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Finite element compton tomography

机译:有限元康普顿断层扫描

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摘要

In this paper a new approach to 3D Compton imaging is presented, based on a kind of finite element (FE) analysis. A window for X-ray incoherent scattering (or Compton scattering) attenuation coefficients is identified for breast cancer diagnosis, for hard X-ray photon energy of 100-300 keV. The point-by-point power/energy budget is computed, based on a 2D array of X-ray pencil beams, scanned vertically. The acceptable medical doses are also computed. The proposed finite element tomography (FET) can be an alternative to X-ray mammography, tomography, and tomosynthesis. In experiments, 100 keV (on average) X-ray photons are applied, and a new type of pencil beam collimation, based on a Lobster-Eye Lens (LEL), is proposed.
机译:在本文中,基于一种有限元(FE)分析,提出了一种新的3D Compton成像方法。对于100-300 keV的硬X射线光子能量,可以确定用于乳腺癌诊断的X射线非相干散射(或Compton散射)衰减系数的窗口。基于垂直扫描的X射线笔形光束的2D阵列,计算逐点功率/能量预算。还可以计算出可接受的医疗剂量。拟议中的有限元层析成像(FET)可以替代X射线层析成像,层析成像和断层合成。在实验中,应用了100 keV(平均)的X射线光子,并提出了一种基于龙虾眼透镜(LEL)的新型笔形光束准直仪。

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