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| Number | Title | Issue Date |
| 7710116 | Method for reducing the coupling during reception 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, during reception, the coupling between one or more excitation coils that provide a radio frequency magnetic field that excites quadrupole... | 05/04/2010 |
| 7656157 | Method for improving the precision of time domain low field H-NMR analysis A method for improving the precision of time domain low field H-NMR analysis, the method comprising rotating a sample within a RF coil and acquiring multiple time domain signals for the sample at multiple orientations within the RF coil. ... | 02/02/2010 |
| 7449886 | MR receiver assembly having readout cables capable of multiple channel transmissions An RF receiver apparatus for translating multiple channels of MR data across a single readout cable is disclosed. The RF receiver apparatus is designed to separately translate In-phase and Quadrature components of an MR signal to a data acquisition system for signal... | 11/11/2008 |
| 7429860 | Noise reduction for spectroscopic signal processing A windowed noise reduction technique is presented that allows a noise-reduced spectrum of satisfactory accuracy to be recovered from original noisy spectroscopic data, while acquiring a significantly reduced number of transient acquisitions. The signal-averaged, dec... | 09/30/2008 |
| 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 frequency and on the basic of a priori information the aliased differ... | 08/26/2008 |
| 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 radio frequency magnetic field that excites quadrupole nuclei, and one or... | 06/17/2008 |
| 7358734 | Single-sided NMR sensor with microscopic depth resolution A low-cost single-sided NMR sensor to produce depth profiles with microscopic spatial resolution is presented. The open geometry of the NMR sensor provides a non-invasive and non-destructive testing method to characterize the depth structure of objects of arbitrary ... | 04/15/2008 |
| 7355401 | Use of two or more sensors to detect different nuclear quadrupole resonance signals of a target compound The use of two or more sensors tuned to at least two different nuclear quadrupole resonance frequencies of a target compound to detect the different nuclear quadrupole resonance signals greatly reduces the chance of misidentification, and thereby improves nuclear qu... | 04/08/2008 |
| 7323871 | Method and system of MR imaging with simultaneous fat suppression and Tinversion recovery contrast A method and system for fat suppression with T1-weighted imaging includes a pulse sequence generally constructed to have a non-spectrally selective IR pulse that is played out immediately before a spectrally selective IR tip-up pulse. Thereafter, a fat su... | 01/29/2008 |
| 7323876 | Magnetic resonance imaging receive chain with dynamic gain and wireless receiver coil Methods and apparatuses are disclosed for dynamic adjustment of the receiver gain during magnetic resonance imaging (MRI) scan. To account for distortions introduced by the receiver that may be different at various receiver gains, a reference radio frequency (rf) si... | 01/29/2008 |
| 7292039 | Contrast enhancement in magnetic resonance imaging Systems and techniques for acquiring a medical image of a region of interest are described. A plurality of electromagnetic excitation pulses are applied to the region of interest according to predetermined parameters, and a predetermined delay period is introduced a... | 11/06/2007 |
| 7279899 | Contrast from rotating frame relaxation by adiabatic pulses This document discusses, among other things, a system and method for modulating transverse and longitudinal relaxation time contrast in a rotating frame based on a train of radio frequency pulses. ... | 10/09/2007 |
| 7279896 | Methods and apparatus for scanning a band of frequencies using an array of high temperature superconductor sensors The methods of the invention for scanning a band of frequencies using a nuclear quadrupole resonance detection system with an array of high temperature superconductor sensors to detect nuclear quadrupole resonance signals improve the nuclear quadrupole resonance det... | 10/09/2007 |
| 7279897 | Scanning a band of frequencies using an array of high temperature superconductor sensors tuned to different frequencies The methods of the invention for scanning a band of frequencies using a nuclear quadrupole resonance detection system with an array of high temperature superconductor sensors to detect nuclear quadrupole resonance signals improve the nuclear quadrupole resonance det... | 10/09/2007 |
