Matches 351 - 400 out of 2369 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
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7203534 Method of assisting orientation in a vascular system  
The invention relates to a method of forming a very accurate vascular map or road map to be associated with the current X-ray image during an invasive vascular intervention. The vascular map is...
7202665 Magnetic resonance spectroscopy of species with multiple peaks  
Metabolite images are produced with an MRI system using a priori information about the resonant peaks of the metabolites and their relative sizes to reduce the amount of NMR data needed for proper...
7199583 MR image production method and MRI apparatus  
A method to generate separate water and fat images includes applying a pulse sequence, which brings about no phase difference between a water signal and a fat signal, so as to acquire calibration...
7199582 Segmented acceleration sensitive cine MRI  
Conventional gradient echo sequences with relatively long echo-times visualise complex flow as signal loss, the degree and extent of which is a qualitative indicator of valvular heart disease....
7199581 Magnetic resonance measuring system determining the mass of samples in a production line with monitored drift compensation  
Magnetic resonance measurement methods for determining the mass of samples are provided in which magnetic field homogeneity is determined, compensation is provided for potential drifts in the...
7196518 Magnetic resonance method which automatically forms water/fat separated images with different echo times and determines that proper phase unwrapping has been utilized  
A magnetic resonance imaging method for fully automatically forming a water/fat separated image by calculation after acquiring data on images of different echo times, wherein the unwrapping of a...
7197353 Sensitivity encoding MRI acquisition method  
A sensitivity encoding method (SENSE) is used to acquire an MR image having a reduced field of view. The number of aliased replicates caused by surrounding object boundaries is calculated for each...
7196519 Stand-up vertical field MRI apparatus  
Apparatus and method for magnetic resonance imaging. In an aspect, the present invention is an apparatus for magnetic resonance imaging that includes a short bore magnet that is oriented such that,...
7193417 Bi-planar coil assemblies for producing specified magnetic fields  
Bi-planar coil assemblies are disclosed which have DSV's whose centers are offset by distances D from the origins of x,y,z-coordinate systems, where said origins of x,y,z-coordinate systems are...
7190166 Magnetic resonance imaging apparatus and magnetic resonance imaging method  
The present invention provides a magnetic resonance imaging apparatus and a magnetic resonance imaging method which improve the imaging efficiency. A preview scan initiator unit is provided for...
7190163 Method for producing multiple MR images with different contrast from a single image acquisition  
A training module is used to produce a database that stores histogram landmarks for MR images acquired with different scan parameters such as TR, TE flip angle and inversion recovery time. This...
7190992 Magnetic resonance imaging using technique of positioning multi-slabs to be imaged  
A magnetic resonance imaging system is provided for obtaining MR images by scanning a region of the object previously located on an object's positioning image. The system comprises a displaying...
7187791 Coil sensitivity map generating method, parallel imaging method, and MRI apparatus  
For a purpose of improving homogeneity of an image obtained in a self-calibration by a parallel imaging method generally referred to as SENSE (SENSitivity Encoding), sensitivity factors S n (p) are...
7187169 NMR and MRI apparatus and method  
Nuclear magnetic resonance (NMR) signals are detected in microtesla fields. Prepolarization in millitesla fields is followed by detection with an untuned dc superconducting quantum interference...
7187170 Multiple acquisition phase-sensitive SSFP for species separating in MRI  
MRI signals from two species such as fat and water are separated by repeatedly applying a steady state free precession (SSFP) sequence to an object with the phase of each RF excitation pulse in a...
7184813 Method and apparatus for improved metabolite signal separation in MR spectroscopy  
A technique is set forth for MR spectroscopy that is capable of reducing signal overlap between metabolite signals for improved clinical analysis of metabolite content. The technique includes...
7184814 Assessing the condition of a joint and assessing cartilage loss  
Methods are disclosed for assessing the condition of a cartilage in a joint and assessing cartilage loss, particularly in a human knee. The methods include converting an image such as an MRI to a...
