US Patent 7193494 Shim pieces for a magnetic resonance imaging magnet

Patent 7193494 was granted and assigned to Fonar Corporation on March, 2007 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Fonar Corporation

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

71934940

Patent Inventor Names

Raymond V. Damadian0

Date of Patent

March 20, 2007

Patent Application Number

110988040

Date Filed

April 5, 2005

Patent Primary Examiner

‌

Elvin Enad

Patent abstract

A method for producing a shim piece for a magnetic resonance imaging (MRI) magnet. The shim piece is used to form a shim of a magnet and is designed to suppress eddy currents in the shim created by the introduction of a gradient magnetic field. The shim piece is formed by a plurality of ferromagnetic rods placed side-by-side and surrounded by a dielectric material.