Patents
Patents for G01R 33 - Arrangements or instruments for measuring magnetic variables (52,887)
02/1991
02/12/1991CA1280153C Conical unimpregnated winding for mr magnets
02/11/1991CA2010679A1 Rf synthesizer for an nmr instrument
02/09/1991WO1991002263A1 Echo planar imaging using 180° pulses
02/07/1991WO1991001564A1 Superconducting homogeneous intense-field magnetic coil
02/07/1991WO1991001503A1 Nmr-pet scanner apparatus
02/06/1991EP0412071A2 Very low noise magnetoresistive sensor for high density media applications
02/06/1991EP0411971A2 Arrangment for measuring the temporal variations of the three components of the local magnetic field and orientation of the arrangment with respect to the local vertical
02/06/1991EP0411840A2 Radio frequency receiver for a NMR instrument
02/06/1991EP0411801A2 Communication system with active noise cancellation
02/06/1991EP0411792A2 Apparatus for testing hall effect device
02/06/1991EP0411710A1 2-Quantum selective MR sequence for selectively determining a nuclear magnetisation of a metabolite
02/06/1991CN2070914U Gate type megnetic force meter for testing magnetic flux
02/06/1991CN1011546B Method of reducing mr image interference in off-centre images and device for performing method
02/05/1991US4990879 Magnetic block with adjustable magnetization for producing a permanent magnetic field in a zone of interest
02/05/1991US4990878 Superconducting magnet device
02/05/1991US4990877 Passive shimming assembly for MR magnet
02/05/1991US4990850 Ferromagnetic
02/05/1991US4989608 Device construction and method facilitating magnetic resonance imaging of foreign objects in a body
02/05/1991US4989574 Electromagnetic pickup
02/05/1991CA1279819C Use of cross-linked hydrogel materials as image contrast agents in proton nuclear magnetic resonance tomography and tissue phantom kits containing such materials
02/04/1991CA2010677A1 Radio frequency receiver for a nmr instrument
01/1991
01/30/1991EP0410856A1 Turbine with nutating and precessing rotor
01/30/1991EP0410131A1 Near-field Lorentz force microscopy
01/30/1991EP0409920A1 Device for interfacing mri with other imaging modalities
01/30/1991EP0225390B1 Coil for nuclear magnetic resonance imaging diagnostic apparatus
01/30/1991EP0160697B1 Nmr imaging method and apparatus
01/29/1991US4988947 Amplitude and frequency/phase modulated pulses to achieve plane rotations of nuclear spin magnetization vectors with inhomogeneous B1
01/29/1991US4988850 Magnetoresistance element array
01/29/1991CA1279695C Electrical coils
01/24/1991DE3923456A1 Supraleitende homogene hochfeldmagnetspule Superconducting homogeneous high-field magnet coil
01/23/1991EP0409421A2 Magnetic resonance imaging methods and apparatus
01/23/1991EP0409310A2 Method and apparatus for edge detection in images
01/23/1991EP0409292A2 Improvements in and relating to magnetic resonance imaging
01/23/1991EP0140955B1 Baggage inspection apparatus and method for determining the presence of explosives
01/22/1991US4987390 Superconducting reversible variable inductor
01/22/1991US4987371 Method for in-vivo shimming
01/22/1991US4987370 Rf quadrature coil system for an MRI apparatus
01/22/1991US4987369 Method of and device for the volume-selective determination of an MR spectrum by means of selective polarization transfer pulse sequences
01/22/1991US4986272 NMR imaging with variable repetition
01/22/1991US4986256 Use of paramagnetic metalloporphyrins as contrast agents for tumors in MRI imaging
01/22/1991US4986078 Refrigerated MR magnet support system
01/22/1991US4986077 Cryostat with cryo-cooler
01/20/1991WO1991001500A1 Fibre optic arrangement for measuring the strength of an electric current
01/16/1991EP0408345A2 Methods of and apparatus for magnetic resonance imaging
01/16/1991EP0408303A2 A Pick-up coil assembly for multi-channel squid magnetometer
01/16/1991EP0408302A2 Multi-channel squid fluxmeter
01/16/1991EP0408134A2 Device and methodology for characterizing superconductive materials
01/16/1991EP0407879A2 Method for mutli-dimensional measurement of magnetic resonance in defined small volume regions of a solid-state sample
01/16/1991EP0407878A2 Process and apparatus for calibrating the intensity of a high frequency field intensity in the measure volume of an NMR tomograph
01/16/1991EP0407835A2 Atomic force microscope
01/16/1991EP0407579A1 Magnetic resonance imaging device
01/16/1991EP0407422A1 Process for measuring the effects of eddy currents
01/16/1991EP0407384A1 Magnet assembly.
