Research on Digitally Reconstructed Radiograph Algorithm Improvement Based on Computed Tomography Image

Abstract

A fast ray tracing algorithm from sequence tomographic images for digitally reconstructed radiograph was presented. A ray tracing algorithm based on vector was adopted, and using computed tomography data simulated the absorption of radiation from human tissues,. The algorithm only has the addition and the subtraction operation, and the computation is simple. The algorithm does not need to obtain the corresponding intersection by solving the equation, and it has the characteristics of short imaging time and fast computing speed. At the same time, this paper improves the algorithm of 3D prosthesis storage and retrieval, and the algorithm realized online digitally reconstructed radiograph calculation, which greatly improves the computing speed. Finally, the digitally reconstructed radiograph images obtained in this paper were further processed digitally to improve their practical value.