High-frequency system for nuclear spin tomography with shield fo

Details High-frequency system for nuclear spin tomography with shield fo High-frequency system for nuclear spin tomography with shield fo

1994-04-29

1995-04-25

Arana, Louis

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324322, G01V 300

Patent

active

054102510

ABSTRACT:
A high-frequency apparatus for nuclear spin tomography includes a high-frequency antenna arrangement in the region of a biological body to be imaged. Such an apparatus often exhibits an undesirable electric field coupling between the antenna arrangement and the body. To avoid the effects of such a coupling, the present invention provides at least one plate-shaped or layer-shaped shielding element consisting of a dielectric material with an .epsilon..sub.r of at least 50 and a tan .delta. of at most 2.5.times.10.sup.-2. This shielding element is arranged at least in a region of increased electric field strength prevailing on the antenna arrangement.

REFERENCES:
patent: 3277488 (1966-10-01), Hoffman
patent: 3495265 (1970-02-01), Smith
patent: 4636730 (1987-01-01), Bottomley
patent: 4839594 (1989-06-01), Misic et al.
patent: 4878022 (1989-10-01), Carlson
patent: 4978920 (1990-12-01), Mansfield et al.
patent: 5028872 (1991-07-01), Nakabayashi
patent: 5047787 (1991-09-01), Hogberg
ntz vol. 41 (1988), No. 5, pp. 280-283, Hans Dominik, Eberhard Eckert: Hochfrequenzabsorbierende Materialien.
ntz Archiv, vol. 11 (1989), No. 5, pp. 237-243, Wilhelm Durr et al.: Hochfrequenzsysteme fur die Kernspintomographie.
Hutte Des Ingenieurs Taschenbuch, vol. IV A (1957), pp. 802-803, by Akademischen Verein Hutte, E. V., Berlin, DE.
Lexikon Der Physik, by Hermann Franke, (1969) pp. 266-268, Franckh'sche Verlagshandlung, Stuttgart, DE.
DIN VDE 0335 (1988), Part 1, pp. 2-4, Part 3, pp. 2-6.

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