Projection fused image reconstruction algorithm study based on graded variable voltage

To solve the problem of the incomplete projection data reconstruction in variable voltage, linear fused CT reconstruction algorithm based on variable voltage has advanced. The algorithm firstly extract the projective sequences according to the optimal gray belt, then the projection data under low voltage is linear fused to the adjacent high voltage projection data, and so on, until the highest voltage for a complete projection information, and use the TV-ART algorithm to reconstruct it. Experiment shows that the proposed algorithm can completely reflect the information of a complicated structural component, and the pixel values are more stable. (authors)