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公开(公告)号:US07903858B2
公开(公告)日:2011-03-08
申请号:US11926912
申请日:2007-10-29
申请人: Ti-chiun Chang , Jiayu Song , Tong Fang , Peter Speier , Edgar Müller
发明人: Ti-chiun Chang , Jiayu Song , Tong Fang , Peter Speier , Edgar Müller
CPC分类号: G01R33/56 , G01R33/4824 , G01R33/5608
摘要: A set of image-space data is reconstructed from a set of k-space data. The set of image-space data is generated by minimizing a cost functional by an iterative non-linear conjugate gradient process. The iterative process may be accelerated by introducing k-space weighting to the cost functional. With proper choice of k-space weighting, a block-Toeplitz matrix is generated which permits use of Fast Fourier Transform techniques. An image is rendered from the set of image-space data.
摘要翻译: 从一组k空间数据重建一组图像空间数据。 通过使迭代非线性共轭梯度过程的功能最小化来生成图像空间数据集合。 可以通过向成本函数引入k空间加权来加速迭代过程。 通过适当选择k空间加权,生成块Toeplitz矩阵,其允许使用快速傅里叶变换技术。 从图像空间数据集中呈现图像。
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公开(公告)号:US20080107319A1
公开(公告)日:2008-05-08
申请号:US11926912
申请日:2007-10-29
申请人: Ti-chiun Chang , Jiayu Song , Tong Fang , Peter Speier , Edgar Muller
发明人: Ti-chiun Chang , Jiayu Song , Tong Fang , Peter Speier , Edgar Muller
IPC分类号: G06K9/00
CPC分类号: G01R33/56 , G01R33/4824 , G01R33/5608
摘要: A set of image-space data is reconstructed from a set of k-space data. The set of image-space data is generated by minimizing a cost functional by an iterative non-linear conjugate gradient process. The iterative process may be accelerated by introducing k-space weighting to the cost functional. With proper choice of k-space weighting, a block-Toeplitz matrix is generated which permits use of Fast Fourier Transform techniques. An image is rendered from the set of image-space data.
摘要翻译: 从一组k空间数据重建一组图像空间数据。 通过使迭代非线性共轭梯度过程的功能最小化来生成图像空间数据集合。 可以通过向成本函数引入k空间加权来加速迭代过程。 通过适当选择k空间加权,生成块Toeplitz矩阵,其允许使用快速傅里叶变换技术。 从图像空间数据集中呈现图像。
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