to 350 μm (inclusive) is added to an edible oil. In this manner, it becomes possible to produce an edible oil having a content of nitrogen in the oil or a content of dissolved nitrogen in the oil of 4.5% (by volume) or more and an edible oil containing nitrogen nanobubbles each having a diameter of less than 1000 nm (1 μm) and nitrogen microbubbles each having a diameter of 1 to 350 μm (inclusive). | 02-10-2011 |
20110111112 | OIL-AND-FAT COMPOSITION, AND FOOD OR BEVERAGE CONTAINING THE OIL-AND-FAT COMPOSITION - Disclosed is an oil-and-fat composition having a high α-linolenic acid content, a hypertension-ameliorating effect, a good flavor, and good storage stability. Also disclosed is a food or beverage containing the oil-and-fat composition. The oil-and-fat composition comprises at least one plant oil A selected from flax oil, perilla oil and perilla seed oil, rice oil, and at least one plant oil B selected from rape seed oil, soybean oil and corn oil at a ratio among the plant oil A, rice oil and the plant oil B [i.e., a (plant oil A)/(rice oil)/(plant oil B) ratio] of 20-35/15-25/40-65 by mass, wherein the α-linolenic acid content in the constituent fatty acids contained in the oil-and-fat composition is 15 to 30 mass %. | 05-12-2011 |
Patent application number | Description | Published |
20090189721 | SUPERCONDUCTING MAGNET AND MAGNETIC RESONANCE IMAGING APPARATUS - In a superconducting magnet, including a vacuum vessel, a coil vessel inside the vacuum vessel, and a superconducting coil inside the coil vessel for generating a magnetic field, has a magnetic member, disposed inside the vacuum vessel, supported with thermal insulation, for compensating the magnetic field; a heat exchange device disposed outside the vacuum vessel for supplying to or absorbing heat from the vacuum vessel; and thermal conducting members thermally connecting the heat exchange device via the vacuum vessel to the magnetic member. An MRI including the superconducting magnet is also disclosed. | 07-30-2009 |
20090201020 | MAGNETIC RESONANCE APPARATUS UTILIZING TIME-VARYING RATE OF MAGNETIC RESONANT FREQUENCY - The present invention provides a magnetic resonance imaging system capable of performing spectrum measurement even when a magnetic resonant frequency changes during MRS measurement. A time-varying rate of a water magnetic resonant frequency is measured in advance before the MRS measurement. The amount of change in water magnetic resonant frequency during the MRS measurement is predicted from the measured time-varying rate. With the predicted value as the reference, a transmission frequency of an RF magnetic field irradiated in a signal suppression pulse sequence, a transmission frequency of an RF magnetic field for excitation and inversion and a received frequency at the detection of a magnetic resonance signal in a sequence of the MRS measurement are respectively set. A high-precision spectrum measurement is hence enabled. | 08-13-2009 |
20100033177 | Inspection Apparatus using Magnetic Resonance and Nuclear Magnetic Resonance Signal Receiver Coil - An MRI apparatus capable of selecting an optional direction as a phase encoding direction and achieving a preferable S/N, when an imaging time shortening technique is applied. A receiver coil, used as a receiver coil of a vertical magnetic field MRI apparatus, is a combination of a first coil (solenoid coil) forming a current loop around the outer circumference of a test object, second coils forming even-numbered current loops, and third coils forming odd-numbered current loops, in the direction intersecting the plane of the current loop of the first coil. The second coil and the third coil are arranged in such a manner that, as for the current loops in the array direction thereof, a position where a sensitivity of one coil is minimized approximately coincides with a position where the sensitivity of the other coil is maximized, whereby electromagnetic coupling is suppressed. | 02-11-2010 |
20100253347 | ANTENNA SYSTEM AND MAGNETIC RESONANCE IMAGING APPARATUS - An RF coil is provided with a hollow-shaped outer conductive element and strip-shaped conductive elements disposed along the outer conductive element in the axial direction. The strip-shaped conductive elements are disposed with uneven intervals to secure an internal space at a position where the strip-shaped conductive elements are not disposed. In order to obtain uniform sensitivity at the center section of the RF coil, the strip-shaped conductive elements and the outer conductive element are electrically connected via capacitors of which capacitances are adjusted so that a magnetic field component perpendicular to the center axis should be generated at a desired resonance frequency, and the strip-shaped conductive elements are axisymmetrically disposed with respect to the center axis of the outer conductive element. As a result, a comfortable examination space in a tunnel type MRI apparatus is achieved without increasing the manufacturing cost of the MRI apparatus. | 10-07-2010 |
