Computer Simulation of Data Collection in CT
Computer Simulation of Data Collection in CT
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DOI：
10.1007/978-1-84628-723-7_4
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发表时间：
2009-01-01
期刊：
影响因子：
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通讯作者：
Herman, Gabor T.
中科院分区：
文献类型：
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作者：
Herman, Gabor T.
虽然 CT 的目标是根据实际 X 射线投影重建真实物体，但 CT 的理论发展在很大程度上要归功于根据计算机模拟投影数据重建数学描述的物体（体模）。其根本原因是计算机模拟使我们能够单独研究物理上无法分离的各种现象。例如，由于光子统计和散射，X 射线数据总是包含噪声，但模拟可以指示噪声和散射的具体单独影响。
While the aim of CT is the reconstruction of real objects from their actual x-ray projections, the theoretical development of CT owes a lot to reconstruction of mathematically described objects (phantoms) from computer simulated projection data. The basic reason for this is that computer simulation enables us to investigate individually various phenomena that cannot be separated physically. For example, x-ray data always contain noise due to both photon statistics and scatter, but simulation can indicate the specific separate effects of noise and scatter.