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:
Sep. 19, 2017
Filed:
Apr. 30, 2014
Magnetic resonance imaging apparatus and apparatus for measuring radio frequency output for the same
Toshiba Medical Systems Corporation, Otawara-Shi, Tochigi-Ken, JP;
Haruki Nakamura, Nasushiobara, JP;
Kazuyuki Soejima, Nasushiobara, JP;
Sojiyuuro Kato, Nasushiobara, JP;
TOSHIBA MEDICAL SYSTEMS CORPORATION, Otawara-Shi, Tochigi-Ken, JP;
Abstract
An apparatus for measuring radio frequency output for a magnetic resonance imaging apparatus includes a plurality of directional couplers, a comparator, a switcher and a converter. The plurality of directional couplers are different in degree of coupling from each other, and attenuate an RF signal which is generated in an RF signal generator and amplified in an RF power amplifier. The comparator compares input-level information of a signal inputted into the RF power amplifier with a threshold value. The switcher switches to any one of the plurality of the directional couplers based on a result of the comparison so as to output an RF signal by the one directional coupler. The converter performs a digital conversion of the RF signal from the one directional coupler so as to output a digital signal.