|
Match
|
Document |
Document Title |
|
|
7420370 |
Method and apparatus of echo planar imaging with real-time determination of phase correction coefficients
The present invention provides an apparatus and method of phase correction whereby changes in phase characteristics are measured during data acquisition and, accordingly, phase correction...
|
|
|
7420369 |
System and method for magnetic resonance imaging
In order to provide a magnetic resonance imaging system and method which allows an optimal timing of the imaging sequence at minimal procedure cost, a magnetic resonance imaging system and method...
|
|
|
7417430 |
Continuous moving-table MRI contrast manipulation and/or update of scanning parameters
A continuous table motion magnetic resonance imaging system includes a processor ( 70 ) for determining values of scan parameters including at least a subject velocity, a field of view length in...
|
|
|
7417428 |
Fibre tracking magnetic resonance imaging
A method of deriving a directional structure from an object dataset is proposed. The object dataset assigns local directions to positions in a multidimensional geometrical space. For example the...
|
|
|
7418287 |
Magnetic resonance imaging method with accelerated data acquisition
A method of dynamic magnetic resonance imaging comprising acquiring undersampled magnetic resonance signals for successive temporal time slots. In a space spanned by geometrical space and temporal...
|
|
|
7417435 |
Method for generating a homogeneous magnetization in a spatial examination volume of a magnetic resonance installation
In a method and magnetic resonance apparatus wherein a homogenous magnetization is generated in a spatial examination volume of the apparatus during examination of a subject, individual resonator...
|
|
|
7417429 |
Moving table MRI with subsampling in parallel
A novel magnetic resonance imaging method is described, for forming an image of an object from a plurality of signals sampled in a restricted homogeneity region of a main magnet field of a magnetic...
|
|
|
7412278 |
Method for simulation of an electric stimulation in an MR imaging system
A novel method is described for simulation of an electric stimulation of the nerve system subject to the rate of change of gradient fields. A gradient signal is filtered and a stimulation signal is...
|
|
|
7411398 |
MRI apparatus using periodic gradients which change in periodicity within each repetition, in one spatial direction
A magnetic resonance apparatus has a transmission and reception coil system and a gradient coil system that is designed to generate a gradient field that is periodic in one spatial direction. The...
|
|
|
7412275 |
Susceptometer for non-invasive iron level measurement in a body
A susceptometer for non-invasive determination of iron concentration in a body, by detecting the magnetic flux variation produced by the body. The susceptometer comprises a heat insulating case (...
|
|
|
7411395 |
Apparatus and method for NMR tomography acquisition with local magnetic field gradients in connection with local receiver coils
A magnetic resonance tomography apparatus, includes a gradient system that can generate at least one spatially varying and optionally time-varying magnetic field for at least one-dimensional local...
|
|
|
7411396 |
Method and system of magnetic resonance spectroscopy with volume element dissection
An MRI apparatus is presented that includes a computer programmed to sample a single volume element (voxel) for MR spectroscopy and automatically determine respective metabolite concentrations for...
|
|
|
7411393 |
Method and system for fiber tracking
One embodiment of the present invention includes a system comprising to determine a direction of tracking a fiber based on a vector corresponding to a largest value of a set of values for a tensor,...
|
|
|
7411394 |
Method for imaging diffusion anisotropy and diffusion gradient simultaneously
Inhomogeneous tissue structures cause spatial-varying water molecule diffusion that is characterized by the spatial derivative of diffusivity, i.e., diffusion gradient. In a magnetic resonance...
|
|
|
7408354 |
Phantom for evaluating magnetic resonance spectroscopy performance
A phantom for evaluating a magnetic resonance spectroscopy (MRS) performance is provided. Specifically, a phantom for evaluating an MRS performance capable of quantitatively evaluating a resolution...
|
|
|
7408346 |
Simultaneous phase cycling for nuclear magnetic resonance spectroscopy
The present invention discloses a method of simultaneously conducting more than one step of a radiofrequency phase cycle in a nuclear magnetic resonance (NMR) experiment. The method first involves...
