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:
Aug. 05, 2014
Filed:
Jul. 01, 2011
Applicant:
Masashi Ookawa, Otawara, JP;
Inventor:
Masashi Ookawa, Otawara, JP;
Assignees:
Kabushiki Kaisha Toshiba, Minato-Ku, Tokyo, JP;
Toshiba Medical Systems Corporation, Otawara-Shi, Tochigi-Ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The temperature of an MRI gradient magnetic field coil unit is measured at least two times. Shift data indicating a center magnetic resonance frequency of a hydrogen atom in response to variation of the gradient coil temperature is stored in advance. Estimated shift of the center frequency based on the measurement result is determined and the center frequency of an RF NMR excitation pulse is corrected based on the estimated shift.