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Class Information
Number: 324/313
Name: Electricity: measuring and testing > Particle precession resonance > Using a nuclear resonance spectrometer system > Including polarizing magnetic field/radio frequency tuning
Description: Subject matter wherein the degree of resolution at resonance is a result of adjustment between magnetic field strength and the frequency at which magnetic resonance occurs.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7573266 |
Method and magnetic resonance system for adjustment of the field strength of RF pulses |
Aug. 11, 2009 |
| 7495439 |
MRI method for reducing artifacts using RF pulse at offset frequency |
Feb. 24, 2009 |
| 7418287 |
Magnetic resonance imaging method with accelerated data acquisition |
Aug. 26, 2008 |
| 7372265 |
Compensation of magnetic field disturbances due to vibrations in an MRI system |
May. 13, 2008 |
| 7218111 |
Instrument to measure the polarization of a hyperpolarized substance |
May. 15, 2007 |
| 7176687 |
T1-weighted multiecho magnetic resonance imaging |
Feb. 13, 2007 |
| 7084630 |
Multi-modal RF coil for magnetic resonance imaging |
Aug. 1, 2006 |
| 7057390 |
Linear beam raster magnet driver based on H-bridge technique |
Jun. 6, 2006 |
| 6812699 |
Systems and methods for tuning an RF pulse by changing a pulse width of the RF pulse |
Nov. 2, 2004 |
| 6775568 |
Exchange-based NMR imaging and spectroscopy of hyperpolarized xenon-129 |
Aug. 10, 2004 |
| 6731113 |
Method of and device for the compensation of variations of the main magnetic field during magnetic resonance imaging |
May. 4, 2004 |
| 6707301 |
External magnetic field measuring method, static magnetic field correcting method, external magnetic field measuring apparatus, and MRI system |
Mar. 16, 2004 |
| 6694166 |
Magnetic resonance method |
Feb. 17, 2004 |
| 6591149 |
Method for prescribing a ramp by a clock-pulse-controlled quantity |
Jul. 8, 2003 |
| 6587706 |
Microcoil device with a forward field-of-view for large gain magnetic resonance imaging |
Jul. 1, 2003 |
| 6571183 |
Imaging using spatial frequency filtering and masking |
May. 27, 2003 |
| 6560475 |
Microcoil device for local wide field-of-view and large gain magnetic resonance imaging |
May. 6, 2003 |
| 6515478 |
Method for the correction of artifacts in magnetic resonance images |
Feb. 4, 2003 |
| 6498484 |
Method for reducing ringing in nuclear magnetic resonance well logging instruments |
Dec. 24, 2002 |
| 6489766 |
Phase insensitive preparation of single-shot rare for diffusion imaging |
Dec. 3, 2002 |
| 6487436 |
Switchable field of view apparatus and method for magnetic resonance imaging |
Nov. 26, 2002 |
| 6429657 |
Apparatus for improving image depth resolution in a magnetic field imaging apparatus |
Aug. 6, 2002 |
| 6356080 |
Device to measure the polarization of a hyperpolarized resonant substance |
Mar. 12, 2002 |
| 6323647 |
Motor driven tuning and matching of RF coils in an NMR probe |
Nov. 27, 2001 |
| 6291998 |
Basic field magnet for an MRI apparatus with a displaceable homogeneity volume |
Sep. 18, 2001 |
| 6144202 |
Reduction of MR image degradation due to added gradient field pulse |
Nov. 7, 2000 |
| 6111411 |
RF power calibration for an MRI system using multiple axis projections |
Aug. 29, 2000 |
| 6043657 |
Calibration of RF pulses for MRI |
Mar. 28, 2000 |
| 6027941 |
Method for distance measurements with solid-state NMR |
Feb. 22, 2000 |
| 5952734 |
Apparatus and method for magnetic systems |
Sep. 14, 1999 |
| 5929639 |
Non-dipolar RF coil for NMR lock and homonuclear decoupling |
Jul. 27, 1999 |
| 5926022 |
Method for flow compensating a multi-shot echo-planar MRI pulse sequence |
Jul. 20, 1999 |
| 5912558 |
Automatic frequency tuning for MR scanners |
Jun. 15, 1999 |
| 5548217 |
Microwave spectrometers |
Aug. 20, 1996 |
| 5416412 |
Nutation angle measurement during MRI prescan |
May. 16, 1995 |
| 5309102 |
Frequency calibration for MRI scanner |
May. 3, 1994 |
| 5278505 |
Self-cancelling RF receive coil used to decouple MRI transmit/receive RF coils |
Jan. 11, 1994 |
| 5274330 |
Actuating drive for a nuclear resonance spectrometer |
Dec. 28, 1993 |
| 5260654 |
Technique for amplitude alignment of NMR spectrometer using multiple pulse sequence that is independent of RF inhomogeneity |
Nov. 9, 1993 |
| 5214383 |
MRI apparatus with external magnetic field compensation |
May. 25, 1993 |
| 5179332 |
NMR radio frequency coil with disable circuit |
Jan. 12, 1993 |
| 5107215 |
RF power calibration for an NMR scanner |
Apr. 21, 1992 |
| 5068786 |
Method for controlling radio frequency excitation and gradient pulse characteristics in a magnetic resonance imaging system |
Nov. 26, 1991 |
| 4978919 |
Measurement and calibration of eddy currents for magnetic resonance imagers |
Dec. 18, 1990 |
| 4970457 |
MRI compensated for spurious rapid variations in static magnetic field during a single MRI sequence |
Nov. 13, 1990 |
| 4950993 |
Device and method for adjusting a radiofrequency antenna of a nuclear magnetic resonance apparatus |
Aug. 21, 1990 |
| 4920315 |
Head or body coil assembly for magnetic imaging apparatus |
Apr. 24, 1990 |
| 4885542 |
MRI compensated for spurious NMR frequency/phase shifts caused by spurious changes in magnetic fields during NMR data measurement processes |
Dec. 5, 1989 |
| 4845613 |
Radio frequency excitation and gradient pulse controller having plurality of channels for transmitting instruction and Rf pulse pattern data to a magnetic resonance imaging system |
Jul. 4, 1989 |
| 4843323 |
Device and method for adjusting a radiofrequency antenna of a nuclear magnetic resonance apparatus |
Jun. 27, 1989 |
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