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7626477 |
Cold mass cryogenic cooling circuit inlet path avoidance of direct conductive thermal engagement with substantially conductive coupler for superconducting magnet
A cold mass for a superconducting magnet system in one example comprises a superconducting magnet, a cryogenic cooling circuit, and a magnet and cooling circuit support. The magnet and cooling...
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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...
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7609062 |
Magnetic resonance device with a patient support table and a main field magnet
Magnetic resonance device comprises a patient support table and a main field magnet. The main field magnet is supported so that it can be rotated around at least one axis. The patient support table...
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7605589 |
Method for automatic shimming for nuclear magnetic resonance spectroscopy
A method for homogenizing a static magnetic field with a magnetic field distribution B 0 (r) for nuclear magnetic resonance spectroscopy by adjusting the currents C i through the shim coils, thus...
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7592812 |
Magnetic resonance imaging apparatus and static magnetic field correction method
A magnetic resonance imaging apparatus includes: a static magnetic field generating unit which generates a static magnetic field, a measuring unit which measures the strength distribution...
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7579838 |
Systems, methods and apparatus for a partially elongated field of view in a magnetic resonance imaging system
Systems, methods and apparatus are provided through which a partially elongated field-of-view in a magnetic resonance imaging system is generated either by an asymmetric primary coil or a...
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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...
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7567158 |
Superconducting magnet arrangement with hysteresis free field coil
A magnet arrangement (M, M′, M″, M′″) for generating a magnetic field in the direction of a z-axis in a working volume (V) disposed on the z-axis about z=0, with a magnet coil system (A,...
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7567082 |
Magnetic resonance imaging apparatus
A magnetic resonance imaging apparatus includes a gantry with a gradient coil which applies a gradient magnetic field to a subject in a static magnetic field, a bed which slides a top board in a...
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7554327 |
Method for determination and evaluation of a shim parameter set for controlling a shim device in a magnetic resonance apparatus
In a method for determination and evaluation of a shim parameter set for controlling a shim device in a magnetic resonance (MR) apparatus, the shim device is set using a first shim parameter set, a...
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7548063 |
Detuning of an RF shielded MRI scan room
The present invention relates to a system and method magnetic resonance (MR) imaging. Furthermore the invention relates to the use of a material and to a computer program. In order to provide a...
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7548061 |
Method and magnetic resonance apparatus for setting a shim to homogenize a magnetic field in the apparatus
In a method for determination or adaptation of a shim for homogenization of a magnetic field of a magnetic resonance apparatus, which magnetic field is provided for the generation of magnetic...
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7543370 |
Method for production of a superconducting magnetic coil
In a method for production of a superconducting magnetic coil, winding of superconducting wires of the superconducting magnetic coil is implemented with at least one UV-curable plastic, and the...
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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...
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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...
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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...
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7535231 |
Method for adjustment of a shim device of a magnetic resonance apparatus
In a method for adjustment of a shim device of a magnetic resonance apparatus before an image acquisition in a body region that has a volume of interest, a field distribution is measured in a...
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7535229 |
NMR system and method having a permanent magnet providing a rotating magnetic field
Disclosed herein are systems and methods for generating a rotating magnetic field. The rotating magnetic field can be used to obtain rotating-field NMR spectra, such as magic angle spinning...
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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...
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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 (R 1 ) with a...
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7511502 |
Magnetic resonance imaging apparatus
A magnetic resonance imaging apparatus includes a static magnetic field magnet which generates a static magnetic field, a gradient coil unit which generates a gradient magnetic field for...
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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...
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7501822 |
Cooled NMR probe head with flexible cooled connecting conduit
A magnetic resonance (MR) probe head comprises a detecting device with at least one antenna system which is cryogenically cooled by a cooling device, and a cooled preamplifier in a preamplifier...
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7498814 |
Magnet assembly for magnetic resonance imaging system
A magnet assembly for a Magnetic Resonance Imaging (MRI) system includes a vacuum vessel including an inner cylinder, an outer cylinder and a pair of tapered flanges connecting the inner and outer...
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7498811 |
Apparatus and method for patient movement tracking
The present invention relates, in general, to the field of motion tracking, and in particular to join a target in an MRI application. In particular the invention teaches an apparatus and method to...
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7492158 |
Method for determining construction parameters of magnet structures designed to generate magnetic fields in predetermined volumes of space and method for correcting magnetic fields in predetermined volumes of space, particularly in MRI apparatus
A method for determining construction parameters of magnet structures designed to generate magnetic fields in predetermined volumes of space, comprising the steps of: a) defining a predetermined...
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7482807 |
Method of determining a spatial distribution of magnetic particles
The invention relates to a method of determining a spatial distribution of magnetic particles in an examination zone, in which method a first magnetic field is generated, which forms in the...
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7479860 |
Magnetic field generating assembly and method
A magnetic field generating assembly comprising a set (A 1 -A 3 ;B 1 -B 3 ;C 1 -C 3 ) of, typically substantially coaxial, coils substantially symmetrically arranged about a plane orthogonal to the...
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7477055 |
Apparatus and method for coupling coils in a superconducting magnet
A system and method for connecting superconducting magnet coils made up of coil segments to allow an integrated winding concept. The integrated winding concept can include serially connecting coil...
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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...
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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...
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7459908 |
Passive shimming for MR spectroscopy at high magnetic fields
A method of providing shim sheets for adjusting a magnetic field in a magnetic resonance device by passive shimming, comprises the steps of field mapping of a region of interest in the MR device...
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7453264 |
Nuclear Magnetic Resonance apparatus
A magnet for a Magnetic Resonance Imaging apparatus, said magnet having at last two, preferably three open sides, and delimiting the patient receiving area, said magnet being composed of three yoke...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 C 1 , which carries current in a first...
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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...
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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...
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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...
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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...
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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,...
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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...
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