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| Number | Title | Issue Date |
| 7679365 | Current lead of superconducting magnet of magnetic resonance system A current lead for the superconducting magnet of a magnetic resonance system, the superconducting magnet being refrigerated by a cold head, has a positive current lead and a negative current lead electrically connected to the superconducting magnet for magnetization... | 03/16/2010 |
| 7667462 | Nuclear magnetic resonance module A nuclear magnetic resonance apparatus that may be used in connection with a variety of different tools, including a down-hole side-wall coring tool as well as with manufacturing process controllers. In one embodiment, the nuclear magnetic resonance apparatus may in... | 02/23/2010 |
| 7639013 | Thermal controlling method, magnetic field generator and MRI apparatus With a view toward implementing a thermal controlling method for making reversible a temperature characteristic of a magnetic field generator using permanent magnets small in Hcj, a magnetic field generator whose temperature characteristic is reversible, using perma... | 12/29/2009 |
| 7615998 | Method and apparatus for actively controlling quench protection of a superconducting magnet A method and apparatus for actively controlling quench protection of a superconducting magnet includes a magnetic resonance imaging (MRI) system and a computer readable storage medium having stored thereon a computer program comprising instructions which when execut... | 11/10/2009 |
| 7579837 | Arrangement for magnetic field measurement The invention concerns an arrangement for magnetic field measurement of a measurement object (in particular a gradient coil in a magnetic resonance apparatus) with a magnetic field sensor that is designed to measure a magnetic field of the measurement object and wit... | 08/25/2009 |
| 7541812 | MRI apparatus, NMR analyzer, and gantry A magnetic resonance imaging apparatus includes a static magnetic field generating unit, a main coil (gradient magnetic coil), a radio frequency coil, and a shimming structure unit. The shimming structure unit includes first iron shims and second iron shims. The fir... | 06/02/2009 |
| 7541811 | Apparatus for electron spin resonance CT A compact, lightweight, and easy-to-use ESR-CT apparatus including a magnetic field leak line (5-G line) which is capable of imaging a small animal, such as a mouse, within 15 minutes, and of observing a desired region with a spatial resolution of 1 mm or less. A pe... | 06/02/2009 |
| 7538553 | Magnetic structure for MRI machines and MRI machine particularly for orthopedic of rheumatologic applications Magnetic structure for MRI machines, which machine has a U-shaped or annular, that is O-shaped geometry having two opposite poles between which a magnetic field is generated and are borne at a predetermined distance one with respect to the other by a magnetic yoke h... | 05/26/2009 |
| 7518370 | Low eddy current vacuum vessel and method of making same A vacuum vessel assembly includes an inner cylinder and an outer cylinder formed of a material in which eddy currents are substantially not produced. The inner cylinder includes a first and second half having an annular flange thereon. A plurality of metal interface... | 04/14/2009 |
| 7514928 | Superconducting magnet configuration with reduced heat input in the low temperature regions The invention concerns a magnet configuration comprising a superconducting magnet coil (1) within which a gradient system is to be switched. All low temperature oscillation systems (R1) with a temperature T1 | 04/07/2009 |
| 7504826 | Superconducting magnet and MRI apparatus using the same A superconducting magnet of the present invention includes a switching element that closes its output side (operation side) when the voltage on its input side is smaller than a predetermined value and opens the output side when the voltage on the input side is large... | 03/17/2009 |
| 7468606 | Vacuum housing for a magnetic resonance apparatus Disclosed is a vacuum housing for a magnetic resonance apparatus having a recess for leading through lead wires to elements located inside the vacuum housing, and a first lead-through bushing module. The first lead-through bushing module is provided with a first clo... | 12/23/2008 |
| 7466133 | Systems, methods and apparatus of a magnetic resonance imaging system to produce a stray field suitable for interventional use Systems, methods and apparatus are provided through which in some embodiments a magnetic resonance imaging (MRI) system includes one or more magnetic shield coils positioned asymmetrically in the casing and also positioned in close proximity to one of two apertures ... | 12/16/2008 |
