Rapid high-accuracy magnetic resonance imaging

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, G01V 300

Patent

active

060811188

ABSTRACT:
Method and apparatus for increased accuracy of an image of object density pixel values obtained by forming linear combinations thereof. A measured variable M is related to an integration of the actual object density .rho. over space q by a transform function F, i.e., M(t)=.intg.F(t, q).rho.(q)dq, and an estimated object density .rho.* is obtained by an approximate inversion of the transform function, i.e., .rho.*(q)=.SIGMA.E(t,q)M(t), where the sum is over the samples taken. (In the case of magnetic resonance imaging, M is the magnetization induced in a coil transverse to the main magnetization coil, the transform function F(t,q) includes sinusoidal components, and the inversion function G includes an inverse Fourier transform.) Therefore, the estimated object density .rho.* is related to the actual object density .rho. by

REFERENCES:
patent: Re33259 (1990-07-01), Crooks et al.
patent: Re35656 (1997-11-01), Feinberg et al.
patent: 4307343 (1981-12-01), Likes
patent: 4383219 (1983-05-01), Kaplan
patent: 4642567 (1987-02-01), Kaplan
patent: 5271654 (1993-12-01), Feinberg et al.
patent: 5422576 (1995-06-01), Kao et al.
Deconvolution of Images and Spectra (pp. iii-xiv, 1-41 and 76-113), Peter A. Jansson, Academic Press, San Diego, 1984.
Spatial Encoding and Image Reconstruction, Stephen J. Riederer, 1992 AAPM Summer School Proceedings, American Institute of Physics, 1992.
Processing Images in Frequency Space (pp. 331-341) & References (pp. 659-668), The Image Processing Handbook, 2nd Edition, John C. Russ, CRC Press, Boca Raton, 1995.
Echo-Planar Imaging (pp. 141-147), Franz Schmitt, Michael K. Stehling & Robert Turner, Springer-Verlag, Berlin 1998.
NMR--A perspective on imaging, General Electric, (pre. 1989).
NMR imaging in theory and in practice (Sections 2-5 & References, pp. 635-670), D.G. Taylor, R. Inamdar & M-C. Bushell, Phys. Med. Biol., vol. 33, No. 6, IOP Publishing Ltd. U.K., 1988.
Prolongation of Proton Spin Lattice Relaxation Times in Regionally Ischemic Tissue from Dog Hearts, E.S. Williams, J.I. Kaplan, F. Thatcher, G. Zimmerman & S.B. Knoebel, Journal of Nuclear Medicine, vol. 21, No. 5, pp. 449-453, 1980.
Parameters Determining the Appearance of NMR Images (pp. 81-82 and 99-103), F.W. Wehrli, J.R. MacFall & T.H. Newton, General Electric, 1984.
Image Restoration Models (Chapter 13, pp. 345-377), Digital Image Processing, William K. Pratt, John Wiley & Sons, New York, 1978.
Magnetic resonance imaging in cardiology: current status and perspectivess, Francesco Fedele, Paolo Di Renzi, Ernesto Di Cesare, Cardiologia (pp. 595-611), vol. 41 (7), 1996.

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

Rapid high-accuracy magnetic resonance imaging does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rapid high-accuracy magnetic resonance imaging, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rapid high-accuracy magnetic resonance imaging will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1787349

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