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公开(公告)号:US06404196B1
公开(公告)日:2002-06-11
申请号:US09762026
申请日:2001-04-04
申请人: Jeffrey L. Duerk , Michael Wendt , Ajit Shankaranaravanan , Yiu-Cho Chung , Jonathan S. Lewin , Elmar Merkle
发明人: Jeffrey L. Duerk , Michael Wendt , Ajit Shankaranaravanan , Yiu-Cho Chung , Jonathan S. Lewin , Elmar Merkle
IPC分类号: G01V300
CPC分类号: G01R33/56509 , A61B5/055 , A61B5/7257 , G01R33/482 , G01R33/56563 , G01R33/5676
摘要: A method for correcting MRI motion artifacts and main field fluctuations. A series of data prints are acquired at read points along a radial axis to form a view (210). Subsequent views define a NMR data set. A processor stores the NMR data set and reconstructs an image array from a stored NMR data set by; a) reconstructing the NMR data set along a radial axis; b) producing a correction data array including correction values where each of the correction values is calculated as a function of the corresponding stored NMR datum and the stored NMR datum for the intersection of the first and subsequent projection (200) axes; c) applying the data in the correction array to the NMR data set to produce a final NMrR data set.
摘要翻译: 用于校正MRI运动伪像和主场波动的方法。 在沿着径向轴的读取点处获取一系列数据打印以形成视图(210)。 随后的视图定义了一个NMR数据集。 处理器存储NMR数据集,并从存储的NMR数据集中重建图像阵列; a)沿着径向轴重建NMR数据集; b)产生校正数据阵列,该校正数据阵列包括校正值,其中每个校正值根据对应的存储的NMR数据和存储的第一和后一个投影(200)轴的交点的NMR数据计算; c)将校正阵列中的数据应用于NMR数据集以产生最终的NMrR数据集。