Boesnach I, Friedburg H, Beth T
Institut für Algorithmen und Kognitive Systeme (IAKS), Universität Karlsruhe, Deutschland.
Biomed Tech (Berl). 2002;47 Suppl 1 Pt 2:619-21. doi: 10.1515/bmte.2002.47.s1b.619.
This article discusses the diagnostic benefit of methods for the compensation of motion artefacts in dynamic MRT-Mammography with a contrast agent. Our algorithms for motion compensation perform a locally rigid registration of cubic sub-volumes and a locally affine deformation of tetrahedral sub-volumes from a Delaunay-Triangulation. Within an extensive clinical study, these fast, automatic, and robust algorithms have been applied to 64 MRT-Mammography datasets from the radiological practice of Dr. Friedburg. The comparison of corrected datasets with original data and the statistical evaluation of results show a significantly improved quality of difference images, particularly at the presence of large motion artefacts.
本文讨论了在动态磁共振乳腺造影中使用造影剂时，运动伪影补偿方法的诊断益处。我们的运动补偿算法对立方子体积进行局部刚性配准，并对来自德劳内三角剖分的四面体子体积进行局部仿射变形。在一项广泛的临床研究中，这些快速、自动且稳健的算法已应用于弗里德堡医生放射实践中的64个磁共振乳腺造影数据集。将校正后的数据集与原始数据进行比较，并对结果进行统计评估，结果表明差异图像的质量有了显著提高，尤其是在存在大运动伪影的情况下。
