Nuclear magnetic resonance apparatus

Details Nuclear magnetic resonance apparatus Nuclear magnetic resonance apparatus

1981-05-19

1983-11-22

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3308

Patent

active

044172095

ABSTRACT:
In NMR imaging systems a pulsed field gradient may be applied across an excited slice (1) and the resonance signal detected during the field gradient pulse. It has been usual to demodulate the resonance signal at the Larmor frequency for a strip at the center of the slice, at which generally the field gradient has a zero-crossing. It has, however, been proposed to put the zero-crossing outside the slice, still demodulating at the slice Larmor frequency. In this invention demodulation is actually at the frequency for a probe (12) which is necessarily outside the patient. This makes the demodulation independent of errors in a local oscillator frequency. Demodulation may be for a probe effect to give a frequency for a strip outside the slice or the probe may be perpendicular to the gradient to give the zero-crossing frequency.

REFERENCES:
patent: 4070611 (1978-01-01), Ernst
patent: 4333053 (1982-06-01), Harrison

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1817193