7180290 Method for k-space data acquisition and MRI device  
A magnetic resonance imaging method acquires interleaved k-space data from a common 2D region in two or more k-spaces. The k-spaces have a first coordinate axis and a second coordinate axis. The...
7180289 Magnetic resonance imaging method  
A magnetic resonance imaging method for forming forms an image of an object from a plurality of signals acquired by an array of multiple receiver antennae, and in which spins are excited in a pail...
7180293 MRI apparatus  
For the purpose of providing an MRI apparatus which gives rise to no phase deviation due to frequency alteration of the RF magnetic field and signals for detection use, the MRI apparatus includes:...
7176683 Iterative decomposition of water and fat with echo asymmetry and least square estimation  
A method of separating signals from water and lipid in a body using spin-echo magnetic resonance imaging comprising steps of acquiring image signals at three acquisition times asymmetrically...
7176681 Inspection of composite components using magnetic resonance imaging  
Embodiments of the invention relate to a system and method for non-destructively inspecting a component that is at least partially made of a composite material. In one embodiment, the composite...
7176686 Parallel MR imaging method  
The invention relates to a parallel MR imaging method in which first a first MR imaging sequence is formed with a selectable minimum number of phase encoding steps and at least two separate MR...
7176687 T1-weighted multiecho magnetic resonance imaging  
In a method for magnetic resonance imaging of at least a portion of a body placed in a stationary and substantially homogeneous main magnetic field, the body is subjected to a sequence of RF and...
7176685 Imaging medical diagnosis apparatus and method for the operation of a magnetic resonance apparatus  
An imaging medical diagnosis apparatus has a display and operating device in which raw data of a region of an examination subject to be images can be stored, and an actuator with which a grouping...
7176684 Method and system of determining in-plane motion in propeller data  
The present invention is directed to a method of MR imaging whereby a k-space blade extending through a center of k-space from a subject in motion is acquired. A high-pass convolution of the...
7170290 Systems and methods for generating a magnetic resonance image based on a difference between a plurality of signals  
An MRI method comprising preparing at least two pulse sequence databases (PSDs) assumed to have the same echo time (TE) and different repetition times (TR), driving a magnet system of an MRI...
7170289 Magnetic resonance imaging method and apparatus  
In diffusion weighted imaging, motion monitoring navigation echoes are measured at every measurement of data after applying an RF excitation pulse, and one of them is set as a reference navigation...
7167740 Measuring method in magnetic resonance imaging device and magnetic resonance imaging device  
In a measuring space of the object ( 1 ), an essential measurement region ( 41, 61, 71, 81, 111, 131 ) having a center region of the measuring space and a plurality of peripheral measurement...
7167003 Measuring method of spatially resolved frequency selective images  
The present invention describes a magnetic resonance imaging method wherein spatially resolved frequency sensitive image data are collected by means of free precession sequences employing very...
7166999 Method and apparatus for serial array excitation for high field magnetic resonance imaging  
The subject invention pertains to methods and apparatus for producing excitation for magnetic resonance imaging (MRI) from a plurality of local exciting elements such that each local exciting...
7164268 Method and apparatus for spin-echo-train MR imaging using prescribed signal evolutions  
A magnetic resonance imaging “MRI” method and apparatus for lengthening the usable echo-train duration and reducing the power deposition for imaging is provided. The method explicitly considers...
7157911 RF shield and MRI system  
An eddy current induced in an RF shield by an X-axis gradient coil, a Y-axis gradient coil, and a Z-axis gradient coil respectively is homogeneously released to an earth ground simultaneously with...
7157910 Magnetic resonance imaging apparatus and method  
A magnetic resonance imaging apparatus includes an RF coil system with M RF coils ( 11–18 ) for detecting RF signals from a region of interest, M being an integer larger than 2, and N receiver...
