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Class 324/307 - Using a nuclear resonance spectrometer system


Subclass of Class 324 - Electricity: measuring and testing
Definition: Subject matter in which a spectrometer is used to induce
No. of patents: 2170
Last issue date: 05/29/2012


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NumberTitleIssue Date
7595639System and method of angular elliptic centric view ordering for 3D MR acquisitions
A magnetic resonance imaging (MRI) apparatus includes an MRI system having a plurality of gradient coils positioned about a bore of a magnet. An RF transceiver system and an RF switch are controlled by a pulse module to transmit and receive RF signals to and from an...
09/29/2009
7592808System and method for reducing MR scan time using partial fourier acquisition and compressed sensing
A system and method for reducing the scan time of an MR imaging system using a data acquisition technique that combines partial Fourier acquisition and compressed sensing includes a computer programmed to acquire a partial MR data set in k-space along a phase encodi...
09/22/2009
7592807Maximum likelihood estimator in the presence of non-identically distributed noise for decomposition of chemical species in MRI
A method of separating signals from at least two species in a body using echo-coherent time magnetic resonance imaging is provided. A plurality of echo signals is acquired at acquisition times optimized based on the noise properties of images with different variance...
09/22/2009
7579834Magnetic resonance imaging apparatus and magnetic resonance imaging method
A magnetic resonance imaging apparatus includes a data acquisition unit and an image data generating unit. The data acquisition unit acquires data according to a sequence derived by adding a coherent control pulse on a Steady-State Free Precession pulse sequence for...
08/25/2009
7576537RF pulse applying method with an MRI apparatus which reduces vertical magnetization
The present invention aims to receive a signal of tissue long in T2 at a relatively high level and suppress artifacts. When a magnetic resonance frequency of a component intended for measurement is assumed to be Ω and the frequency corresponding to a repetition tim...
08/18/2009
7576535Multi-compartment separation in magnetic resonance using transient steady-state free precession imaging
Disclosed is a method of quantitatively separating tissue signals based on relaxation time differences. The method uses the transient signal decay in steady-state free precession (balanced SSFP) imaging to provide an alternative to standard CPMG methods of T2
08/18/2009
7576536MRI method and apparatus for adaptive channel reduction in parallel imaging
The subject invention pertains to method and apparatus for parallel imaging. The subject method can be utilized with imaging systems utilizing parallel imaging techniques. In a specific embodiment, the subject invention can be used in magnetic resonance imaging (MRI...
08/18/2009
7573267System and method for active MR tracking
A system and method for active MR tracking includes a magnetic resonance imaging (MRI) system having a plurality of gradient coils positioned about a bore of a magnet, an RF coil assembly positioned in the bore, and a pulse module. The MRI system also includes a pol...
08/11/2009
7573266Method and magnetic resonance system for adjustment of the field strength of RF pulses
In a method for adjustment of the field strength of radio-frequency pulses as well as a magnetic resonance measurement system, radio-frequency pulses are emitted by a radio-frequency antenna of a magnetic resonance measurement system in a magnetic resonance measurem...
08/11/2009
7570050Magnetic resonance imaging apparatus and method
A magnetic resonance imaging apparatus includes a movement unit which moves a subject placed in a static magnetic field, a collector which collects data corresponding to a magnetic resonance signal emitted from the subject, a detector which detects a position of a p...
08/04/2009
7570049Inter-subject coherence in DT-MRI
A method for estimating a value of a diffusion tensor includes obtaining, from a plurality of test subjects, DT-MRI data from which an initial estimate of the tensor can be derived. Values indicative of intra-subject variation and inter-subject variation in the data...
08/04/2009
7570051MR tomography with a system for contrast optimization of MRT images
An MR tomography apparatus has a system for contrast optimization of MRT images, with: an input unit for measurement parameters such as, for example, TR, TE, FOV, matrix size, flip angle, . . . etc. a unit for establishment of the anatomical area to be examined in t...
08/04/2009
7564242MR data acquisition method, MR image construction method, and MRI system
An MR data acquisition method for acquiring data D_φfat according to a steady-state pulse sequence specifying that a phase of an RF pulse is varied in order of 0, 1×φfat, 2×φfat, etc., wherein φfat=(2−TR/T_out+2×m)×π is established on an assumption that m...