20110112393 | MAGNETIC RESONANCE IMAGING DEVICE - In the diffusion-weighted imaging, amounts of distortion and amounts of phase offset of k-space data due to a temporally changing magnetic field error induced by eddy currents and vibrations associated with application of a diffusion-weighted gradient magnetic field pulse are corrected with good precision to improve image quality. Characteristic data for correcting distortion of k-space data are calculated for every position in the slice direction as peak shifts of projections observed between the cases of applying and not applying an MPG pulse. As the characteristic data, amounts of distortion in the read-out direction and the phase encoding direction and phase offset amounts in a slice plane are calculated. | 05-12-2011 |
20110175616 | Nuclear Magnetic Resonance Imaging System and Coil Unit - There is provided a coil unit having a large region of homogeneous sensitivity for the axial direction even with a shortened rung length of birdcage type RF coil. | 07-21-2011 |
20120176137 | GRADIENT MAGNETIC FIELD COIL AND MAGNETIC RESONANCE IMAGING DEVICE - In the magnetic resonance imaging device, the distance between the first and second coils is different in the circumferential direction and has a first region (A | 07-12-2012 |
20120262173 | HIGH-FREQUENCY COIL UNIT AND MAGNETIC RESONANCE IMAGING DEVICE - There is provided a technique for securing a large examination space in a tunnel type MRI device without inviting increase of manufacturing cost and without significantly reducing irradiation efficiency or uniformity of the irradiation intensity distribution in an imaging region. Between rungs of a partially cylindrical RF coil, which coil corresponds to a cylindrical RF coil of which part is removed, there are disposed half-loops generating magnetic fields, which are synthesized with magnetic fields generated by loops constituted by adjacent rungs of the partially cylindrical RF coil and rings connecting the rungs to generate a circularly polarized or elliptically polarized magnetic field. Further, high-frequency signals of the same reference frequency having a desired amplitude ratio and phase difference are supplied to the partially cylindrical RF coils and half-loops. | 10-18-2012 |
20120299594 | ANTENNA DEVICE - There is provided a technique for securing a comfortable examination space in a tunnel type MRI apparatus without increasing the manufacturing cost of the MRI apparatus and sacrificing performance thereof. In an RF coil provided with a hollow-shaped outer conductive element and a strip-shaped conductive element disposed along the outer conductive element in the axial direction, meander lines constituting the strip-shaped conductive element are disposed at uneven distances from the outer conductive element to secure an internal space. In order to obtain uniform sensitivity at the center of the RF coil, the strip-shaped conductive element is constituted with N of connected meander lines, and length of the strip-shaped conductive element is adjusted so that, in the strip-shaped conductive element resonating at resonance frequency of the antenna, nodes are formed in a number of (M+1)×N−1, wherein M is 0 or a natural number of 1 or larger. | 11-29-2012 |
20130119991 | HIGH-FREQUENCY COIL AND MAGNETIC RESONANCE IMAGING DEVICE EMPLOYING SAME - A technique is provided to reserve large examination space in the tunnel type MRI apparatus, without increasing production cost nor reducing significantly irradiation efficiency and homogeneity in an irradiation distribution within an imaging region. The present invention provides an RF coil unit in which four partial cylindrical coils are placed with a gap therebetween in the circumferential direction inside a cylindrical RF shield, in such a manner that two pairs of the partial cylindrical coils are opposed to each other, and magnetic fields produced by the individual partial cylindrical coils are combined, thereby producing a circularly polarized wave field or an elliptically polarized wave field. The partial cylindrical coil is provided with a partial cylindrical conductor, multiple first conductors substantially parallel with the central axis of the RF shield, multiple capacitors connecting both ends of the first conductors with the partial cylindrical conductor, and a second conductor adjacent to at least one of the ends of the first conductor. The partial cylindrical coils are respectively provided with high frequency signals having a desired amplitude ratio and phase difference, while a reference frequency thereof being identical. | 05-16-2013 |
