Method for measuring nuclear magnetic resonance

Details Method for measuring nuclear magnetic resonance Method for measuring nuclear magnetic resonance

1987-09-18

1989-04-04

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3320

Patent

active

048189405

ABSTRACT:
For recording a nuclear magnetic resonance tomogram according to a Fourier-transform method, a Carr-Purcell-Gill-Meiboom pulse sequence is used for the excitation of a body to produce a sequence of spin-echo signals. A time-limited phase-encoding magnetic gradient field G.sub.X is imposed between each pair of 180.degree. pulses of the sequence. The phase-encoding magnetic gradient field is modified after every 180.degree. pulse so that every spin-echo signal corresponds to a different projection of the body. The magnetic gradient fields used in the recording are regulated in intensity and duration in such a way that a spin-phase condition at each 180.degree. pulse of the pulse sequence remains effectively constant. Thereby, it is possible to construct a complete tomographic recording with a single pulse-sequence excitation, so that the time required for such recordings can be reduced to a fraction of the time needed for recording nuclear-magnetic-resonance tomograms conventionally.

REFERENCES:
patent: 4521733 (1985-06-01), Bottomley
patent: 4532474 (1985-07-01), Edelstein
patent: 4595879 (1986-06-01), Lent et al.
patent: 4609872 (1986-09-01), O'Donnell
patent: 4612504 (1986-09-01), Pelc
patent: 4614195 (1986-09-01), Bottomley et al.
patent: 4665365 (1987-05-01), Glover et al.
patent: 4697148 (1987-09-01), Strobel et al.
Journal of Magnetic Resonance, 56, 179-182 (1984).
Proceedings of the IEEE, vol. 70, No. 10, Oct. 1982. pp. 1152-1173.
Electromedia 52 (1984), No. 2, pp. 56-65.

Affiliated with

Also associated with

Rating

Method for measuring nuclear magnetic resonance does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for measuring nuclear magnetic resonance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for measuring nuclear magnetic resonance will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-181986