CT projection metal trace complementing metal artifact correction method based on U-net

The invention belongs to the technical field of computer medical imaging, and discloses a CT projection metal trace complementing metal artifact correction method based on U-net, which comprises the steps of making a CT projection image sample data set based on CT projection image characteristics; optimizing a U-net network structure, designing a loss function for the optimized U-net network, wherein the loss function is composed of an L2 loss function, a projection image amplitude loss function and a difference loss function of projection sums of all angles; training an optimized U-net network based on the CT projection image sample data set and a loss function; and inputting the CT projection image sample data set into the trained optimized U-net network, and outputting an image after CTprojection metal trace completion. According to the invention, artifacts caused by metal can be effectively eliminated. 本发明属于计算机医学成像技术领域，公开一种基于U-net的CT投影金属迹线补全金属伪影校正方法，包括：基于CT投影图像特性，制作CT投影图像样本数据集；优化U-net网络结构，为优化的U-net网络设计损失函