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:
Aug. 17, 1993
Filed:
May. 22, 1992
Applicant:
Inventors:
Moriaki Takechi, Ako, JP;
Toshiki Idemaru, Ako, JP;
Assignee:
Mitsubishi Denki K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
324320 ; 324319 ;
Abstract
A magnetic field correction device for enhancing the homogeneity of a magnetic field generated by a magnet of a magnetic resonance imaging device. The correction device includes a plurality of magnetic shim holders disposed at predetermined circumferential angles on a support cylinder coaxial with the magnet. Each shim holder accommodates a magnetic shim element consisting of a first and a second magnetic bar member of distinct lengths and a first and a second non-magnetic tube for accommodating the first and second magnetic bar members therein. The members are positioned by respective stoppers inserted into the tubes.