CREATION OF ELECTRON DENSITY DATASETS FROM SPECTRAL CT DATASETS

A method for converting spectral CT datasets into electron density datasets with applications in the fields of medical image formation or radiation treatment planning. The method comprises a preparation method that fits free parameters of a generalized electron density prediction model based on obtained electron density values such as data on tissue substitutes, and a conversion method using the fitted parameter prediction model and spectrally decomposed CT data as first and second inputs, respectively. The method is particularly useful in dual-energy CT and more specifically in dual layer detector CT systems. 一种关于医学图像形成或辐射处置规划的领域中的应用的用于将谱CT数据集转换为电子密度数据集的方法。所述方法包括基于获得的电子密度值(诸如组织代用品上的数据)拟合一般化电子密度预测模型的自由参数的准备方法，以及分别使用所述拟合参数预测模型和谱分解CT数据作为第一输入和第二输入的转换方法。所述方法在双能量CT中并且更具体而言在双层探测器CT系统中是特别有用的。