|
|
|
7408345 |
Generalized MRI reconstruction with correction for multiple image distortion
Disclosed is an effective algorithm to correct motion-induced phase error using an iterative reconstruction. Using a conjugate-gradient (CG) algorithm, the phase error is treated as an image...
|
|
|
7408347 |
Highly constrained magnetic resonance spectroscopy image reconstruction method
A series of image frames are acquired in which an MR parameter such as echo time (TE) is changed and the resulting image frames are employed to produce an MRS image of a metabolite. Scan time is...
|
|
|
7405564 |
Sub-sampled moving table MRI for at least two adjacent fields of view
A magnetic resonance method is described for forming a dynamic image from a plurality of signals of an object moving relative to at least one RF′ receiving antenna. Imaging is acquired by at...
|
|
|
7405565 |
MRI apparatus and method for performing spatial selective saturation
The present invention provides an MRI apparatus with selective saturation without affection to the integral value of gradient magnetic field in 1TR. The MRI apparatus comprises a signal acquisition...
|
|
|
7403002 |
Method and apparatus for reduction of nyquist ghosts in medical magnetic resonance imaging
In a method and MRT apparatus for reduction of Nyquist ghosts in medical magnetic resonance imaging given the application of EPI sequences of one or more progression curves with regard to one or...
|
|
|
7402437 |
Method and device for analyzing the intracellular chemical state of living cells by nuclear magnetic resonance
The invention concerns a method for analysing the intracellular chemical state of living cells by nuclear magnetic resonance (NMR). Said method comprises a step which consists in preparing the cell...
|
|
|
7403007 |
Nuclear magnetic resonance probe with cooled sample coil
In a nuclear magnetic resonance probe, the sample coil is connected to the RF excitation source via transmission lines that are arranged to generate one or more nodal points at the 1 H excitation...
|
|
|
7403003 |
Assembly for generating magnetic fields in a magnetic resonance tomography apparatus that allows use of a superconducting gradient field device
An assembly for magnetic field generation in a magnetic resonance tomography apparatus has a device for generation of a basic magnetic field, a vacuum vessel surrounding the basic field device and...
|
|
|
7403005 |
Regularized variable density SENSE
A magnetic resonance imaging apparatus includes a plurality of radio frequency coils ( 34 ) that acquire variable density sensitivity encoded data that is undersampled at least away from the center...
|
|
|
7400146 |
Magnetic resonance imaging apparatus with reduced noise production
The invention relates to a magnetic resonance imaging (MRI apparatus comprising a main magnetic system for generating a main magnetic field in an examination volume which is enclosed by the main...
|
|
|
7400145 |
Systems, methods and apparatus for multi-slice quantitative imaging
Systems, methods and apparatus are provided through which multi-slice acquisitions of T1ρ-weighted data are combined to form quantitative T1ρ values without retrospective correction for the...
|
|
|
7397242 |
Parallel magnetic resonance imaging method using a radial acquisition trajectory
A fast and efficient method for reconstructing an image from undersampled, parallel MRI data sets acquired with non-Cartesian trajectories includes the calculation of unsampled k-space data from...
|
|
|
7397241 |
Method for determining the content of at least one component of a sample by means of a nuclear magnetic resonance pulse spectrometer
A method is described for determination of the content of at least one component of a sample by means of a nuclear magnetic resonance pulse spectrometer, with the magnetization of the sample being...
|
|
|
7395108 |
System for concurrent MRI imaging and magnetic field homogeneity measurement
A technique for acquiring magnetic field maps simultaneously with the images they affect allows improved correction of shimming and/or geometric distortions in the image and allows imaging...
|
|
|
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...
|
|
|
7394252 |
Regularized GRAPPA reconstruction
The invention relates to a method for reconstructing a fully sampled k-space data set. An undersampled GRAPPA scan of a subject is performed in a parallel MRI system using a set of receiver coil...
|
|
|
7394250 |
Mine detector with NQR-SQUID
A portable small mine detecting device for detecting a mine by transmitting a radio wave and detecting the NQR of nitrogen 14 atoms (14N) contained in the mine using a high-sensitivity,...
