An iterative reconstruction method for multiple objects with rigid motion model

When there are objects moving during CT acquisition process and each object has independently rigid motion which includes translation and rotation, the reconstruction will suffer from perceptible motion artifacts. To suppress such artifacts, one way is to implement motion estimation into reconstruction algorithms. In this paper, we give a new forward projection iterative method. With a priori knowledge of rigid motion models, our method compensates the motion effects and reconstructs the objects well.