Nuclear magnetic resonance imaging apparatus with reduced acoust

Details Nuclear magnetic resonance imaging apparatus with reduced acoust Nuclear magnetic resonance imaging apparatus with reduced acoust

1989-06-08

1990-09-04

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

335219, 324300, G01R 3320

Patent

active

049547810

ABSTRACT:
A nuclear magnetic resonance imaging apparatus capable of considerably reducing the disturbing acoustic noises originating from the vibration of the gradient coil. The apparatus includes a sandwich structure which is located between the body to be examined and the main magnet, comprising a viscoelastic layer sandwiched by a first and a second sandwiching members.

REFERENCES:
patent: 3973190 (1976-08-01), Ulyanov
patent: 3980947 (1976-09-01), Bielsten et al.
patent: 4719362 (1988-01-01), Nest et al.
patent: 4755944 (1988-07-01), Glass
Yan et al., "Governing Equations for Vibrating Constrained-Layer Damping Sandwich Plates and Beams", Journal of Applied Mechanics, Dec. 1972, pp. 1041-1046.

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