|
|
|
7394256 |
Wrist coil for magnetic resonance imaging
Two halves of a separable wrist coil provide a coil volume closely conforming to a patient's hand yet separable for insertion and removal of the hand. The halves are hinged allowing easy one-handed...
|
|
|
7391213 |
Three axis angle invariant RF coil assembly and method and system employing same
A radio frequency coil assembly for use in a magnetic resonance system comprises a set of conductors for detecting magnetic resonance signals in three orthogonal planes and capacitors for...
|
|
|
7388375 |
Method and apparatus for magnetic resonance spectroscopy
In the method disclosed here for magnetic resonance spectroscopy, the main magnetic field in the sample measurement region is generated in the form of a pulse, and the excitation and detection of...
|
|
|
7388376 |
Optimized method for prevention of foldover artifacts in magnetic resonance tomography
In an MRT method and apparatus with oversampling in at least one phase coding direction of a first region of interest to be visualized, an overview slice image is acquired across the entire subject...
|
|
|
7388377 |
Method for reducing the coupling between excitation and receive coils of a nuclear quadrupole resonance detection system
This invention relates to a method for improving the performance of a nuclear quadrupole resonance detection system by reducing the coupling between one or more excitation coils that provide a...
|
|
|
7385396 |
SAR reduction in MR imaging with parallel RF transmission
A computer readable storage medium in an example has a computer program stored thereon and represents a set of instructions that when executed by a computer during MR imaging causes the computer...
|
|
|
7385395 |
Apparatus for preparing a solution of a hyperpolarized noble gas for NMR and MRI analysis
The present invention relates generally to nuclear magnetic resonance (NMR) techniques for both spectroscopy and imaging. More particularly, the present invention relates to methods in which...
|
|
|
7382128 |
Magnetic resonance imaging system with a Class-E radio frequency amplifier
A Class-E amplifier has been adapted for use in the radio frequency section of a magnetic resonance imaging (MRI) system. A drive signal is produced by modulating the envelope of a radio frequency...
|
|
|
7382126 |
Method and apparatus for detection improvement of a weakly-sensitive atomic nucleus type in MR spectroscopy
In a method and apparatus for detection improvement of a weakly-sensitive atomic nucleus type in MR spectroscopy data acquisition using polarization transfer for a strongly-sensitive atomic nucleus...
|
|
|
7382129 |
4 dimensional magnetic resonance imaging
Provided are apparatus and methods for forming a multidimensional image of inanimate or animate objects which utilize a magnetization source ( 112 ) to magnetize a volume of an object to be imaged,...
|
|
|
7382127 |
System and method of accelerated MR propeller imaging
A system and method of MR imaging enables PROPELLER imaging to be feasibly carried out independently of slice orientation or anatomy of interest. The invention is directed to accelerated...
|
|
|
7382125 |
Tuned frequency portal for power transfer in MRI environment
A circuit for isolating line voltage from a patient in an MRI environment, uses a filter network tuned to line voltage and incorporating blocking capacitors to eliminate the need for bulky air core...
|
|
|
7378846 |
Magnetic resonance imaging method and apparatus for scanning a child
In one aspect the present invention is a method for imaging an infant or minor in a magnetic resonance imaging apparatus. The method preferably comprises positioning an adult in the...
|
|
|
7378844 |
Magnetic resonance system, receiver & method of generating detecting and digitizing analog MR signals solely within the MR shielded environment
A magnetic resonance (MR) system and method for generating information about an object is provided. The MR system comprises at least one MR detector configured to sense a plurality of signals...
|
|
|
7375526 |
Active-passive electromagnetic shielding to reduce MRI acoustic noise
The present invention provides an apparatus for reducing acoustic noise in a magnetic resonance imaging device including passive shielding located outside the actively shielded gradient winding...
|
|
|
7375522 |
Method for aligning multiple MR images acquired with alternating readout gradient
A water and fat image are acquired using a pulse sequence in which NMR signals for one image data set are acquired with a readout gradient of one polarity and NMR signals for the other image data...
|
|
|
7375521 |
Positional magnetic resonance imaging
A patient is examined by magnetic resonance imaging in different positions relative to gravity by moving the patient relative to the magnet, and the acquired data is compared to show differences in...
|