【摘要】 Shepp-Logan头部模型是计算机断层图像重建(CT)领域仿真计算普遍采用的经典模型。我们提出一种新思路—以3D Shepp-Logan头部模型作为三维医学图像重建领域进行仿真实验和算法性能评测的基本参考模型。首先介绍了3D Shepp-Logan头部模型的设计与实现以及仿真投影数据的计算,进而描述了所设计的三维医学图像重建仿真计算过程。数值实验部分给出了基于3D Shepp-Logan头部模型的三维医学图像重建仿真实验。实验结果表明了新思路的可行性和模型计算的准确性。更多还原

【Abstract】 Shepp-Logan head phantom is the classical model of simulation computing in Computerized Tomography.This paper proposes a new method—considering 3D Shepp-Logan head phantom as the basic reference model to carry on simulation experiment and algorithms performance evaluating in three-dimension medical image reconstruction field.The paper introduces the design and the implementation of 3D Shepp-Logan head phantom as well the computing of projection data at first,and then describes the simulation process of the three-dimension medical image.The numerical experiment gives the three-dimension medical image reconstruction simulations based on 3D Shepp-Logan head phantom.The result of this experiment indicates the accuracy of model computing and the feasibility of our this method.更多还原