07/21/2009
7560924Magnetic resonance imaging apparatus and magnetic resonance imaging method
A magnetic resonance imaging apparatus has a controller which controls an operation of a scan section in such a manner that the scan section executes a scan in an imaging sequence, based on the imaging sequence condition set so as to correspond to a slice tracking m...
07/14/2009
7560923Signal acquisition and processing method and apparatus for magnetic resonance imaging
A method and apparatus are disclosed for Magnetic Resonance Imaging using specialized signal acquisition and processing techniques for image reconstruction with a generally inhomogeneous static magnetic field. New signal processing methods for image reconstruction a...
07/14/2009
7557572Method of detecting and compensating for faults in an MRI process
According to a method of detecting and compensating for MRI scan errors, MRI scan data are received. At least one statistical boundaries is determined for the generated data. The data are observed in K-space. The observed K-space data are compared to the determined ...
07/07/2009
7550971Methods of in vitro analysis using time-domain NMR spectroscopy
An in vitro method of determining an analyte concentration of a sample includes placing the sample into a low-field, bench-top time-domain nuclear magnetic resonance (TD-NMR) spectrometer. The NMR spectrometer is tuned to measure a selected type of atom. A magnetic ...
06/23/2009
7550970Multidimensional NMR spectroscopy of a hyperpolarized sample
The present invention relates to methods of performing Nuclear Magnetic Resonance (NMR) spectroscopy adapted for a hyperpolarized sample. The methods comprise the steps of hyperpolarizing a sample using DNP, wherein at least a portion of the NMR active nuclei receiv...
06/23/2009
7541807Rotor drive apparatus and methods utilizing center-fed radial-outflow gas
A rotor drive apparatus includes a rotor and a stator. The stator has a gas injection orifice located on the axis about which the rotor spins. The gas injection orifice communicates with a bearing gap formed between a tapered surface of the rotor and an axially spac...
06/02/2009
7538548Fast spin echo MRI method compatible with CPMG violation
In preferred embodiments, a fast spin echo imaging technique is provided that is insensitive to violations of the Carr Purcell Meiboom Gill (CPMG) condition. Diffusion gradients disrupt the CPMG condition, and, hence, the present fast spin echo method is compatible ...
05/26/2009
7538549Magnetic resonance imaging apparatus, magnetic resonance imaging method and program therefor
A magnetic resonance imaging method includes the steps of performing a scan for collecting magnetic resonance signals from a subject in an imaging space where a magnetostatic field is formed, so as to match the PROPELLER method, wherein in executing the scan by the ...
05/26/2009
7535225Magnetic resonance apparatus having a superconducting basic field magnet with a structurally reinforced cryoshield
In an arrangement of a basic field magnet and a gradient coil of a magnetic resonance apparatus, the basic field magnet includes superconducting coils that are arranged in a reservoir with liquid helium for cooling. The helium reservoir is surrounded by a further re...
05/19/2009
7535222MRI data acquisition using propeller k-space data acquisition
Disclosed is a new propeller EPI pulse sequence with reduced sensitivity to field inhomogeneities is proposed. Image artifacts such as blurring due to Nyquist ghosting and susceptibility gradients are investigated and compared with those obtained in previous propell...
05/19/2009
7535223Method and apparatus for polarization transfer in the detection enhancement of MR spectroscopy
In a method and apparatus for detection and spectral editing in MR spectroscopy by polarization transfer in which the high spin population difference of two or more energy levels of a particular nuclear spin system is transferred to the energy levels of an other nuc...
05/19/2009
7535224Discrete magic angle turning system, apparatus, and process for in situ magnetic resonance spectroscopy and imaging
Described are a “Discrete Magic Angle Turning” (DMAT) system, devices, and processes that combine advantages of both magic angle turning (MAT) and magic angle hopping (MAH) suitable, e.g., for in situ magnetic resonance spectroscopy and/or imaging. In an exempla...
05/19/2009
7528601Three-dimensional slice-selective multi-slice excitation method in MRT imaging
In a method and apparatus for MRT imaging, data sets acquired from magnetic resonance signals of at least two limited spatial regions of a subject to be examined, (the spatial regions being displaced relative to one another along one spatial direction and overlappin...
