发明名称 |
PARALLEL MRI METHOD USING CALIBRATION SCAN, COIL SENSITIVITY MAPS AND NAVIGATORS FOR RIGID MOTION COMPENSATION |
摘要 |
<p>Magnetic resonance (MR) calibration data are acquired using a plurality of radio frequency receive coils, and both coil sensitivity maps and reference projection vectors are generated based on the MR calibration data. During imaging, extra navigator projection vectors are acquired, or part of the imaging data can be used as navigator projection vectors. Partially parallel imaging (PPI) can performed to enhance the navigation information. The navigator projection vectors and the reference projection vectors are sensitivity weighted using the coil sensitivity maps to generate navigator sensitivity weighted projection vectors (navigator SWPV) and reference sensitivity weighted projection vectors (reference SWPV) respectively, and these are compared to generate subject position information. The subject motions are compensated prospectively or retrospectively using the generated subject position information. The motion compensation may be prospective, performed by adjusting an imaging volume of the PPI based on the subject position information.</p> |
申请公布号 |
WO2012085796(A1) |
申请公布日期 |
2012.06.28 |
申请号 |
WO2011IB55738 |
申请日期 |
2011.12.16 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;HUANG, FENG;LIN, WEI |
发明人 |
HUANG, FENG;LIN, WEI |
分类号 |
G01R33/561;G01R33/563;G01R33/565;G01R33/567 |
主分类号 |
G01R33/561 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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