20130221968 | ANTENNA DEVICE AND MAGNETIC RESONANCE IMAGING DEVICE - There is provided a technique for suppressing increase of SAR without sacrificing sensitivity in RF coils used in MRI apparatuses. The present invention provides an antenna device comprising a sheet-shaped conductor and a ribbon-shaped conductor disposed on the subject side with respect to the sheet-shaped conductor with a predetermined distance from the sheet-shaped conductor. The ribbon-shaped conductor has a meandering shape, and is adjusted so as to resonate at transmission and reception frequencies, and it is constituted so that distance to the sheet-shaped conductor becomes smaller at both end part thereof along the static magnetic field direction compared with the distance to the sheet-shaped conductor at the center thereof. Moreover, the ribbon-shaped conductor is constituted so as to have a smaller width, as the distance to the sheet-shaped conductor becomes smaller. | 08-29-2013 |
20130335088 | GRADIENT COIL DEVICE AND MAGNETIC RESONANCE IMAGING DEVICE - A gradient coil device includes a major axis gradient coil, having an ellipse in a cross section generating a gradient magnetic field inclined in a major axis direction of the ellipse at a magnetic field space; and a minor axis gradient coil, having an ellipse in a cross section generating a gradient magnetic field inclined in a minor axis direction of the ellipse at the magnetic field space. A length of the minor axis field coil in the center axis direction is shorter than a length of the major axis gradient coil in the center axis direction. A maximum value of a residual magnetic field generated by the minor axis gradient coil at a space outside the magnetic field space is equal to or smaller than a maximum value of a residual magnetic field generated by the major axis gradient coil at a space outside the magnetic field space. | 12-19-2013 |
Patent application number | Description | Published |
20090066332 | MAGNETIC RESONANCE IMAGING APPARATUS AND GRADIENT MAGNETIC FIELD COIL - An MRI apparatus excellent in magnetic field generation efficiency is provided. According to this invention, a main coil ( | 03-12-2009 |
20100013478 | MAGNETIC RESONANCE IMAGING DEVICE - A magnetic resonance imaging device includes magnetic field generating means and control means for controlling receiving means according to a predetermined pulse sequence, the predetermined pulse sequence including an unnecessary material suppressing sequence unit for canceling a signal from an unnecessary material which is not a measurement target and a main imaging sequence unit for measuring a nuclear magnetic resonance signal used to create an image of an examinee. The unnecessary material suppressing sequence unit generates at least two or more high frequency magnetic field pulses so that the longitudinal magnetization of the unnecessary material is made spatially uniform in the imaging space under application of a first high frequency magnetic field pulse in the main imaging sequence unit. The magnetic resonance imaging device further includes adjusting means for adjusting the flip angles of the two or more high frequency magnetic field pulses, and the control means applies the two or more high frequency magnetic field pulses at the flip angles adjusted by the adjusting means. | 01-21-2010 |
20100156418 | MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD - In order to stably obtain an even fat-suppressed image without reduction of an imaging efficiency and without being affected by unevenness of irradiation magnetic field of an RF pulse, when an imaging sequence having a first sequence part for suppressing a signal from a desired component of an examinee by applying a CHESS pulse and a second sequence part for measuring an echo signal from the examinee is repeated, the flip angle of the CHESS pulse is changed at plural times. In the case of multi-slice imaging, the flip angle of the CHESS pulse is changed in at lest two slice imaging. | 06-24-2010 |
