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6838878 |
Solid state NMR method with inverse detection
A solid-state nuclear magnetic resonance (NMR) method for investigating a sample material, which contains protons H and also spin-1/2 hetero nuclei X, uses a sample material rotated at the magic...
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6836115 |
Method for high resolution magnetic resonance analysis using magic angle technique
A method of performing a magnetic resonance analysis of a biological object that includes placing the object in a main magnetic field (that has a static field direction) and in a radio frequency...
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6836119 |
Method and apparatus for aligning a magnetic field modifying structure in a magnetic resonance imaging scanner
In a method for aligning a magnetic field-modifying structure ( 74 ) in a magnet bore ( 12 ) of a magnetic resonance imaging scanner ( 8 ), a reference magnetic field map of the magnet bore ( 12 )...
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6833702 |
System, method and methodology for reconfigurability of magnetic resonance imagers
A method and apparatus to improve the efficiency of an MRI apparatus by allowing the controller of the MRI to be remotely reconfigured, allowing modification and upgrade of the hardware...
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6828788 |
Apparatus and method for magnetic resonance imaging using partial parallel acquisition (PPA)
In a method for magnetic resonance imaging on the basis of a partial parallel acquisition (PPA) for projection reconstruction by exciting nuclear spins and measuring radiofrequency signals arising...
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6825663 |
Magnetic resonance apparatus and operating method therefor for actively regulating heating in the apparatus
In a method for the operation of a magnetic resonance apparatus having a gradient coil system as well as a shim system with a number of shim plates with respectively allocated heaters, at least one...
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6822446 |
MRI magnet vibration induced field instability simulator
A Magnetic Resonance Imaging (MRI) magnet field instability simulator ( 80 ) is provided. The simulator includes a rigid body motion generator ( 82 ) that simulates motion of one or more MRI system...
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6822445 |
Method and device for transmitting a magnetic resonance signal
A magnetic resonance signal is compressed, so that high signal values are over-proportionally reduced, and is then supplied to an analog-to-digital converter wherein it is digitized. After...
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6822447 |
Spherical magnetic resonance imaging apparatus
In a magnetic resonance imaging apparatus, a transmitting/receiving coil is attached to a patient at a region of interest and disposed within a static magnetic field, a radio-frequency magnetic...
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6819105 |
System and methods for enhancing quality of images affected by a motion of a subject
For the purpose of suppressing degradation in visibility of an image by a missing line due to the subject motion, the step of selectively exciting a linear region with intersecting 90° and 180°...
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6815952 |
Magnetic resonance diffusion imaging with eddy-current compensation
A method for eddy current compensated diffusion imaging using magnetic resonance is used to obtain a spin echo signal in a readout time window by excitation of a nuclear resonance signal using a...
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6812698 |
Imaging with spin excitation while keeping within a specific absorption ratio limit
In order to provide a spin excitation method and apparatus for performing imaging with good efficiency while keeping within an SAR limit, and a magnetic resonance imaging apparatus employing such a...
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6812700 |
Correction of local field inhomogeneity in magnetic resonance imaging apparatus
Perturbations in a static magnetic field of magnetic resonance imaging apparatus are compensated by creating magnetic fields near an object creating the perturbations with the magnetic fields...
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6812702 |
Magnetic resonance imaging apparatus
A magnetic resonance imaging apparatus configured using a single column for supporting magnet devices disposed above and below the apparatus, wherein peripheries of yokes covering the magnet...
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6809517 |
Magnetic resonance imaging of prostate brachytherapy seeds
Two magnetic resonance images are acquired of seeds used in brachytherapy of the prostate with different pulse sequences. Phase images and magnitude images are reconstructed and a phase difference...
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6806707 |
Method for the presentation of magnetic resonance image with a designation of distortion-containing regions
In a method for presenting a magnetic resonance image, at least one region of the magnetic resonance image containing distortions, such as due to inhomogeneities in a basic magnetic field and/or...
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6806714 |
Detector of near-infrared light
A detector of near-infrared light includes a light receiving device having a perovskite-type composite oxide expressed by a general formula of La 1-x Pr x CrO 3 (where 0<x<1) and...