05/05/2009
7518361NMR imaging method and device focusing magnetic flux to a focal point in the imaging volume region
The invention relates to an imaging NMR device and method in which an object is exposed to a stationary polarization field B0 and an electromagnetic alternating field. Nuclear resonant processes are induced in said object detected as test signals, and are...
04/14/2009
7518363Device for calibrating a magnetic resonance apparatus having a pet function
A device is disclosed for calibrating a magnetic resonance apparatus having a PET function. In at least one embodiment, the device includes at least one marker that is visible through magnetic resonance imaging and fixed with reference to the device; at least one ho...
04/14/2009
7518362Magnetic resonance apparatus utilizing time-varying rate of magnetic resonant frequency
The present invention provides a magnetic resonance imaging system capable of performing spectrum measurement even when a magnetic resonant frequency changes during MRS measurement. A time-varying rate of a water magnetic resonant frequency is measured in advance be...
04/14/2009
7514922Vacuum container for cooled magnetic resonance probe head
A magnetic resonance probe head (40) comprises a vacuum container (43) in which several RF resonator coils (31, 32; 51-54, 61-64) are disposed that can be cryogenically cooled and which are each designed as planar coils disposed pa...
04/07/2009
7511490Magnetic resonance imaging apparatus and magnetic resonance imaging method
Generation of an artifact in an image under a transition state up to a steady state is suppressed and image quality is improved by executing the following pulse sequence. In the coherent SSFP method, a gradient magnetic field is applied so that an integrated value o...
03/31/2009
7511491Imaging procedure and magnetic-resonance imaging system for the acquisition of the longitudinal spin-lattice relaxation time
An MR image imaging procedure for the acquisition of the longitudinal spin-lattice relaxation time has a data-acquisition module with a slice-selective α-high-frequency impulse as well as magnetic gradients (Gx, Gy, Gz) for slice se...
03/31/2009
7511489MRT imaging on the basis of conventional PPA reconstruction methods
In a method for magnetic resonance imaging on the basis of a partially-parallel acquisition (PPA) reconstruction method and a magnetic resonance tomography apparatus, data for at least two two-dimensional slices of a patient are acquired (which two-dimensional slice...
03/31/2009
7508204Method for supporting an MRI examination by means of positioning and checking MRI accessory implementation
The invention relates to a method for supporting an examination by means of an imaging diagnostic device. An examination mode is first selected by a user. At least one partial view of an examination object is subsequently generated and compared with a stored standar...
03/24/2009
7508205Magnetic resonance imaging system, a method of magnetic resonance imaging and a computer program
A magnetic resonance imaging system (1) includes a data acquisition system (11) with a main magnet (12) with an imaging volume. A gradient system (G) generates field gradients (Gx), (Gy) and (Gz). An RF excitation system (10) generates ra...
03/24/2009
7501820Magnetic resonance imaging using modified bessel functions
A method and apparatus to increase the effectiveness of a Magnetic Resonance Imaging (MRI) device by increasing the signal-to-noise ratio, allowing thinner slice thicknesses, and allowing more contiguous slices. In an MRI device, a patient is subjected to a constant...
03/10/2009
7498807Patient table
A patient table for use in equipment such as Magnetic Resonance Imaging (MRI) scanners that are susceptible to electrical or magnetic interference, is moved by hydraulic means, thus avoiding the need for electric motors that give rise to such interference. ...
03/03/2009
7498808RF pulse applying method and MRI apparatus
The present invention is directed to perform T2 weighting and suppression of a signal from a specific component in short preparation pulse application time. A first 90° pulse in DE pulses is a pulse which is selectively valid for water and makes the longitud...
03/03/2009
7495437Method for MRT imaging on the basis of conventional PPA reconstruction methods
In a method and apparatus for generating a magnetic resonance image of a contiguous region of a human body on the basis of partial parallel acquisition (PPA) by excitation of nuclear spins and measurement of radio-frequency signals indicating the excited spins, the ...
02/24/2009
7492152Method of reconstructing parallel magnetic resonance image using radial K-space trajectory, apparatus thereof, and computer readable recording medium recorded with program for executing the method
The present invention relates to a method of acquiring a parallel magnetic resonance image and a method thereof, and more particularly, to a method of acquiring a magnetic resonance image using a radial k-space trajectory, and an apparatus thereof. A method of recon...
02/17/2009
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