| 7423431 | Multiple ring polefaceless permanent magnet and method of making A permanent magnet assembly for an imaging apparatus having a permanent magnet body having a first surface and a stepped second surface which is adapted to face an imaging volume of the imaging apparatus, wherein the stepped second surface contains at least four ste... | 09/09/2008 |
| 7420372 | Magnetic resonance device There is described a magnetic resonance device incorporating at least one first component part, which when the magnetic resonance device is operating oscillates, attached by at least one local load-bearing joint to at least one second oscillation-sensitive component... | 09/02/2008 |
| 7408349 | Configurable matrix receiver A configurable matrix receiver comprises a plurality of antennas that detect one or more signals. The antennas are coupled to a configurable matrix comprising a plurality of amplifiers, one or more switches that selectively couple the amplifiers in series fashion, a... | 08/05/2008 |
| 7403011 | Self-shielded packaging for circuitry integrated with receiver coils in a imaging system An improved magnetic resonance (MR) imaging system (10) is provided. A plurality of receiver coils (12) may be configured to supply respective coil output signals based on a plurality of magnetic resonance response signals sensed by the receiver coils.... | 07/22/2008 |
| 7403009 | Magnetic gradient winding system comprising circular solenoid coils In order to produce field strength gradients (x,y) for a NMR machine, the curve-shaped gradients are substituted by coils arraigned in tubes. Said tubes are distributed on the annular circumference (6) of the examination space of the tunnel NMR machine. Said ... | 07/22/2008 |
| 7397244 | Gradient bore cooling providing RF shield in an MRI system A magnetic resonance imaging (MRI) device for imaging a volume includes a main magnet for generating a magnetic field, an insulator sheet formed into a tube extending along an axis, a gradient coil disposed on an outside surface defining the tube for manipulating th... | 07/08/2008 |
| 7394255 | Single-sided magnetic resonance magnet assembly Magnetic resonance apparatus is provided comprising a magnet having a plurality of pairs of coils arranged in respective substantially parallel planes. The coils in each pair are operable in a counter-running manner when in use so as to generate a region of magnetic... | 07/01/2008 |
| 7394927 | Iterative method of determining a spatial distribution of values of a property An iterative method determines a spatial distribution of values of a property of an object, and particularly values of its absorption, in an examination region, on the basis of measured values that values are acquired with a measuring device, and particularly with a... | 07/01/2008 |
| 7391215 | NMR apparatus A magnetic assembly for a nuclear magnetic resonance apparatus includes a number of primary permanent magnets 1 disposed in an array about a longitudinal axis, the arrangement and/or characteristics of the plurality of magnets being such so as to create a zon... | 06/24/2008 |
| 7382134 | Superconducting magnet apparatus for MRI In a superconducting magnets for MRI configured to generate a homogeneous magnetic field and a gradient magnetic field in a space between a top superconducting magnet and a bottom superconducting magnet, the bottom superconducting magnet is provided with a supportin... | 06/03/2008 |
| 7375528 | Shielded, asymmetric magnets for use in magnetic resonance imaging Magnetic resonance systems are provided which employ a shielded, asymmetric magnet to produce an offset dsv. The magnets include at least a first coil C1, which carries current in a first direction, and two coils C2 and C3, which are... | 05/20/2008 |
| 7372275 | Gradient coil apparatus and method of assembly thereof A gradient coil assembly and a method for manufacturing the gradient coil assembly is provided. The gradient coil assembly includes an insulator sheet formed into a tube extending along an axis. The assembly further includes a first electrically conductive sheet dis... | 05/13/2008 |
| 7372273 | High temperature superconducting current leads for superconducting magnets An electrical current lead assembly for ramping a superconducting magnet includes a vacuum vessel wall that has a first side exposed to an atmospheric pressure and a second side exposed to a vacuum pressure. A pool wall extends from the first side of the vacuum vess... | 05/13/2008 |
| 7372274 | Methods and devices configured for dissolving hyperpolarised solid material with a solvent within a cryostat for NMR analyses The present invention relates to devices and method for dissolving solid polarised material while retaining a high level of polarisation. In an embodiment of the present invention a material is polarised in a strong magnetic field in a cryostat 2 and then bro... | 05/13/2008 |
