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. 26, 2010
Filed:
Feb. 11, 2005
Sascha Kruger, Hamburg, DE;
Hans-aloys Wischmann, Henstedt-Ulzburg, DE;
Holger Timinger, Hamburg, DE;
Jorg Sabczynski, Norderstedt, DE;
Jorn Borgert, Hamburg, DE;
Sascha Kruger, Hamburg, DE;
Hans-Aloys Wischmann, Henstedt-Ulzburg, DE;
Holger Timinger, Hamburg, DE;
Jorg Sabczynski, Norderstedt, DE;
Jorn Borgert, Hamburg, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention relates to a device and a method for correction of the position (x) of a field sensor () measured by means of a magnetic localization device. External field distortions, such as caused for example by the rotating components () of a computer tomograph (), are then determined with the help of reference sensor () placed at a known position. It is possible to deduce, for example, the current angle of rotation (Φ) of the computer tomograph () from the measurement signals of the reference sensor (). Based on an empirically determined correction (δ(x, Φ)), the uncorrected determined positions (x) of the field sensor () can then be converted to corrected positions (x') in relation to the field distortions. The field generator () and the reference sensor () are preferably fastened to the gantry in order to eliminate the dependency of the field distortions on an inclination of the gantry.