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. 27, 2015
Filed:
Apr. 13, 2009
Ingmar Graesslin, Hamburg, DE;
Sven Biederer, Hamburg, DE;
Ulrich Katscher, Hamburg, DE;
Ferdinand Schweser, Hamburg, DE;
Peter Boernert, Hamburg, DE;
Paul Royston Harvey, Eindhoven, GB;
Wilhelmus Reinerius Maria Mens, Eindhoven, NL;
Ingmar Graesslin, Hamburg, DE;
Sven Biederer, Hamburg, DE;
Ulrich Katscher, Hamburg, DE;
Ferdinand Schweser, Hamburg, DE;
Peter Boernert, Hamburg, DE;
Paul Royston Harvey, Eindhoven, GB;
Wilhelmus Reinerius Maria Mens, Eindhoven, NL;
Koninkijke Philips N.V., Eindhoven, NL;
Abstract
In a method and apparatus to enable increased RF duty cycle in high field MR scans, a specific energy absorption rate (SAR) calculation processor calculates the local and global SAR or even a spatial SAR map. By incorporating additional information as, e.g. patient position, the SAR calculation accuracy can be increased as well as by using more patient specific pre-calculated information (e.g. based on different bio meshes), the so called Q-matrices. A sequence controller maybe provided to create a global SAR optimal RF pulse. After the optimal RF pulse is applied, the SAR and its spatial distribution are determined. SAR hotspots are also determined. Q-matrices within an appropriate radius around the hotspots are averaged and added to a global Q-matrix in a weighted fashion. After the global Q-matrix is updated, a new optimal RF pulse is created.