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SPECTRAL CT IMAGE RECONSTRUCTING METHOD AND SPECTRAL CT IMAGING SYSTEM

机译:光谱CT图像重建方法及光谱CT成像系统

摘要

The present application relates to a spectral CT image reconstructing method and a spectral CT imaging system. The spectral CT image reconstructing method comprises: collecting incomplete original projection data in each of a plurality of energy windows; performing a projection data cross estimation using corresponding original projection data in at least one pair of energy windows constituted by different energy windows of the plurality of energy windows to obtain estimated projection data, wherein each pair of energy windows comprises a first energy window and a second energy window; combining the original projection data and the corresponding estimated projection data to obtain complete projection data; and reconstructing a spectral CT image using the complete projection data. The method of the present application can address the problem of inadequate projection data for reconstruction.
机译:本发明涉及光谱CT图像重建方法和光谱CT成像系统。光谱CT图像重建方法包括:在多个能量窗的每一个中收集不完整的原始投影数据;在由多个能量窗口的不同能量窗口构成的至少一对能量窗口中,使用对应的原始投影数据执行投影数据交叉估计,以获得估计的投影数据,其中,每对能量窗口包括第一能量窗口和第二能量窗口能量窗口结合原始投影数据和相应的估计投影数据,以获得完整的投影数据;并使用完整的投影数据重建光谱CT图像。本申请的方法可以解决用于重建的投影数据不足的问题。

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