The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 1993
Filed:
Jul. 15, 1991
Yoshiki Igarashi, Katsuta, JP;
Goh Miyajima, Katsuta, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A silencer for a plurality of magnetic field gradient coils in a magnetic resonance imaging apparatus, comprising a magnet for generating a stationary magnetic field, a bobbin which holds the plurality of inclined magnetic field gradient coils disposed within the magnet for generating in the stationary magnetic field gradients to impart positional information to a magnetic resonance signal, and a silencer provided between an internal space between the magnet and the bobbin and a space outside the magnet for reducing the diffusion of noise occurring due to an electric current flowing through the plurality of magnetic field gradient coils to the external space through the internal space.