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6806705 |
Diffusion tensor magnetic resonance imaging including local weighted interpolation
An imaging method ( 150, 190 ) for imaging a subject ( 16 ) including fibrous or anisotropic structures ( 102 ) includes acquiring a three-dimensional apparent diffusion tensor map ( 162 ) of a...
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6806712 |
Magnetic resonance imaging apparatus and method
A magnetic resonance imaging assembly for generating a substantially homogenous magnetic field within an imaging-field-zone to produce an image of a region (anatomy-of-interest ( 2 )) in a patient...
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6806709 |
Flow imaging using balanced phase contrast steady state free precession magnetic resonance imaging
A novel technique for velocity measurements (PC-SSFP) is disclosed that combines CINE Phase Contrast (PC) MRI and balanced Steady State Free Precession (SSFP) imaging. Flow encoding is performed...
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6806708 |
Multi-coil reconstruction of MRI signals using linear phase multiplied data with separate demodulators for each coil
Imaging time using PILS is reduced by using multiple coils with localized sensitivities with each coil having a separate demodulation channel thereby permitting parallel signal processing and image...
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6803762 |
Pulse train, nuclear magnetic resonance tomograph and imaging method
The invention relates to a pulse train, to a nuclear magnetic resonance scanner, which comprises means for generating this pulse train, and to an imaging method in which the pulse train according...
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6804546 |
Multiple contrast echo-planar imaging for contrast-enhanced imaging
A dose of a contrast agent ( 44 ) is administered to the patient ( 42 ). A magnetic resonance is excited by an RF pulse ( 200 ) in a region of interest of the patient ( 42 ). An echo-planar imaging...
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6801034 |
Method and apparatus of acquiring large FOV images without slab-boundary artifacts
A system and method are disclosed using incremental table motion and partial data acquisition for increased volume coverage to reconstruct MR images across a large FOV without significant...
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6801036 |
METHOD, MAGNETIC RESONANCE SYSTEM, AND COMPUTER PROGRAM FOR REGISTERING MAGNETIC RESONANCE SIGNALS OF A SUBJECT IN A RECONSTRUCTION REGION AND IN TWO INDEPENDENTLY SELECTABLE SUPPLEMENTAL REGIONS ADJOINING THE RECONSTRUCTION REGION IN THE PHASE-CODING DIRECTION
In a method and magnetic resonance system for registering magnetic resonance signals of a subject and reconstructing an image on the basis of the registered magnetic resonance signals, an operator...
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6801038 |
Machine for diagnostic and/or therapeutic treatment, particularly a nuclear magnetic resonance imaging machine
A machine for diagnostic and/or therapeutic treatment, particularly a Nuclear Magnetic Resonance Imaging machine, includes, in combination therewith, a table ( 2 ) for supporting the patient, with...
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6801800 |
MR imaging using ECG-prep scan
An ECG-prep scan is used to set an optimum time phase in both systole and diastole of the heart. At each of the different time phases, an imaging scan is started to acquire a plurality of sets of...
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6801037 |
Dynamic real-time magnetic resonance imaging sequence designer
A system and method for facilitating RF pulse sequence generation and modification and for real-time sequence input modification for use in conjunction with magnetic resonance imaging equipment. A...
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6801035 |
Method for generating images by means of magnetic resonance
In a method for image generation by means of magnetic resonance, employing a number of independent reception antennas having sensitivity profiles differing from one another, radio-frequency...
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6798199 |
Method for synchronizing magnetic resonance imaging data to body motion
Synchronizing MR images to the motion of a patient, e.g., to the beating of the heart, respiration of the lungs, or motion of a limb, by extracting timing information from the MR imaging data,...
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6798202 |
Planar radio frequency coil for open magnetic resonance imaging systems
A magnetic resonance imaging apparatus is provided. The magnetic resonance imaging apparatus includes a main magnet assembly for generating a main magnetic field in a main magnetic field direction...
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6798200 |
Batch-fabricated gradient and RF coils for submicrometer resolution magnetic resonance imaging and manipulation
A batch micro-fabricable array of dimensionally scaled-down Integrated Micro Coil Structure (IMCS) having a plurality of multi-layer gradient coils and a set of RF coils is disclosed for Magnetic...
