发明名称 |
BACKGROUND FIELD REMOVAL METHOD FOR MRI USING PROJECTION ONTO DIPOLE FIELDS |
摘要 |
For optimal image quality in susceptibility-weighted imaging and accurate quantification of susceptibility, it is necessary to isolate the local field generated by local magnetic sources (such as iron) from the background field that arises from imperfect shimming and variations in magnetic susceptibility of surrounding tissues (including air). We present a nonparametric background field removal method based on projection onto dipole fields in which the background field inside an ROI is decomposed into a field originating from dipoles outside the ROI using the projection theorem in Hilbert space. |
申请公布号 |
US2012141003(A1) |
申请公布日期 |
2012.06.07 |
申请号 |
US201113304141 |
申请日期 |
2011.11.23 |
申请人 |
WANG YI;DE ROCHEFORT LUDOVIC;LIU TIAN;KHALIDOV ILDAR;CORNELL UNIVERSITY |
发明人 |
WANG YI;DE ROCHEFORT LUDOVIC;LIU TIAN;KHALIDOV ILDAR |
分类号 |
G06K9/34 |
主分类号 |
G06K9/34 |
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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