Methods of achieving phase contrast in magnetic resonance imagin

Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

324309, G01U 300

Patent

active

061508144

ABSTRACT:
The invention relates to a method of obtaining phase information in magnetic resonance imaging (MRI) and employing this information to produce an enhanced image. In the past, magnetic resonance imagers have obtained data which contains phase as well as magnitude information. Often the phase information has been discarded in order to avoid image artifacts, which are usually attributable to motion. The present invention employs a technique in which this phase information is used in order to improve image quality, in an analogous method to that used in optical microscopy.

REFERENCES:
patent: 3999118 (1976-12-01), Hoult
patent: 4609872 (1986-09-01), O'Donnell
Dymond et al, "Application of the principle of optical phase-contrast microscopy to velocity phase-encodedMRI of blood flow in the aorta," The British Journal of Radiology, May 1996, pp. 410-414.
Shung K., Smith M., and Tsui B. "Principles of Medical Imaging" textbook Academic Press Inc. San Diego California pp. 231, 236, 241, 242 no month, 1992.
Spritzer, et al., "Rapid MR Imaginh of Blood Flow with a Phase-Sensitive, Limited-Flip-Angle, Gradient Recalled Pulse Sequence: Preliminary Experience", Radiology, vol. 1, No. 1, Jul. 1990, pp. 255-262.
Zernike, "Phase Contrast, a New Method for the Microscopic Observation to Transparent Objects", Physica IX, Jul. 1942, pp. 686-693.
Young, et al., "Chinical Magnetic Susceptibility Mapping of the Brain", Journal of Computer Assisted Tomography, 1987, pp. 2-6.
Ahn, et al, "A New Phase Correction Method in NMR Imaging Based on Autocorrelation and Histogram Analysis", IEEE Transactions on Medical Imaging, Mar. 1987, pp. 32-36.
Bernstein, et al., "Improved detectability in low signal-to-noise ration magnetic resonance images by means of a phase-corrected real reconstruction", Medical Physics, vol. 16, No. 5, Sep./Oct. 1989, pp. 813-817.
Moran, "A Flow Velocity Zeugmatographic Interlace for NMR Imaging in Humans", Magnetic Resonance Imaging, vol. 1, No. 4, 1982, pp. 197-203.
Edelstein, et al., "A signal-to-noise calibration procedure for NMR imaging systems", Medical Physics, vol. 1, No. 2, Mar./Apr. 1984, pp. 180-185.
Grover, et al., "NMR Spin-Echo Flow Measurements", Journal of Applied Physics, vol. 42, No. 1, Mar. 1, 1971, pp. 938-940.
Redpath, et al., "A new method of NMR flow imaging", Phys. Med. Biol., vol. 29, No. 7, Feb. 22, 1984, pp. 891-895.
Bernstein, et al., "Comparison of Phase-Difference and Complex-Difference Processing in Phase-Contrast MR Angiography", JMRI, vol. 1, No. 6, Dec. 1991, pp. 725-729.
Nayler, et al., "Blood Flow Imaging by Cine Magnetic Resonance", Computer Assisted Tomography, vol. 10, No. 5, Sep.-Oct. 1986, pp. 715-722.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Methods of achieving phase contrast in magnetic resonance imagin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods of achieving phase contrast in magnetic resonance imagin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods of achieving phase contrast in magnetic resonance imagin will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1260873

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.