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6794866 |
Slow diffusion and flow of molecules measured by pulsed field gradient NMR using longitudinal magnetization of non-proton isotopes
A pulsed field gradient NMR (=nuclear magnetic resonance) method using stimulated echoes for determining the translational isotropic or anisotropic diffusion coefficient of a molecule or...
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6794867 |
Isotropic imaging of vessels with fat suppression
Two images are acquired using a three-dimensional projection reconstruction, SSFP pulse sequence. Different RF phase cycling patterns are used to acquire each image and a fat suppressed water image...
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6794868 |
Method of shim optimization
A method of optimizing effects of a shim system on static magnetic field in an imaging system or liquid spectroscopy system, wherein for each cell of a probe disposed within the magnetic field, the...
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6794865 |
Monitoring the health of a fluid system
A method and system for detecting an anomaly in a fluid system, comprising exposing a sample of the fluid system to a first, non-oscillating magnetic field, simultaneously exposing the sample to a...
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6794872 |
Method for determining the position of a local antenna in an MR system
In a method for determining the position of at least one local antenna in an examination space of a magnetic resonance (MR) system, magnetic resonance signals emitted by a body arranged in the...
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6794869 |
Moving table MRI with frequency-encoding in the z-direction
A system and method are disclosed using continuous table motion while acquiring data to reconstruct MR images across a large FOV without significant slab-boundary artifacts that reduces acquisition...
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6791321 |
Birdcage coils for simultaneous acquisition of spatial harmonics
In a magnetic resonance imaging apparatus, a main magnet assembly ( 12 ) produces a uniform magnetic field through an imaging region ( 14 ). An imaging region is defined within a subject by...
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6791323 |
Method and apparatus for measuring and correcting motion effects using navigator echoes
A method and apparatus for detecting displacement of an object using navigator echoes is presented. For motion that is linear in 3D, a linear regression on k-space data is performed by fitting a...
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6791322 |
Method and apparatus for transmission and reception of an analog magnetic resonance signal
In a reception coil, a carrier signal is frequency-modulated around a carrier frequency with a modulation signal corresponding to an analog magnetic resonance signal. The frequency-modulated...
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6788057 |
Open architecture gradient coil set for magnetic resonance imaging apparatus
A MRI gradient coil set includes a uniplanar Z-gradient coil, a biplanar X-gradient coil, and a biplanar Y-gradient coil. The coil set provides an open Z-axis face.
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6788055 |
Modular timemasking sequence programming for imaging system
A technique is described for programming multiple axes or channels of a system, such as an MRI system. Modular component time masks are defined including information for activity on at least one...
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6784665 |
Multiple degree of freedom adjustable MRI radio frequency array coil system
A MRI array coil for imaging a patient having a head, and a torso, includes a base; a left handle extending from the base; a left head coil array attached to the left handle for proximity to the...
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6784664 |
Fast method for dynamic MR imaging
Generalized series-based image reconstruction as used in dynamic imaging for high-speed imaging with limited k-space coverage for each time frame. Further, in acquiring low resolution data for a...
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6781374 |
Systems and methods for simultaneous acquisition of spatial harmonics
A magnetic resonance imaging (MRI) method is described. The method includes simultaneously acquiring partial radial backprojection signals from a cylindrical array of m detectors surrounding an...
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6782286 |
MRI system and MR imaging method
Without injecting a contrast medium, blood pumped out from the heart can preferably be depicted in a non-invasive fashion, resulting in a greatly shortened scanning time for data acquisition. An...
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6782143 |
Method and apparatus for processing an image
In a first aspect, a method and an apparatus for processing an image classifies the image content of a portion of the image, and in response thereto, selects between linear interpolation (e.g.,...
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6777935 |
MR method for generating navigator pulses
The invention relates to an MR method in which a navigator pulse is generated to excite a nuclear magnetization in a spatially limited volume by at least one RF pulse and at least two gradient...
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6777934 |
Magnetic resonance imaging method and apparatus
An MRI apparatus is provided for obtaining an image of a wide area using a multiple-coil, where a plural number of small receiving coils are arranged such that adjacent coils overlap spatially. An...
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