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:
Jul. 12, 2005
Filed:
Mar. 03, 2003
Matthias Drobnitzky, Spardorf, DE;
Matthias Drobnitzky, Spardorf, DE;
Siemens Aktiengesellschaft, Münich, DE;
Abstract
It is possible to suppress noise by intensively damping mechanical vibrations in MRT devices, especially gradient coils and magnet vessels, using compound materials containing centers of negative stiffness. The invention relates to a core spin tomography device, wherein the vibrations of the device components, which can in many aspects have a negative effect on the entire system, can be reduced or the noise transmission paths can be reduced. The core spin tomography device has a basic field magnet which is surrounded by a magnet envelope which surrounds and defines an inner area, a gradient coil system being disposed inside the inner area. Damping elements made of a material having a negative stiffness are arranged on an inner side of the magnet envelope defining the inner area in order to absorb acoustic vibrations which are produced during switching of the gradient coil system.