Patents
Patents for G01R 33 - Arrangements or instruments for measuring magnetic variables (52,887)
06/1989
06/06/1989US4837516 Tuning device for nuclear magnetic resonance imaging apparatus and nuclear magnetic resonance imaging apparatus including the tuning device
06/06/1989US4837515 Radio frequency coil for nuclear magnetic resonance imaging
06/06/1989US4837513 MRI using asymmetric RF nutation pulses and asymmetric synthesis of complex conjugated SE data to reduce TE and T2 decay NMR spin echo responses
06/06/1989US4837512 Method and system for acquiring motional information of object in magnetic resonance
06/06/1989US4836209 NMR imaging of moving material using variable spatially selected excitation
06/01/1989WO1989004971A1 Solenoidal surface coils for magnetic resonance imaging
06/01/1989DE3839290A1 Method and apparatus of measuring the specific surface area on porous or pulverulent materials by measuring the spin-lattice relaxation time of protons of an impregnant
05/1989
05/31/1989EP0318293A2 Apparatus and method for processing tomographic data
05/31/1989EP0318257A2 Coil arrangements for magnetic resonance apparatus
05/31/1989EP0318212A2 Magnetic resonance imaging methods and apparatus
05/31/1989EP0318165A1 NMR spinner speed control
05/31/1989EP0317879A1 Device for detecting a magnetic medium
05/31/1989EP0317853A1 Magnet assembly for a nuclear spin tomography apparatus with superconducting main-field coils and normally conducting gradient coils
05/31/1989EP0317775A2 Balanced self-shielded gradient coils
05/31/1989EP0175789B1 Thermal barrier for variable temperature nmr
05/31/1989CN2038630U Magnetic field dictetor
05/30/1989US4835690 Integrated expert system for medical imaging scan, set-up, and scheduling
05/30/1989US4835510 Magnetoresistive element of ferromagnetic material and method of forming thereof
05/30/1989US4835506 Hollow substantially hemispherical permanent magnet high-field flux source
05/30/1989US4835504 Block for correcting magnetic-field homogeneity and a magnet fitted with blocks of this type
05/30/1989US4835485 Unconditionally-stable ultra low noise R.F. preamplifier
05/30/1989US4835472 Local coil for detecting nuclear magnetic resonance signals from an examination subject
05/30/1989US4835471 Measuring device with oscillation circuit including an exciting coil and tuned to a specific resonant frequency, for determining content of magnetizable substances in materials
05/30/1989US4835415 Circuit for amplifying and shaping an AC signal
05/30/1989CA1254943A1 Method of reducing artefacts in images formed by means of fourier zeugmatography
05/24/1989EP0317090A2 Localised coil arrangements for receiving signals from resonating nuclei
05/24/1989EP0316991A1 Method of and device for automatic phase correction of complex NMR spectra
05/24/1989EP0316901A2 Switch for high magnetic field
05/24/1989EP0316316A1 Medical examination table for nmr or tomodensitometry
05/24/1989EP0316312A1 radio-frequency energization method in an nmr experiment.
05/23/1989US4833434 Superconducting electromagnet for NMR imaging
05/23/1989US4833433 Magnet system for nuclear spin tomography having superconducting coils and a cold shield
05/23/1989US4833429 Quadrature combiner
05/23/1989US4833412 Double tuned circuit for distributed lumped capacitance observe coils
05/23/1989US4833411 Methods of imaging solids by NMR techniques
05/23/1989US4833410 System of coils for producing magnetic field gradients of very uniform polarization in an imaging or spectroscopy installation by NMR
05/23/1989US4833409 Apparatus for dynamically disabling an NMR field coil
05/23/1989US4833408 NMR chemical shift imaging method with influence of intensity distribution of static magnetic field removed
05/23/1989US4833407 Scan time reduction using conjugate symmetry and recalled echo
05/23/1989US4833406 Temperature compensated Hall-effect sensor apparatus
05/23/1989US4832037 Multi-region in-vivo magnetic resonance spectroscopy
05/23/1989CA1254618A1 Magnetic resonance imaging apparatus including a bird- cage r.f. coil
05/18/1989WO1989004494A1 Nmr imaging device, process for correcting non-uniformity and process for obtaining magnets used in said device
05/18/1989WO1989004478A1 Magnetic field homogenization in nmr spectroscopy
05/17/1989EP0316041A1 Method of and device for automatic phase correction of complex NMR spectra
05/17/1989EP0315631A1 Phantom of nmr machine and method for measuring the characteristics of a magnetic field using such a phantom.
