公开(公告)号：US20120148129A1

公开(公告)日：2012-06-14

申请号：US13280994

申请日：2011-10-25

Applicant: Ti-chiun Chang ,  Mariappan S. Nadar ,  Jens Gühring ,  Michael Zenge ,  Kai Tobias Block ,  Peter Speier ,  Edgar Mûller ,  Michael S. Hansen

Inventor： Ti-chiun Chang ,  Mariappan S. Nadar ,  Jens Gühring ,  Michael Zenge ,  Kai Tobias Block ,  Peter Speier ,  Edgar Mûller ,  Michael S. Hansen

IPC: G06K9/00

CPC classification number: G01R33/4824 ,  G01R33/5608 ,  G01R33/56545

Abstract: A reconstructed image is rendered from a set of MRI data by first estimating an image with an area which does not contain artifacts or has an artifact with a relative small magnitude. Corresponding data elements in the estimated image and a trial image are processed, for instance by multiplication, to generate an intermediate data set. The intermediate data set is transformed and minimized iteratively to generate a reconstructed image that is free or substantially free of artifacts. In one embodiment a Karhunen-Loeve Transform (KLT) is used. A sparsifying transformation may be applied to generate the reconstructed image. The sparsifying transformation may be also not be applied.

Abstract translation: 通过首先用不包含伪像的区域估计图像或具有相对小的幅度的伪像，从一组MRI数据呈现重建的图像。 例如通过乘法处理估计图像和试验图像中的相应数据元素以生成中间数据集。 中间数据集被迭代地变换和最小化以产生自由或基本上没有伪像的重建图像。 在一个实施例中，使用Karhunen-Loeve变换（KLT）。 可以应用稀疏变换来生成重建图像。 稀释变形也可能不适用。