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:
Jan. 10, 1995
Filed:
Dec. 07, 1992
Hiromi Kawamoto, Yaita, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
The MR imaging apparatus comprises an RF shield for interposed between the set of gradient coil and the RF coil. The RF shield is a cylinder which longitudinal axis is substantially coincident to the z-axis in which a static magnetical field is applied. The RF shield comprises two conductive sheet-members which are half-cylinder respectively and integrated into one cylinder. The sheet members have a plurality of generally C-shaped conductive loop portions respectively which are defined by nonconductive lines parallel to RF current flow induced therein by the RF coil and a single radial cut line respectively. The RF shield comprises a connecting means for electrically connecting the C-shaped conductive loop portions so that the C-shaped conductive loop portion in one of the sheet members and corresponding C-shaped conductive loop portion in the other sheet member can be formed into one circuit respectively and a current can circulate in said circuit in the same direction around a y-axis orthogonal to the z-axis.