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:
Jun. 02, 2009
Filed:
Mar. 07, 2005
Cheng NI, Shenzhen, CN;
Ting Qiang Xue, Shenzhen, CN;
Jin Jun Chen, Shenzhen, CN;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
The present invention relates to a magnetic field adjusting device; such as may be used in MRI apparatus. The device can overcome the magnetic force to enable shimming plugs to move in a controlled continuous manner, thereby achieving continuous adjusting and accurate positioning. The magnetic field adjusting device comprises; a pair of opposing pole plates (), respectively mounted on magnetic field generating sources, forming a magnetic field space; a plurality of shimming plugs () movably mounted at the periphery of said pole plates (), each shimming plug () mounted in a radially oriented retaining groove (), so as to be movable in the direction of the retaining groove. Additionally, or alternatively, the circumferences of the magnetic field generating sources () are arranged with adjusting bars () which can move perpendicular to the pole plates. As an advantage of the present invention, the magnetic field can be shimmed conveniently quickly, and accurately to improve the imaging quality.