| 7265549 | Scanning a band of frequencies using an array of high temperature superconductor sensors tuned to the same frequency The methods of the invention for scanning a band of frequencies using a nuclear quadrupole resonance detection system with an array of high temperature superconductor sensors to detect nuclear quadrupole resonance signals improve the nuclear quadrupole resonance det... | 09/04/2007 |
| 7239142 | Coil arrangement for magnetic resonance imaging apparatus A coil arrangement is provided that is configured to be used with a magnetic resonance imaging system. The arrangement can include a first coil element and a second coil element positioned adjacent to the first coil element. The second coil element may be different ... | 07/03/2007 |
| 7235848 | Nonvolatile memory with spacer trapping structure The present invention discloses a nonvolatile memory with spacer trapping structure, the nonvolatile memory comprising a semiconductor substrate. A gate oxide is formed on the semiconductor substrate. A gate structure is formed on the gate oxide. An isolation layer ... | 06/26/2007 |
| 7227361 | RF coil and magnetic resonance imaging apparatus A magnetic resonance imaging apparatus acquires magnetic resonance signals by the PI method using an RF coil unit having basic coils serving as surface coils which are arrayed with at least two coils along a static magnetic field direction (Z direction) and and at l... | 06/05/2007 |
| 7215122 | Phantom for production of controllable fMRI signal The subject invention relates to a method and apparatus for producing stimulated MRI data. In an embodiment, a remote-controlled “smart phantom” can produce simulated data. The simulated data can be acquired from a MRI system. The subject device can generate con... | 05/08/2007 |
| 7199577 | Characterizing multiple DC supplies decoupling capacitors in PCB by anti-resonant frequencies Methods and systems formulate the impedance for decoupling capacitors of a multiple power supply printed circuit board considering plane capacitance, series resonant frequencies, parallel resonant frequencies and impedance. The impedances are evaluated at anti-reson... | 04/03/2007 |
| 7193419 | Modular cascaded detuning circuit for antennas in MRI apparatuses A detuning circuit unit for antennas of a magnetic resonance apparatus has at least two identical detuning modules that are connected in a cascade circuit and can be simultaneously activated with a control signal of a control signal source, and a circuit component t... | 03/20/2007 |
| 7193832 | Magnetically coupled device and electronic equipment employing same If external magnetic field(s) (external noise) is/are present, equivalent noise component(s) might be produced at both receiving coil(s) and dummy coil(s), and respective noise components from receiving coil(s) and dummy coil(s) might be made to at least partially c... | 03/20/2007 |
| 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 the t1 and t2 relaxation times for the tissues of interest, and perm... | 01/16/2007 |
| 7123009 | Synchronization of wireless transmitted MRI signals in MRI system In a MRI system having a FID detector unit and a computer unit for processing FID signals, phase errors introduced into the FID signal at the detector unit are corrected at the computer unit by transmitting a pilot signal from the computer unit to the detector unit,... | 10/17/2006 |
| 7109713 | RF coil and magnetic resonance imaging apparatus A magnetic resonance imaging apparatus acquires magnetic resonance signals by the PI method using an RF coil unit having basic coils serving as surface coils which are arrayed with at least two coils along a static magnetic field direction (z direction) and at least... | 09/19/2006 |
| 7091721 | Phased array local coil for MRI imaging having non-overlapping regions of sensitivity A capacitor decoupling network allows the production of a multi-loop local coil for magnetic resonance imaging without overlap of the loops and/or with decoupling between both adjacent and non-adjacent coils. The former design may find application for new MRI techni... | 08/15/2006 |
| 7088100 | Method and apparatus to generate a circular polarized RF field independent of subject asymmetry An RF coil assembly is presented that incorporates balun networks to eliminate standing waves from cables used to apply a voltage to multiple drive ports of the coil. Each drive port is driven by an applied voltage that is shifted 90 degrees in the tangential direct... | 08/08/2006 |
