发明申请
US20060220645A1 MAGNETIC FIELD MAPPING DURING SSFP USING PHASE-INCREMENTED OR FREQUENCY-SHIFTED MAGNITUDE IMAGES
失效
使用相位变化或频率变换的图像在SSFP期间的磁场映射
- 专利标题： MAGNETIC FIELD MAPPING DURING SSFP USING PHASE-INCREMENTED OR FREQUENCY-SHIFTED MAGNITUDE IMAGES
- 专利标题（中）： 使用相位变化或频率变换的图像在SSFP期间的磁场映射
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申请号： US11095520申请日： 2005-04-01
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公开(公告)号： US20060220645A1公开(公告)日： 2006-10-05
- 发明人: Weiguo Zhang
- 申请人： Weiguo Zhang
- 申请人地址： US CA Tustin
- 专利权人： Toshiba America MRI, Inc.
- 当前专利权人： Toshiba America MRI, Inc.
- 当前专利权人地址： US CA Tustin
- 主分类号： G01V3/00
- IPC分类号： G01V3/00
摘要：
A system has been developed for mapping the magnetic field during a balanced steady-state free precession (SSFP) sequence. Field maps are generated by analyzing the magnitude of images acquired using the SSFP imaging sequences with phase increment or frequency shift. The system maps the magnetic field relevant to the imaging sequence and need not rely on phase information. The field maps may be applied to adjust the hardware for correcting the field anomalies contained in the maps. The field maps may also be used for separation of water and fat signals in SSFP imaging.