Invention Grant
- Patent Title: Magnetic resonance imaging apparatus and magnetic resonance imaging method
- Patent Title (中): 磁共振成像装置和磁共振成像方法
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Application No.: US13175120Application Date: 2011-07-01
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Publication No.: US08797032B2Publication Date: 2014-08-05
- Inventor: Masashi Ookawa
- Applicant: Masashi Ookawa
- Applicant Address: JP Minato-Ku, Tokyo JP Otawara-Shi, Tochigi-Ken
- Assignee: Kabushiki Kaisha Toshiba,Toshiba Medical Systems Corporation
- Current Assignee: Kabushiki Kaisha Toshiba,Toshiba Medical Systems Corporation
- Current Assignee Address: JP Minato-Ku, Tokyo JP Otawara-Shi, Tochigi-Ken
- Agency: Nixon & Vanderhye PC
- Priority: JP2010/152213 20100702; JP2011/131069 20110613
- Main IPC: G01V3/00
- IPC: G01V3/00
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.
Public/Granted literature
- US20120001635A1 MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD Public/Granted day:2012-01-05
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