Methods for optimizing magnetic resonance imaging systems

Data processing: structural design – modeling – simulation – and em – Modeling by mathematical expression

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C600S422000

Reexamination Certificate

active

06947877

ABSTRACT:
A computer-implemented method for optimizing the design of an electromagnetic coil arrangement that generates a uniform magnetic field in a desired region, with the electromagnetic coil arrangement having a number of coils and a shape defined by r and z, where r is the radial coordinate of a cylindrical coordinate system having (r, z, φ) coordinates, and z is the axial coordinate of the cylindrical coordinate system. The method has an important use for designing superconductive or resistive coil arrangements for MRI systems. The core of the method is to compute a solution to a master equation (25) for a set of parameters lambda_j which define the coil arrangement and the currents needed. An important advantage is that the resultant coil arrangement has a minimum volume, which saves on material, or uses a minimum power.

REFERENCES:
patent: 5664568 (1997-09-01), Srinivasan et al.
patent: 5706813 (1998-01-01), Filler et al.
patent: 6255929 (2001-07-01), Xu et al.
Alton et al., G.D. A High-Temperature , “Volume-Type”, ECR Ion Source for RIB Generation, Proceedings of the 1999 Particle Accelerator Conference, IEEE, Mar.-Apr. 1999, pp. 1881-1883.
Christensen et al., T.C., Development of a Laced Electromagnetic Wiggler, IEEE Transactions on Magnetics, vol. 24, No. 2, Mar. 1988, pp. 1094-1097.
Chapman et al., B.L.W. Optimized Electromagnetic Coil Design Theory, IEEE, Southeastcon '92, Apr. 1992, pp. 757-762.
M. Kitamura, S. Kakukawa, K. Mori, and T. Tominaka, “An optimal design technique for coil configurations in iron-shielded MRI magnets”, IEEE Tran. Magn., vol. 30, No. 4, pp. 2352-2355, 1994.
H. Xu, S. M. Conolly, G. C. Scott, and A. Macovski, “Homogeneous magnet design using Linear programming”, IEEE Trans. Magn., vol. 36, No. 2, pp. 476-483, 2000.
J. H. Jensen, “Optimization method for permanent-magnet structures”, IEEE Trans. Magn., vol. 35, No. 6, pp. 4465-4472, 1999.
M. W. Garrett, “Thick cylindrical coil systems for strong magnetic fields with field or gradient homogeneities of the 6th to 20th order”, J. Appl. Phys., vol. 38, No. 6, pp. 2567-2591, 1967.
S. Crozier and D. M. Doddrell, “Compact MRI magnet design by stochastic optimization,” J. Magn. Reson., vol. 127, pp. 233-237, 1997.
R. V. Churchhill, J. W. Brown, and R. F. Verhey, Complex Variables and Applications, New York: McGraw-Hill, 1974 pp. 286-287.
S. Kakugawa et al., A Study on Optimal Coil Configurations in a Split-Type Superconducting MRI Magnet, (1999) IEEE vol. 9, No. 2, pp. 366-367.

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 for optimizing magnetic resonance imaging systems 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 for optimizing magnetic resonance imaging systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods for optimizing magnetic resonance imaging systems will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3427718

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