20110267060 | MAGNETIC RESONANCE IMAGING DEVICE - A magnetic resonance imaging device includes magnetic field generating means and control means for controlling receiving means according to a predetermined pulse sequence, the predetermined pulse sequence including an unnecessary material suppressing sequence unit for canceling a signal from an unnecessary material which is not a measurement target and a main imaging sequence unit for measuring a nuclear magnetic resonance signal used to create an image of an examinee. The unnecessary material suppressing sequence unit generates at least two or more high frequency magnetic field pulses so that the longitudinal magnetization of the unnecessary material is made spatially uniform in the imaging space under application of a first high frequency magnetic field pulse in the main imaging sequence unit. The magnetic resonance imaging device further includes adjusting means for adjusting the flip angles of the two or more high frequency magnetic field pulses, and the control means applies the two or more high frequency magnetic field pulses at the flip angles adjusted by the adjusting means. | 11-03-2011 |
20120098535 | MAGNETIC RESONANCE IMAGING APPARATUS AND EDDY CURRENT COMPENSATION METHOD - An object is to correct a magnetic field caused by an eddy current, which is generated due to application of a gradient magnetic field, not only in the application direction of the gradient magnetic field but also in a direction different from the application direction of the gradient magnetic field. In the present invention, in order to achieve this object, a compensation magnetic field which compensates for an eddy current magnetic field generated in each of an application direction of a test gradient magnetic field and a direction different from the application direction in each direction is calculated using the test gradient magnetic field. When generating an arbitrary gradient magnetic field, a compensation magnetic field which compensates for an eddy current magnetic field according to application of an arbitrary gradient magnetic field on the basis of the measured eddy current magnetic field in each direction is generated together with the arbitrary gradient magnetic field. | 04-26-2012 |
20130147481 | MAGNETIC RESONANCE IMAGING APPARATUS AND VIBRATIONAL ERROR MAGNETIC FIELD REDUCTION METHOD - Regardless of the measurement conditions, the degradation of the image quality due to a vibrational error magnetic field, which is generated by the vibration of the mechanical structure of an MRI apparatus, is reduced. In order to do so, error magnetic field image data indicating an error magnetic field distribution is acquired on the basis of an echo signal measured using a pulse sequence having a test gradient magnetic field, a parameter value of a damped vibration function showing a vibrational error magnetic field is calculated using the error magnetic field image data, and a correction magnetic field is calculated on the basis of the calculated parameter value of the damped vibration function showing the vibrational error magnetic field. | 06-13-2013 |
20140253126 | MAGNETIC RESONANCE IMAGING APPARATUS AND ANTENNA DEVICE - In order to provide a technique which can suppress coupling to homogenize the spatial distribution of an RF magnetic field and can improve penetration of the RF magnetic field into the subject, pad-like electric field conductors having a predetermined area are provided outside both ends of a rung conductor as a part of a configuration which forms a loop-like circuit and is driven as an antenna. An antenna device includes a sheet-like conductor, a rung conductor which is arranged at a predetermined distance from the sheet-like conductor, two electric field conductors which are arranged in both end portions of the rung conductor at a predetermined distance from the sheet-like conductor, and connection terminals which are transmission and reception terminals provided in the rung conductor and the sheet-like conductor. The rung conductor and the sheet-like conductor configure a loop circuit which resonates at a preset frequency. | 09-11-2014 |
20140292334 | Magnetic resonance imaging equipment, high frequency magnetic field irradiation method and program - With minimizing extension of imaging time, the B | 10-02-2014 |
20150016224 | SIGNAL PROCESSING APPARATUS, OBJECT DETECTING APPARATUS, APPARATUS PROVIDED WITH OBJECT DETECTING FUNCTION, AND OBJECT DETECTING METHOD - Provided is a technology which is able to detect an object with high accuracy. A signal processing apparatus | 01-15-2015 |
