Method of setting conditions of high-frequency magnetic field

Details Method of setting conditions of high-frequency magnetic field Method of setting conditions of high-frequency magnetic field

1987-12-11

1989-01-17

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324313, G01R 3320

Patent

active

047990147

ABSTRACT:
In a method of setting the intensity of a high-frequency magnetic field, in order to adjust and set a field intensity of the high-frequency magnetic field in a magnetic resonance imaging system, an amplitude of an excitation high-frequency magnetic field pulse is sequentially changed; magnetic resonance excitation and reading of a magnetic resonance signal are repeatedly performed; and the amplitude of the high-frequency magnetic field pulse, which corresponds to a maximum or minimum value of the magnetic resonance signal of the signals obtained by a plurality of excitation cycles, is used as a reference to set the intensity of the high-frequency magnetic field. An opposite phase high-frequency magnetic field pulse, having the same amplitude as that of the excitation high-frequency magnetic field pulse, and having a carrier wave which is 180.degree. out of phase with respect to that of the excitation high-frequency magnetic field pulse, is applied to an object after reading of the magnetic resonance signal is completed and before the next magnetic resonance cycle is started.

REFERENCES:
patent: 4345207 (1982-08-01), Bertrand et al.
patent: 4443760 (1984-04-01), Edelstein et al.
patent: 4543529 (1985-09-01), Mee et al.
patent: 4675608 (1987-06-01), Hanawa et al.
patent: 4703267 (1987-10-01), Maudsley
patent: 4739267 (1988-04-01), Leroux et al.

Affiliated with

Also associated with

Rating

Method of setting conditions of high-frequency magnetic field 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 of setting conditions of high-frequency magnetic field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of setting conditions of high-frequency magnetic field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2414678