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:
Apr. 30, 1991
Filed:
Nov. 28, 1989
Horst Siebold, Erlangen, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A gradient coil system for a nuclear magnetic resonance tomography apparatus has main x and y coils, which are split arc saddle coils. The coil arcs are split so that their coupling increases with increasing distance from the plane of symmetry. The x and y main coils have respective x and y auxiliary coils allocated to them, which are also saddle coils and which have an aperture angle less than 90.degree., and which are arranged on the same cylindrical surface. The characteristics of the elementary saddle coils which define the gradient coil field are matched so that the noise terms of the series development of the gradient field are at least partially eliminated.