【图像重建】基于先验和运动的重建 (PRIMOR)实现口腔CT图像重建附matlab代码和论文

1 简介

Low-dose protocols for respiratory gating in cardiothoracic small-animal imaging lead to

streak artifacts in the images reconstructed with a Feldkamp-Davis-Kress (FDK) method.

We propose a novel prior- and motion-based reconstruction (PRIMOR) method, which

improves prior-based reconstruction (PBR) by adding a penalty function that includes a

model of motion. The prior image is generated as the average of all the respiratory gates,

reconstructed with FDK. Motion between respiratory gates is estimated using a nonrigid

registration method based on hierarchical B-splines. We compare PRIMOR with an equiva

lent PBR method without motion estimation using as reference the reconstruction of high

dose data. From these