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Class 324/301 - Using a magnetometer


Subclass of Class 324 - Electricity: measuring and testing
Definition: Subject matter utilizing means to measure the effects of
No. of patents: 95
Last issue date: 11/08/2011


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NumberTitleIssue Date
8054073Method and apparatus for implementing EIT magnetometry
A magnetometer is provided comprising an atomic vapor in an enclosure, a source of light for preparing the vapor into a state exhibiting electromagnetically induced transparency, a first laser beam passing through the atomic vapor, a phase detector for detecting cha...
11/08/2011
7723985Altered sweep bell-bloom magnetometer
A magnetometer is constructed wherein the sweeping is performed at one half the Larmor frequency and has as its center the absorption line. This allows the emitter to tune onto the absorption line twice per cycle as it passes through the line. This causes the increa...
05/25/2010
7705592Two dimensional T1/T2APP-T2APP processing of multi-gradient NMR data
A method for estimating a property of a material, the method including: acquiring data using nuclear magnetic resonance (NMR) measurements, the measurements performed by varying at least one of a magnetic field gradient (G) and an inter-echo time (TE); organizing th...
04/27/2010
7696751Method and apparatus for ferrous object and/or magnetic field detection for MRI safety
A method and apparatus for ferrous object and/or magnetic field detection are provided. Embodiments can improve magnetic resonance imaging (MRI) safety and increase the safety of MRI facilities. Embodiments can detect a given magnetic field strength around a MRI mac...
04/13/2010
7449883Method and apparatus for measuring change in magnetic induction of a magnetic material with respect to temperature
In order to measure the temperature parameters of magnetic materials, in a process and an apparatus for measuring the characteristics of variation of magnetic induction of magnetic material with respect to temperature, a probe is provided at any one point A within t...
11/11/2008
7385395Apparatus 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 hyperpolarized noble gases (e.g., Xe and He) are used to enhance and improv...
06/10/2008
7332910Frequency detection system comprising circuitry for adjusting the resonance frequency of a high temperature superconductor self-resonant coil
The use of a circuit to adjust the resonance frequency of a high temperature superconductor self-resonant transmit, receive, or transmit and receive coil results in improved performance. The circuit is useful in a frequency detection system, especially in a nuclear ...
02/19/2008
7327137Apparatus and method for non-symmetric magnetic field balancing in an inspection scanner
An inspection system positions a balancing shim to asymmetrically balance a magnetic field generated by an inductive sensor, which forms part of the inspection system. Additionally, relays and capacitors used to tune the inductive sensor to a desired resonance frequ...
02/05/2008
7295107Ferromagnetic detection pillar
A ferromagnetic detection pillar having one or more applied magnetic field sources and one or more magnetic field sensors, with the magnets and sensors arranged and adapted to detect a ferromagnetic threat object on one side of the pillar. A detection device, such a...
11/13/2007
7250763Probe coil for detecting NQR-responsive materials in large volumes
A coil assembly (11) comprising two coil sections (13a and 13b). Each of the sections (13) consists of a combinat of a spiral coil (15) having a variable coil pitch arranged in a saddle shape configuration. The saddle...
07/31/2007
7202667Anisotropic nanoparticle amplification of magnetic resonance signals
The reversible transverse susceptibility of magnetic nanoparticles is used to achieve magnetic flux amplification in magnetic resonance settings. Nanoparticles having substantially uniaxial or unidirectional magnetic anisotropy and a reversible transverse susceptibi...
04/10/2007
7202751Optically pumped frequency standard with reduces AC stark shift
An apparatus for generating a stabilized frequency signal is disclosed. The apparatus includes a quantum absorber having first, second, and third energy states. The quantum absorber is irradiated by a first radiation source that generates electromagnetic radiation h...
04/10/2007
7176681Inspection 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 component can be a ceramic matrix composite vane or a liner for a turbin...
02/13/2007
7145333High sensitivity atomic magnetometer and methods for using same
The present invention provides a high sensitivity atomic magnetometer and methods of measuring low intensity magnetic fields that relate to the use of an alkali metal vapor and a buffer gas; increasing the magnetic polarization of the alkali metal vapor thereby incr...
12/05/2006
7110493X-ray detector system having low Z material panel
A method and apparatus for detecting concealed items on or in an object by utilizing a low Z material panel. The object to be scanned is located between an x-ray detector and the low Z material panel. The method includes producing a pencil beam of x-rays from an x-r...
09/19/2006
7085656Method for suppressing edge artifacts in magnetic microscopy
A technique for eliminating edge artifacts in magnetic microscopy includes the steps of scanning a SQUID over an object under study to acquire values of magnetic fields produced by currents running in the object to create a first data set having N data points. At th...
08/01/2006
7064546Method for determining the Bfield strength in MR measurements
In magnetic resonance tomography apparatus and method for determining the field strength of high-frequency pulses which are emitted during a magnetic resonance measurement by the antenna, a magnetic resonance signal excited by a radio-frequency pulse or a radio-freq...
06/20/2006
7057387Method 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 be combined to form a single composite image. In one specific embodi...
06/06/2006
7049814Nuclear quadrupole resonance based inspection system using a highly resonant and compact magnetic structure
The present invention is directed toward a magnetic resonance based material detection system that includes a resonator probe which is highly resonant, is cost effective and has a compact magnetic structure with a low cost tuning mechanism and high quality factor (Q...
05/23/2006
7038450High sensitivity atomic magnetometer and methods for using same
The present invention provides a high sensitivity atomic magnetometer and methods of measuring low intensity magnetic fields that relate to the use of an alkali metal vapor and a buffer gas; increasing the magnetic polarization of the alkali metal vapor thereby incr...
