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:
Nov. 18, 2014
Filed:
Jul. 21, 2011
Masaaki Umeda, Sakura, JP;
Mitsukazu Kamata, Nasushiobara, JP;
Masaaki Umeda, Sakura, JP;
Mitsukazu Kamata, Nasushiobara, JP;
Kabushiki Kaisha Toshiba, Minato-Ku, Tokyo, JP;
Toshiba Medical Systems Corporation, Otawara-Shi, Tochigi-Ken, JP;
Abstract
According to one embodiment, an MRI apparatus includes a signal acquisition unit, an image generating unit, a position acquiring unit, and a correction unit. The signal acquisition unit acquires a magnetic resonance signal produced from an object by applying a gradient magnetic field and an RF pulse in an imaging space where the object is placed. The image generating unit reconstructs image data on the object based on the magnetic resonance signal. The position acquiring unit acquires an imaging region as positional information in the imaging space. The correction unit brings a distribution of the gradient magnetic field close to a target distribution by transforming a waveform of the gradient magnetic field based on the positional information and a time constant of an eddy-current magnetic field to cancel the eddy-current magnetic field.