Method for correction of MRI motion artifacts and main field fluctuation
    1.
    发明授权
    Method for correction of MRI motion artifacts and main field fluctuation 有权
    纠正MRI运动伪像和主场波动的方法

    公开(公告)号:US06404196B1

    公开(公告)日:2002-06-11

    申请号:US09762026

    申请日:2001-04-04

    IPC分类号: G01V300

    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。