Process for the excitation of a sample for NMR tomography

Details Process for the excitation of a sample for NMR tomography Process for the excitation of a sample for NMR tomography

1985-04-16

1986-12-30

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324314, G01R 3320

Patent

active

046331786

ABSTRACT:
The use of longer 180.degree. pulse sequences for the generation of spin echos is made possible according to the invention during NMR tomography using the 2d-Fourier transformation process in that the phase position and, thus, the sense of rotation of the 180.degree. pulses is reversed after every two pulses. The mirror images which appear otherwise when using the known 180.degree. pulse sequences, e.g. the Carr-Purcell-Gill-Meiboom pulse sequence, are avoided by this measure.

REFERENCES:
patent: 4115730 (1978-09-01), Mansfield
patent: 4471305 (1984-09-01), Crooks et al.
patent: 4521733 (1985-06-01), Bottomley et al.
patent: 4536712 (1985-08-01), Iwaoka et al.
Accurate T2 NMR Images; Med. Phys., 10 (5), Sep./Oct. 1983, Nicholas J. Schneiders.
Experimental Pulse NMR; Eiichi Fukushima & Stephen B. W. Roeder; Addison-Wesley Publishing Co. Inc, 1981, pp. 25-35.

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