| 7372271 | Main magnet perforated eddy current shield for a magnetic resonance imaging device The present invention relates to a magnetic resonance imaging (MRI) device. The basic components of an MRI device are the main magnet system (2), the gradient system (3), the RF system and the signal processing system. According to the present inventio... | 05/13/2008 |
| 7372265 | Compensation of magnetic field disturbances due to vibrations in an MRI system A magnetic resonance imaging (MRI) system includes an examination volume (9), a main magnet system (17) for generating a main magnetic field (B0) in the examination volume, a gradient magnet system (25) for generating gradients of the... | 05/13/2008 |
| 7366559 | Nuclear magnetic resonance apparatus and method for assessing whole body composition A method is disclosed for measuring whole body composition. The method includes confining movement of the body to a selected volume, inducing a static magnetic field in the volume, inducing a pulsed radio frequency magnetic field in the volume, and receiving nuclear... | 04/29/2008 |
| 7358726 | System of generating a magnetic field and MRI system using the system of generating a magnetic field An MRI system using an open type magnet, wherein two coils different in radius for generating gradient magnetic fields in a vertical direction are arranged in the open type magnet for generating a static magnetic field in the vertical direction. Currents are caused ... | 04/15/2008 |
| 7358734 | Single-sided NMR sensor with microscopic depth resolution A low-cost single-sided NMR sensor to produce depth profiles with microscopic spatial resolution is presented. The open geometry of the NMR sensor provides a non-invasive and non-destructive testing method to characterize the depth structure of objects of arbitrary ... | 04/15/2008 |
| 7358736 | Low temperature probe for NMR and NMR device The invention provides a low temperature probe having a high sensitivity by reducing a heat intrusion into a receive coil. A heat making an intrusion into a coil is suppressed by inserting a heat radiation shield in which a temperature is controlled at about 100 K t... | 04/15/2008 |
| 7355499 | Magnet assembly A magnet assembly comprising first and second sets of coils (1, 2) for generating respective magnetic fields, wherein the coils are constructed and arranged such that under working conditions, a first homogeneous region (3) can be generated within the ... | 04/08/2008 |
| 7352184 | MRI apparatus with high-resistance magnet Eddy current generated around a magnetic circuit in an MRI apparatus is one of the causes of deviation from an ideal magnetic field gradient waveform and causes image distortion, loss of strength, ghost generation, loss of signal, and spectral distortion. An object ... | 04/01/2008 |
| 7352183 | Method and apparatus for locally shielding MR superconducting magnet coil A method and apparatus for local grading shielding includes a gradient shield loop having a plurality of arcs positioned adjacent to a superconducting magnet coil. The plurality of arcs magnetically couple with a gradient magnetic field generated by a magnetic field... | 04/01/2008 |
| 7348780 | Asymmetric radio frequency coils for magnetic resonance Asymmetric radio frequency (RF) coils for magnetic resonance applications are provided. Also provided are time harmonic methods for designing such coils as well as symmetric coils. In addition, methods for converting complex current density functions into discrete c... | 03/25/2008 |
| 7343191 | MRI system In one example, an illumination system is provided in an MRI system including an open MRI assembly comprising a pole covered by a canopy. The MRI system is within a shielded room. A light source is provided outside of the shielded room, at least one light projector ... | 03/11/2008 |
| 7336077 | Magnet for NMR analyzer and NMR analyzer using the same A magnet for an NMR analyzer includes a superconductor coil for generating a magnetic field in a magnetic space surrounded by the superconductor coil. The superconductor coil has a shim coil group disposed at least one of inside and outside of the superconducting co... | 02/26/2008 |
| 7336075 | Mounting device for monitoring a local gradient coil unit in a gradient coil system A mounting device for a local gradient coil unit for mounting same in the examination area of a magnetic resonance unit has one or more guide rails, which are able to be arranged in the examination area, supporting the gradient coil unit, with a locator structure fo... | 02/26/2008 |