| 7088104 | MRI tunable antenna and system A strip array antenna including a number of conductors (14) that are connected to ground or virtual ground though at least one reactive component (150). The apparent electrical length of conductors (140) is tuned so that it equals an integer mul... | 08/08/2006 |
| 7064545 | Method and apparatus of background suppression in MR imaging using spin locking The present invention is directed to a method and system of tissue or background suppression for the acquisition of image data from blood flow or tissue perfusion. Background suppression with minimal effects upon inflowing spins is achieved through a series of spin ... | 06/20/2006 |
| 7064544 | Method and system of scaling MR spectroscopic data acquired with phased-array coils The present invention is directed to a system and method of resealing spectroscopic data acquired with phased-array or surface coils to absolute “local” units and, hence, preserves the industry-desirable quantitative approach to single voxel MRS. An MRS signal i... | 06/20/2006 |
| 7012429 | Magnetic resonance imaging system using coils having distributed transmission line elements with outer and inner conductors An magnetic resonance imaging system having a housing comprising a transmit and/or receive inductor system having a coil about the housing axis in proximity with the housing. The transmit and/or receive coil includes a series of electrical transmission line elements... | 03/14/2006 |
| 7002348 | Cryogenically cooled phased array RF receiver coil for magnetic resonance imaging An RF coil construction for MRI is disclosed. The construction includes a device for cryogenically cooling receiver coils, at least two coil elements being cryogenically cooled by the device and forming an array. Each coil element includes at least two capacitors fo... | 02/21/2006 |
| 6998843 | RF coil and magnetic resonance imaging apparatus A magnetic resonance imaging apparatus acquires magnetic resonance signals by the PI method using an RF coil unit having basic coils serving as surface coils which are arrayed with at least two coils along a static magnetic field direction (z direction) and at least... | 02/14/2006 |
| 6995561 | Multiple channel, microstrip transceiver volume array for magnetic resonance imaging A multiple channel array coil for magnetic resonance imaging (MRI) is disclosed. In an exemplary embodiment, the array coil includes a plurality of conductive strips formed within a dielectric medium. The conductive strips are further arranged into a generally cylin... | 02/07/2006 |
| 6975118 | Supersensitive nuclear magnetic resonance micro imaging apparatus It is possible to grasp the behavior of a protein in a cell by realizing a nuclear magnetic resonance imaging method having spatial resolutions on the scale of a cell, and to provide an industrial measure for developing a high-quality protein utilizing this technolo... | 12/13/2005 |
| 6958606 | NMR excitation method A method of excitation for use during an NMR examination includes the subjecting of a body (92) to an orienting magnetic field (B0). The body (92) is adiabatically conditioned with a first series of Rf pulses (IP1–IPn). T... | 10/25/2005 |
| 6930481 | Three dimensional MRI RF coil unit capable of parallel imaging A magnetic resonance imaging apparatus acquires magnetic resonance signals by the PI method using an RF coil unit having basic coils serving as surface coils which are arrayed with at least two coils along a static magnetic field direction (z direction) and at least... | 08/16/2005 |
| 6914431 | MRI system with pulsed readout magnet A Magnetic Resonance Imaging (MRI) system 50 is provided including a superconducting magnet coil assembly 54. The magnet coil assembly 54 includes a superconducting magnet 82 and forms an imaging volume 60. The superconducting magn... | 07/05/2005 |
| 6771998 | Method for the operation of a magnetic resonance apparatus In a method for the operation of a magnetic resonance apparatus having a gradient system and a radio-frequency system that, among other things, are utilized for location coding of magnetic resonance signals, magnetic resonance signals from at least parts of a region... | 08/03/2004 |
| 6747452 | Decoupling circuit for magnetic resonance imaging local coils A decoupling circuit for decoupling an local coil during the application of an RF excitation signal in a magnetic resonance imaging system includes a passive switching circuit for switching an inductor in parallel with a capacitive circuit in the local coil, and a d... | 06/08/2004 |