01/16/1991EP0303609B1 Method for the temperature compensation of the measure taken by a magnetic sensor
01/15/1991US4985795 Method and apparatus using a stationary magnetic body for effecting signal transfers between a moving magnetic core and a magnetic storage medium
01/15/1991US4985680 RF coil system in magnetic resonance imaging apparatus
01/15/1991US4985679 Magnet assembly
01/15/1991US4985678 Horizontal field iron core magnetic resonance scanner
01/15/1991US4985677 Magnetic resonance imaging and spectroscopy using an excitation pulse for multiple-dimensional selectivity
01/15/1991US4985627 Spin-polarized scanning tunneling microscope
01/15/1991US4984875 Optical component and magnetic-field sensor using superposed single crystal elements having different optical properties
01/15/1991US4984574 Noninvasive fetal oxygen monitor using NMR
01/15/1991US4984573 Method of electron spin resonance enhanced magnetic resonance imaging
01/15/1991CA2020930A1 Device and methodology for characterizing superconductive materials
01/10/1991WO1991000530A1 Process for generating a pulse sequence
01/10/1991WO1991000529A1 Nuclear magnetic resonance imaging methods
01/10/1991WO1991000528A1 Probe head for whole-body nuclear-resonance tomography or local in vivo nuclear-resonance spectroscopy
01/10/1991WO1991000514A1 Nuclear magnetic resonance imaging methods
01/10/1991WO1991000059A1 Equipment for obtaining medical, pharmacological or other data by nuclear and echographic magnetic resonance
01/10/1991DE3921428A1 Magnetic field measurer for CRT deflection unit - uses Hall probes as measurement pick=ups offset w.r.t each other by 90 deg. and rotated to derive measurement valves
01/09/1991EP0407227A2 Magnetic field generating device for MRI
01/09/1991EP0407195A2 Gradient current speed-up circuit for NMR system
01/09/1991EP0406963A1 Method of reconstructing the spatial current distribution in biological matter and arrangement for the realisation of this method
01/09/1991EP0406583A1 System for manufacturing permanent magnets generating magnetic fields, and relevant elementary or composite permanent magnets
01/09/1991EP0046782B2 Methods of producing image information from objects
01/09/1991CN1048455A Output method of short circuit of hall devices and integrated hall circuits
01/08/1991US4984157 System and method for displaying oblique planar cross sections of a solid body using tri-linear interpolation to determine pixel position dataes
01/08/1991US4983945 Device for detecting magnetized areas
01/08/1991US4983942 Apparatus for locating passive shim guide rails in MR magnets
01/08/1991US4983922 Magnetic shim for magnetic field correction
01/08/1991US4983921 Rapid calibration of nutation angles in MRI
01/08/1991US4983920 NMR spectroscopy with phase encoding within a selected voxel
01/08/1991US4983918 Magnetic resonance imaging system
01/08/1991US4983917 Method for measuring flows in a nuclear magnetic resonance experiment
01/08/1991US4983912 Method for calibrating SQUID gradiometers of an arbitrary order
01/08/1991US4983004 Apparatus for three-dimensional viewing of magnetic resonance imaging tomograms
01/04/1991CA2020329A1 System for manufacturing permanent magnets generating magnetic fields and relevant elementary composite permanent magnets
01/03/1991DE3919052A1 Magnetic resonance tomography and localised spectroscopy - has gp. of impulse sequences, contrast chemicals and data analysis to improve resolution
01/02/1991EP0406082A1 Nuclear magnetic resonance three-dimensional imaging method
01/02/1991EP0406066A1 Method and device for measuring a magnetic field
01/02/1991EP0406060A1 Magnetoresistive effect transducer
01/02/1991EP0406024A2 Method and device for sensing a magnetic field with use of a magneto-resistive property of a superconductive material
01/02/1991EP0405521A2 Method and apparatus of nuclear magnetic resonance imaging with optimized gradient magnetic field power source
01/02/1991EP0233235B1 Centrally ordered phase encoding
01/02/1991CN2068690U High critical temperature supper-conductive thick mambrane flux converter
01/01/1991USH864 Magnetic field sensor and method of manufacture for a subassembly thereof
01/01/1991US4982328 Method and system for correcting magnetic resonance images for animation display
01/01/1991US4982254 Differentially magnetically sensitive diode structure
01/01/1991US4982162 Method for reconstructing MRI signals resulting from time-varying gradients
01/01/1991US4982161 Multimode magnetic resonance fast imaging method