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Method for analytic reconstruction of cone-beam projection data for multi-source inverse geometry CT systems

机译:多源逆几何CT系统锥束投影数据的解析重建方法

摘要

A method for analytically reconstructing a multi-axial computed tomography (CT) dataset, acquired using one or more longitudinally-offset x-ray beams emitted from multiple x-ray sources is provided. The method comprises acquiring one or more CT axial projection datasets, wherein the CT axial projection datasets are acquired using less than a full scan of data. The method further comprises reconstructing the CT axial projection datasets to generate a reconstructed image volume. The reconstruction comprises back projecting one or more voxels comprising the multi-axial CT dataset, along one or more projection views, based upon a cone-angle weight determined for the voxels, wherein the cone-angle weight for the voxels is determined along a longitudinal direction.
机译:提供一种用于分析重建多轴计算机断层摄影(CT)数据集的方法,该方法使用从多个X射线源发出的一个或多个纵向偏移X射线束获取。该方法包括获取一个或多个CT轴向投影数据集,其中使用少于完整的数据扫描来获取CT轴向投影数据集。该方法还包括重建CT轴向投影数据集以生成重建的图像体积。重建包括基于针对体素确定的锥角权重,沿着一个或多个投影视图向后投影包括多轴CT数据集的一个或多个体素,其中,沿纵向确定体素的锥角权重方向。

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