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. 18, 2017
Filed:
Jul. 01, 2013
Jörg Ulrich Fontius, Neunkirchen A. Brand, DE;
Holger Adolf, Zirndorf, DE;
Thomas Benner, Erlangen, DE;
Hans-peter Fautz, Forchheim, DE;
Matthias Gebhardt, Erlangen, DE;
Rene Gumbrecht, Herzogenaurach, DE;
Jörg Ulrich Fontius, Neunkirchen A. Brand, DE;
Holger Adolf, Zirndorf, DE;
Thomas Benner, Erlangen, DE;
Hans-Peter Fautz, Forchheim, DE;
Matthias Gebhardt, Erlangen, DE;
Rene Gumbrecht, Herzogenaurach, DE;
Siemens Aktiengesellschaft, München, DE;
Abstract
In order to provide online monitoring of local specific absorption rate (SAR) within a body subject to a magnetic resonance imaging (MRI) scan, directional couplers measure a phase and an amplitude of a transmission radio frequency (RF) pulse generated and transmitted by an MRI system. A measured local SAR value is calculated based on the measured phase and the measured amplitude of the transmission RF pulse using a voxel model of the body and an electromagnetic (EM) simulation. In order to verify proper operation of the local SAR monitoring, the measured local SAR value is compared to a predetermined local SAR value.