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Nonrigid registration of cardiac perfusion MR images using adaptive local template matching
Nonrigid registration of cardiac perfusion MR images using adaptive local template matching
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机译:使用自适应局部模板匹配对心脏灌注MR图像进行非刚性配准
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摘要
Motion of the heart during contrast enhancement is modeled at two hierarchical levels: global translation and local deformation. Large-scale, i.e., global, translational motion is identified using global template matching, while the local deformation of a portion of the object (e.g., the left ventricle where the object is a heart) is obtained using an adaptive local template matching scheme which adapts to the local edge distributions by varying the height and the width of the template as well as the location of the template followed by spatial regularization. To address the difficulty of rapid intensity changes across the image sequence as the contrast agent perfuse into the tissue, an edge-based similarity measure is used for template matching.
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