结果：用该直接投影机能显示出模型的断层图像。
Results: the direct projection tomography machine can display tomography image of the model.
前言：目的：探讨直接投影断层成像技术的一般原理及其使用价值。
Objective: to study the theory and the value of direct projection tomography technology.
同时还讨论了体素尺寸、几何映射获取投影矩阵以及探测器尺寸与成像物体尺寸比值对断层图像空间分辨率的影响。
Then the effects of the voxel size, the geometrical mapping of the projection matrix and the ratio of detector size to imaging object size, on the spatial resolution were discussed.
为了在普通PC机上实现计算机断层扫描(CT)快速重建，提出了利用查找表和极坐标反投影快速重建方法。
In order to realize ct fast reconstruction on an ordinary PC, a fast reconstruction process using look-up table and polar coordinate back-projection was presented.
为了在普通PC机上实现计算机断层扫描(CT)快速重建，提出了利用查找表和极坐标反投影快速重建方法。
In order to realize ct fast reconstruction on an ordinary PC, a fast reconstruction process using look-up table and polar coordinate back-projection was presented.
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