20150293197 | MAGNETIC RESONANCE IMAGING APPARATUS AND METHOD FOR CALCULATING PULSE SEQUENCE TO BE CARRIED ON MAGNETIC RESONANCE IMAGING APPARATUS - When imaging is performed by executing a pulse sequence on an MRI apparatus, silencing is realized with securing sufficient application amount of crusher without extending the application time thereof. In the pulse sequence carried by the MRI apparatus, at least one gradient magnetic field pulse included in the pulse sequence has a waveform synthesized from two or more base waves shifting along the time axis direction (synthesized waveform), and the base waves have a smoothly changing waveform convex upward. The pulse of the synthesized waveform is generated from one or more trapezoidal or triangular base pulses by a waveform conversion part of a computer of the MRI apparatus or an external computer. | 10-15-2015 |
Patent application number | Description | Published |
20090016704 | INFORMATION REPRODUCTION DEVICE, INFORMATION REPRODUCTION METHOD, AND INFORMATION REPRODUCTION PROGRAM - Even when the frame identifying pattern at the head is misjudged or cannot be obtained, the frame identifying pattern that follows on and the frame corresponding to that frame identifying pattern are acquired and are held, and the position of the frame is judged on the basis of the information of the frame identifying pattern at a timing when the acquired frame identifying pattern is switched, and the positions of all the frames which have been acquired until then are calculated uniquely. Therefore, even when the preamble identifying pattern cannot be correctly detected due to such as flaws, the positions of the frames in the blocks are correctly detected, and the data can be certainly demodulated. | 01-15-2009 |
20150147042 | IMAGING APPARATUS AND IMAGING METHOD - The present disclosure aims to achieve a more effective image in slow motion. An imaging apparatus of the present disclosure includes an image sensor that outputs image data at a first frame rate and an image processor. The image processor: (i) generates motion image data having a second frame rate that is 1/N of the first frame rate, based on the image data having the first frame rate output from the image sensor, for frames not provided with a given instruction, (ii) generates motion image data having the first frame rate based on the image data having the first frame rate output from the image sensor, for frames provided with a given instruction and (iii) processes the generated motion image data having the first frame rate and the generated motion image data having the second frame rate as a series of motion image data. | 05-28-2015 |
Patent application number | Description | Published |
20140378049 | COMMUNICATION SYSTEM, COMMUNICATION TERMINAL APPARATUS, STORAGE MEDIUM HAVING STORED THEREIN COMMUNICATION PROGRAM, AND COMMUNICATION METHOD - A communication terminal apparatus includes an antenna controller and a target-side data transceiver. Before data communication is performed with an information processing apparatus via an antenna of the communication terminal apparatus, the antenna controller changes at least one of a resistive component of the antenna, voltage to be applied to the antenna, and current to be applied to the antenna, thereby changing a state of the antenna to cause a change in a magnetic field that results from the change in the state of the antenna and can be sensed by the information processing apparatus. After the antenna controller has changed the state of the antenna, the target-side data transceiver performs the data communication with the information processing apparatus. | 12-25-2014 |
20150324773 | SETTLEMENT SYSTEM, USER TERMINAL DEVICE, SALES SERVER, SETTLEMENT SERVER AND RECORDING MEDIUM - An example system includes: a sales server for performing sales processing pertaining to sales of a commodity; a settlement server for performing settlement processing pertaining to a commodity sold by the sales server in the sales processing; and a user terminal device having a communication unit configured to communicate with the sales server and with the settlement server via a network and an operation acceptance unit configured to accept operation pertaining to purchase of the commodity. The user terminal device has: a settlement request relay unit configured to receive a settlement request pertaining to a commodity, for which operation pertaining to purchase has been accepted by the operation acceptance unit, from the sales server and transmit the received settlement request to the settlement server; and a settlement information relay unit configured to receive settlement information pertaining to the result of the settlement processing from the settlement server and transmit the received settlement information to the sales server. | 11-12-2015 |