05/02/2006
7034535Three-dimensional positioning of the patient couch at the center of the static or gradient magnetic field in MRI
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 field, and a gradient magnetic field and an image of the patient is obta...
04/25/2006
7009396Method and system for extended volume imaging using MRI with parallel reception
A method and apparatus for producing an image from an extended volume of interest within a subject using a Magnetic Resonance Imaging (MRI) system are provided. The method comprises translating the volume using a positioning device along an axis of the MRI system. A...
03/07/2006
6980847Apparatus for dynamic angular position tracking
A magnetic resonance imaging (“MRI”) system and method of correcting for the motion of a subject during an MRI scan. The motion of a subject in an MRI scan is corrected by acquiring nuclear magnetic resonance (“NMR”) spectra of an ordered material attached t...
12/27/2005
6942467UHV compatible lead through, device and procedure for highly effective production of nuclear spin polarized 3He at high polarization
There is provided an ultra high vacuum (UHV) compatible lead-through comprises (a) a housing, (b) a first space, within the housing, connected via a first port to a space outside the UHV-compatible lead through, (c) a second space, within the housing, connected via ...
09/13/2005
6924150Magnetic resonance imaging contrast system
A method for improving the magnetic resonance imaging contrast of a selected portion of a sample. A selected ferrimagnetic constituent is associated with the sample portion, by molecular or biological attachment or by some other means, so that the sample portion is ...
08/02/2005
6922460Explosives detection system using computed tomography (CT) and quadrupole resonance (QR) sensors
An explosives detection system which includes computed tomography (CT) and quadrupole resonance (QR) sensors for identifying particular explosive compounds present in passenger baggage. The CT sensor may be configured to automatically identify the presence or absenc...
07/26/2005
6888780Method and system for operating an atomic clock with simultaneous locking of field and frequency
The present invention provides a method and system to simultaneously use the microwave and Zeeman end resonances associated with the same sublevel of maximum (or minimum) azimuthal quantum number m to lock both the atomic clock frequency and the magnetic field to de...
05/03/2005
6587706Microcoil device with a forward field-of-view for large gain magnetic resonance imaging
Microcoils can be used in medical devices to enhance RF response signals and to create fields to enhance imaging capability in MRI imaging systems. An improved microcoil design includes a device to be inserted into a patient comprising a solid body having...
07/01/2003
6571183Imaging using spatial frequency filtering and masking
A method of, an and apparatus for, creating an image of currents flowing through current paths in a microelectronic circuit such that the image of the currents has improved spatial resolution using filters. The filters increase the spatial resolution and ...
05/27/2003
6560475Microcoil device for local wide field-of-view and large gain magnetic resonance imaging
Microcoil designs are provided that enable unique RF response Field profiles that are particularly useful in MRI imaging procedures, particularly where fields of view outside of the medical device are desirable. These devices are particulatly for use with...
05/06/2003
6549800Methods for in vivo magnetic resonance imaging
The systems and methods of the present invention provide for MRI probes adapted for insertion into a plurality of body orifices, in order to evaluate the anatomy of proximate anatomic structures, to diagnose abnormalities thereof and to treat the diagnose...
04/15/2003
6496005Magnetometer for detecting a magnetic field associated with nuclear magnetic spins or electron spins
A magnetometer for, among other things, measuring a magnetic field, associated with nuclear magnetic spins or electron spins received a specimen of a material that exhibits nuclear magnetic resonance or electron spin resonance at a resonant frequency γ.m...
12/17/2002
6493573Method and system for navigating a catheter probe in the presence of field-influencing objects
A system for and method of determining and compensating for the effect of a field influencing object on a field sensor, preferably a coil, that is within a navigational domain. The navigational domain contains navigational magnetic energy and disturbing m...
12/10/2002
6472869Diode laser-pumped magnetometer
A diode laser-pumped magnetometer includes a diode laser that emits a polarized pumping laser beam with resonant optical radiation; and a K-cell through which a magnetic field is manifested from an independent source, the K-cell containing atoms with a di...
10/29/2002
6396265Methods and apparatus for non-destructive control and forecasting concrete strength
A method of measuring a strength of a capillary-porous chemically active material while hardening, the capillary-porous chemically active material including therein a liquid which undergoes metamorphosis and which is present in the capillary-porous chemic...
05/28/2002
6381485Registration of human anatomy integrated for electromagnetic localization
A method for use during a procedure on a body. The method generates a display representing relative positions of two structure during the procedure. The method includes the steps of storing an image data set in memory, the image data set representing the ...
04/30/2002
6370414System and method for measuring, estimating and displaying RMS current density maps
A method of performing synthetic aperture magnetometery on the signals from a target organ using an array of biomagnetic sensors positioned in a predetermined manner around the target organ, each sensor in the array having a position vector and an orienta...
04/09/2002
6091241Device for examining a volume of small depth by nuclear magnetic resonance
A device for examining by nuclear magnetic resonance a volume having small depth, including means for creating a static homogeneous magnetic field B0 in which a volume to be examine is positioned, a system for creating magnetic field gradients ...
07/18/2000
6084409Magnetic resonance scanner having a unitary radio-frequency arrangement
Magnetic resonance scanner has a radio-frequency system with transmission/reception antennas, and possibly a radio-frequency shield as well, and guides for a movable patient bed arranged in a basic field system and in a gradient system, with the electrica...
07/04/2000
5952826Radical solution for nuclear magnetic resonance magnetometer
This invention relates to a radical solution for nuclear magnetic resonance magnetometry, having resistance to magnetic field gradients over a wide temperature range. This solution consists of a nitroxide radical with the formula: ##STR1## in wh...
09/14/1999
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