Patent application number | Description | Published |
20090045894 | Method and device for generating a homogeneous magnetic field in an area of interest, especially for NMR imaging - The device for creating a uniform magnetic field in a zone of interest, in particular for nuclear magnetic resonance and magnetic resonance imaging, comprises an arrangement of superconductor coils disposed around a longitudinal axis (z) of the zone of interest. This arrangement of coils comprises at least one stack of a set of modular elements ( | 02-19-2009 |
20090096451 | Nmr Machine Comprising Solenoid Gradient Coils which are Incorporated into Tubes - The nuclear magnetic resonance machine comprises a device ( | 04-16-2009 |
20090140737 | Nmr Machine Comprising Solenoid Gradient Coils - The nuclear magnetic resonance machine comprises a device ( | 06-04-2009 |
20100271024 | NMR IMAGING SYSTEM WITH REDUCED CRYOGENIC LOSSES AND REDUCED ACOUSTIC NOISE - The magnetic resonance imaging system includes an exterior cryogenic enclosure containing a device for creating an intense main magnetic field in a usable interior space in the form of a tunnel, a radio-frequency excitation device, a set of solenoid gradient windings placed in a cylindrical annular space around the interior space and electronic control circuits. The toroidal cryogenic enclosure includes concentrically a vacuum enclosure defining an interior cylindrical space at room temperature in which the set of solenoid gradient windings is placed, at least one thermal screen maintained at a temperature in the range 20 K to 80 K, a cold box at a temperature less than 5 K, and a former for supporting the device for creating an intense main magnetic field. Furthermore, to reduce acoustic noise and cryogenic losses, at least one additional envelope is placed between the set of solenoid gradient windings and the vacuum enclosure, the additional envelope being made of a conductive material having electrical resistivity greater than or equal to 7×10 | 10-28-2010 |
20110291781 | ASSEMBLY OF MAGNETISED COAXIAL STRUCTURES INDUCING A LONGITUDINAL HOMOGENEOUS FIELD IN THE CENTRE THEREOF - The magnetized structure that induces in a central area of interest a homogeneous magnetic field oriented along a longitudinal axis (z) of the structure comprises first and second magnetized rings ( | 12-01-2011 |
20120013338 | MAGNETISED STRUCTURE INDUCING A HOMOGENEOUS FIELD, IN THE CENTRE THEREOF, WITH A PRE-DETERMINED ORIENTATION - A magnetized structure that induces in a central area of interest a homogeneous magnetic field of predetermined orientation relative to a longitudinal axis (z) of the structure comprises at least two magnetized rings ( | 01-19-2012 |
20120098539 | CYLINDRICAL PERMANENT MAGNET DEVICE GENERATING A CONTROLLED MAGNETIC FIELD AT A DISTANCE FROM THE SURFACE THEREOF - The cylindrical permanent magnet device includes at least one basic structure ( | 04-26-2012 |
20120098630 | CYLINDRICAL PERMANENT MAGNET DEVICE WITH AN INDUCED MAGNETIC FIELD HAVING A PREDETERMINED ORIENTATION, AND PRODUCTION METHOD - A cylindrical permanent magnet device that induces in a central area of interest a homogeneous magnetic field of predetermined orientation relative to a longitudinal axis (z) of the device comprises first and second annular magnetized structures ( | 04-26-2012 |
20130193973 | Permanent Magnet Device for Generating an Offset Uniform Magnetic Field - Disclosed is a device for generating a homogeneous magnetic field component Bz along an axis Oz in a spherical zone of interest of centre O and radius r includes at least one first ring of axis Oz in magnetic material with radial magnetization oriented in a first direction and extending around an opening giving access to the zone of interest ZI, a second ring of axis Oz in magnetic material with radial magnetization oriented in the first direction and offset along axis Oz from the first ring and the zone of interest ZI, the inner radius and the outer radius of the second ring respectively being smaller than the inner radius and outer radius of the first ring. | 08-01-2013 |
20130207658 | Superconducting Magnet Device - Disclosed is a compact superconducting magnet device for generating an intense and homogeneous magnetic field component Bz along an axis Oz in a zone of interest ZI successively includes, starting from the axis Oz, at least two coaxial superconducting helical coils formed around circular cylinder sections of axis Oz delimited by end circles. The lateral ends of the helical coils are arranged, to within the thickness of the coils, in the vicinity of one same sphere of radius c whose centre O is placed on the axis Oz at the centre of the zone of interest ZI and which encompasses the magnetic device assembly. The azimuthal current densities j | 08-15-2013 |
20130265124 | Compact Superconducting Magnet Device - Disclosed is a compact superconducting magnet device for generating an intense and homogeneous magnetic field component Bz along an axis Oz in a zone of interest ZI successively includes, starting from the axis Oz, at least three coaxial superconducting helical coils formed around circular cylinder sections of axis Oz delimited by end circles. The lateral ends of the helical coils are arranged, to within the thickness of the coils, in the vicinity of one same sphere of radius c whose centre O is placed on the axis Oz at the centre of the zone of interest ZI and which encompasses the magnetic device assembly. The azimuthal current densities j | 10-10-2013 |
20140167893 | Device For Generating An Orientable And Locally Uniform Magnetic Field - Device for generating an orientable and locally uniform magnetic field, including N≧3 identical assemblies of cylindrical coils, each assemblies having a first and a second coil, the coils being coaxial with an axis oriented along a direction z and arranged symmetrically on either side of the plane, with a gap in the axial direction, the assemblies arranged such that their outlines in a plane xy perpendicular to the z-axis are regularly spaced along a circle of centre O and of radius a | 06-19-2014 |