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:
Dec. 24, 2013
Filed:
May. 22, 2009
Suguru Yokosawa, Kokubunji, JP;
Yo Taniguchi, Kokubunji, JP;
Yoshitaka Bito, Kokubunji, JP;
Hiroyuki Itagaki, Fuchu, JP;
Suguru Yokosawa, Kokubunji, JP;
Yo Taniguchi, Kokubunji, JP;
Yoshitaka Bito, Kokubunji, JP;
Hiroyuki Itagaki, Fuchu, JP;
Hitachi Medical Corporation, Tokyo, JP;
Abstract
A magnetic resonance imaging apparatus is provided, which is capable of reducing SAR while maintaining S/N ratio and image contrast in a GrE-type pulse sequence, regardless of whether a synchronous imaging is performed or not. The present invention controls a flip angle as to each measurement setthat is obtained by division according to the size of phase encoding and a body motion cycle of a subject in the GrE-type pulse sequence. In a setwhich measures echoes with phase encoding having a minimum absolute value, the flip angle is maximized as to the RF pulse having a minimum phase encoding amount and at least one RF pulse irradiated immediately before. As for the other RF pulses, the flip angle varies within a range less than the maximum, irrespective of the non-imaging mode, the imaging mode, or the size of phase encoding.