基于配准的PET/MR左右图像方位确定方法
Registration-based method for determining relative PET/MR left-right image orientation.
作者信息
Laymon C M, Ziolko S K, Becker C R, Price J C, Mountz J M
机构信息
Department of Radiology, University of Pittsburgh, 200 Lothrop Street, Pittsburgh, PA 15213, USA.
出版信息
Neuroimage. 2008 Mar 1;40(1):213-6. doi: 10.1016/j.neuroimage.2007.10.062. Epub 2007 Nov 21.
A quality control method is described for verifying that the coordinate systems of a PET and MR image from the same subject have the same relative left-right orientation. Such ambiguities can arise, for example, at the coordinating center receiving data from many institutions in large multisite studies. In this study, image registration was performed on the PET/MR image pair. The MR image was then reflected (left/right reversed) and the image registration was performed again. A comparison of the values of the cost function describing the accuracy of the registration was used to identify the correct relative orientation. In 122 studies using data with known orientations, 100% accuracy of the method was observed.
描述了一种质量控制方法，用于验证来自同一受试者的PET和MR图像的坐标系具有相同的相对左右方向。例如，在大型多中心研究中，协调中心从多个机构接收数据时可能会出现此类模糊性。在本研究中，对PET/MR图像对进行了图像配准。然后对MR图像进行翻转（左右颠倒），并再次进行图像配准。使用描述配准精度的代价函数值进行比较，以确定正确的相对方向。在122项使用已知方向数据的研究中，该方法的准确率达到了100%。
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