7157909 Driven equilibrium and fast-spin echo scanning  
An NMR imaging process utilizes application of both a driven equilibrium technique and a fast-spin echo technique to acquire image. The fast-spin echo technique is a multiecho NMR imaging sequence,...
7155271 System and method for magnetic-resonance-guided electrophysiologic and ablation procedures  
A system and method for using magnetic resonance imaging to increase the accuracy of electrophysiologic procedures is disclosed. The system in its preferred embodiment provides an invasive combined...
7154268 Method and apparatus to improve an MRI image using regularization  
An MRI imaging system includes at least one processor and a plurality of coils to acquire a plurality of k-space samples of a target to image. The system includes a machine-readable media...
7154269 Iterative method for correction of geometric distortion resulting from phase evolution during segmented echo planar nuclear magnetic resonance imaging and apparatus therefor  
Segmented echo planar nuclear magnetic resonance imaging is performed using an iterative correction method that corrects or suppresses geometric distortion in the image domain caused by...
7151370 Quadratic species separation using balanced SSFP MRI  
MRI signals from two species such as water and fat are separated by using two SSFP acquisitions (S 1 , S 2 ) with the two species signals having two different phase differences (e.g., 180°, 90°)...
7148688 Magnetic resonance imaging apparatus and method of controlling magnetic resonance imaging apparatus  
A magnetic resonance imaging apparatus includes a storage unit configured to store positional information about positional relationships between a first ROI and a reference image, and a ROI setting...
7148687 Method for the acquisition of moving objects through nuclear magnetic resonance tomography  
A nuclear magnetic resonance (NMR) tomography method for investigating a target object, wherein radio frequency (RF) pulses are irradiated into a target volume and/or RF pulses from the target...
7148686 Systems and methods for generating a pulse sequence for mitigating a limitation on spatial selectivity  
A method and apparatus for mitigating limitations on spatial selectivity and frequency selectivity in space- and frequency-selectively generating magnetic resonance signals, when applying a first...
7145336 Opposed orthogonal fusion system and method for generating color segmented MRI voxel matrices  
The present invention provides a system and method for creating and manipulating one or more color-coded magnetic resonance images. The method includes acquiring a digitally-stored first gray tone...
7141970 Magnetic resonance imaging device  
An MRI apparatus having a calibration pulse sequence, wherein a group of pulse sequences for applying test gradient magnetic fields are established from a basic pulse sequence by a gradient echo...
7141971 Method and apparatus for enhanced multiple coil imaging  
The subject invention pertains to a method and apparatus for enhanced multiple coil imaging. The subject invention is advantageous for use in imaging devices, such as MRIs where multiple images can...
7141973 Magnetic resonance experiments by spatial encoding using the RF transmission coil  
In a method of spatial encoding in magnetic resonance experiments, encoding kernels are imposed into the magnetization signal during the excitation or re-focussing process using a transmit array...
7141972 Water-fat separation for fast spin echo imaging in an inhomogeneous field with progressive encoding  
A method to separate two chemically-shifted components of water (w) and fat (f) signals by: (i) estimating the field inhomogeneity β through a treatment of the residuals of the Moore-Penrose...
7138800 Method and apparatus for vibration-related artifact reduction  
A method and apparatus for reducing vibration-related artifacts in diffusion weighted imaging determines a vibrational frequency of an MR system and modifies scan parameters such that vibrational...
7132826 Characterization of receiver demodulation for correcting off-axis MR imaging degradation  
A calibration procedure is performed prior to an off-axis MR scan to measure the MRI system timing error in applying a frequency modulation waveform to the system receiver. Phase errors which...
7132828 Artifact reduction in SSFP MRI using super field view reconstruction  
Banding artifacts in steady state free precession (SSFP) magnetic resonance imaging (MRI) are reduced by acquiring and combining multiple SSFP images in an augmented matrix where an acquisition...
Matches 351 - 400 out of 2369 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >