投影幅数和采样间隔对CT重建能力的影响

Analysis of the Factors Affecting the Reconstruction Capability

目的 探讨投影幅数和采样间隔对 CT重建能力的影响程度 ,为图像重建时选择参数提供依据 .方法 通过计算机仿真测定参数值不同时 CT重建图像的能力 .结果 CT的图像重建能力与投影幅数和采样间隔的大小密切相关 .结论 通过增大投影幅数或减小采样间隔可以提高

Aim\ To research the effect of projection numbers and sampling intervals on CT reconstruction capability in order to offer a basis to the system parameter for selecting. Methods\ For measuring the reconstruction capability of differen t parameters, the simulation is used. Results\ The reconstruction capability is closely related to the p rojection numbers and sampling intervals. Conclusion\ By increasing projection number or reducing saupling i nterval, the reconstruction capability can be improved.