Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1985-12-27
1987-09-15
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
G01R 3320
Patent
active
046942491
ABSTRACT:
For recording the nuclear magnetic resonance in selected areas of a body for the purpose of representing body cross-sections in the form of images (NMR tomography), wherein the nuclear spins of a selected type present in the area of one plane of the body are subjected to a superimposed gradient field varying in the selected cross-sectional plane, and selectively excited, the excitation of the nuclear spins is effected by application of a pulse sequence which induces the nuclear spins to supply at one stage a number of chronologically successive induction signals. The induction signals corresponding to each other in chronolical sequence are then processed to obtain separate sets of image signals so that by one single measurement a sequence of cross-sectional images is obtained which differ from each other by the intensity of the excited nuclear spins which varies according to the relaxation times T.sub.1 or T.sub.2. The fact that all images have been obtained by one and the same measurement provides the possibility to determine the relaxation times T.sub.1 and/or T.sub.2 related to the individual image points and to use them on the one hand for purposes of selective image representation and, on the other hand, for improving the image quality.
REFERENCES:
patent: 4115730 (1978-09-01), Mansfield
patent: 4297637 (1981-10-01), Crooks et al.
patent: 4318043 (1982-03-01), Crooks et al.
patent: 4471305 (1984-09-01), Crooks et al.
patent: 4486708 (1984-12-01), Macovski
J. M. S. Hutchison et al., J. Phys. E: Sci. Instrum. vol. 13, pp. 947-955 (1980).
W. A. Edelstein et al., Physics in Medicine and Biology, vol. 25, pp. 751-756 (1980).
G. Johnson et al., J. Phys. E. Sci. Instrum. vol. 15, pp. 74-79 (1982).
Brunner Peter
Knuttel Bertold
Post Hans
Ratzel Dieter
Bruker Medizintechnik G.m.b.H.
Tokar Michael J.
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