发明名称 |
Methods for fat quantification with correction for noise bias |
摘要 |
Methods are disclosed for calculating a fat fraction corrected for noise bias of one or more voxels of interest using a magnetic resonance imaging (MRI) system. A plurality of image data sets are obtained each corresponding to NMR k-space data acquired using a pulse sequence with an individual associated echo time tn. A system of linear equations is formed relating image signal values to a desired decomposed calculated data vector having a component such as a water and fat combination having zero mean noise, or having a real fat component and a real water component. A fat fraction is calculated from at least one component of the decomposed calculated data vector. In another embodiment, the system of linear equations is normalized and can directly estimate a fat fraction or a water fraction having reduced noise bias.
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申请公布号 |
US8000769(B2) |
申请公布日期 |
2011.08.16 |
申请号 |
US20070923369 |
申请日期 |
2007.10.24 |
申请人 |
WISCONSIN ALUMNI RESEARCH FOUNDATION |
发明人 |
YU HUANZHOU;REEDER SCOTT BRIAN |
分类号 |
A61B5/055 |
主分类号 |
A61B5/055 |
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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