05/17/1989CN1032987A Device for reading information from magnetic recording medium
05/16/1989US4831330 Probe for magnetic resonance imaging system
05/16/1989US4831329 Method and apparatus to correct for a phase error in central section magnetic resonance imaging data
05/16/1989US4830012 High speed NMR imaging method and apparatus
05/16/1989CA1254298A1 Method and apparatus for reading recorded data by a magnetoresistive head
05/11/1989DE3737133A1 Homogeneous field magnet with profiled pole plates
05/11/1989DE3736791A1 Interferometer having Josephson contacts made from monocrystalline oxidic superconductors
05/10/1989EP0315382A2 Enhanced decoupling of MRI RF coil pairs during tuning of MRI RF transmit coil
05/10/1989EP0315258A1 Device for reading information from a magnetic recording medium
05/10/1989EP0314790A1 Method of correcting image distortion for nmr imaging apparatus
05/10/1989CN1032867A Mageneto-sensitive type measuring instrument for intensive mageneto-leakage of ac field
05/09/1989US4829277 Ring comprising segments
05/09/1989US4829252 MRI system with open access to patient image volume
05/09/1989US4829251 Electromagnetic probe for measuring the thickness of thin coatings on magnetic substrates
05/09/1989US4829249 Method of inspecting magnetic disks for surface defects
05/09/1989US4827945 Magnetic resonance imaging
05/09/1989US4827931 Surgical catheters with suturing device and NMR opaque material
05/09/1989US4827761 Sample holder
05/09/1989CA1253917A1 Method and device for determining an nmr distribution in a region of a body
05/09/1989CA1253916A1 Nuclear magnetic resonance apparatus
05/09/1989CA1253799A1 Nmr contrast agents
05/05/1989WO1989004049A1 Magnet assembly
05/05/1989WO1989003693A1 Method of using fluorocarbons in nuclear magnetic resonance imaging
05/03/1989EP0314359A2 MRI RF coil holder for imaging temporomandibular joint
05/03/1989EP0314262A2 MRI system with open access to patient image volume
05/03/1989CN1032706A Induction type ammeter with measuring head
05/03/1989CN1004106B High precision magnetic determining device
05/02/1989US4827235 Magnetic field generator useful for a magnetic resonance imaging instrument
05/02/1989US4827219 Remotely adjustable MRI RF coil impedance matching circuit with mutualy coupled resonators
05/02/1989US4827218 Linear magnetoresistance-effect sensor with semiconductor and ferrimagnetic layers and its application in a magnetic-domain detector
05/02/1989US4827217 Low noise cryogenic apparatus for making magnetic measurements
05/02/1989US4827214 Method for measuring losses of a magnetic core
04/1989
04/27/1989DE3733836A1 Magnetic field probe for measuring the magnetic field strength by using the Hall effect
04/27/1989DE3732714A1 Biotelemetry receiver operating without a transmitter
04/26/1989EP0313450A1 Superconducting magnetometer device
04/26/1989EP0313435A1 Process and device for characterizing a sample of a crosslinked plastic material by its gel fraction during its continuous manufacture
04/26/1989EP0313213A2 Magnetic gradient coil set for nuclear magnetic resonance system having substantially different coil-patient spacings
04/26/1989EP0313132A2 Device for multichannel measuring of weak magnetic fields
04/26/1989EP0312896A2 Hydraulically actuated cryogenic leads
04/26/1989EP0312605A1 Detector for force, acceleration and magnetism using resistor element
04/26/1989EP0312596A1 Image diagnosing apparatus
04/26/1989EP0312586A1 Spurious resonance control for nmr observe coils.
04/26/1989EP0312570A1 Apparatus and method for making biomagnetic measurements
04/25/1989US4825166 Nonmagnetic alloy welded to magnetic permalloy; magnetic strip wrapped around bobbin
04/25/1989US4825164 Surface resonator for nuclear magnetic resonance equipment
04/25/1989US4825163 Quadrature probe for nuclear magnetic resonance
04/25/1989US4825162 Nuclear magnetic resonance (NMR) imaging with multiple surface coils
04/25/1989US4825161 Noise reduction in magnetic resonance images
04/25/1989US4825160 Method and device for MR tomography
04/25/1989US4825159 Method for operating a nuclear magnetic resonance tomography apparatus
04/25/1989US4825152 Transient field indicator
04/25/1989CA1253201A1 Magnetic structure for nmr applications and the like
04/20/1989WO1989003535A1 Magnetometer
04/20/1989DE3832973A1 Verfahren zum hervorheben von schwachen kontrasten in graphischen abbildungen Method for highlighting weak contrasts in graphical illustrations