A device for ultrafast three-dimensional x-ray computed tomography with a scanned electron beam
A device for ultrafast three-dimensional x-ray computed tomography with a scanned electron beam
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DOI：
10.1109/nssmic.2011.6154317
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发表时间：
2011-10
期刊：
影响因子：
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通讯作者：
T. Sturzel;M. Bieberle;U. Hampel
中科院分区：
文献类型：
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作者：
T. Sturzel;M. Bieberle;U. Hampel
一种新颖的断层扫描设备已经实现，可实现每秒高达 1000 个体积帧的超快三维成像。这是通过在专门设计的环形 X 射线透明目标上扫描电子束来实现的。其37毫米的高度也是断层摄影体积的最大高度。最大实验直径为75毫米。该装置的设计类似于锥形束断层扫描，允许使用基于 Feldkamp 类型算法的图像重建。进行了各种模型实验，并证明在 250 s−1 的体积帧速率下具有高达 1.2 mm 的良好空间分辨率。最终，该设备被应用于对复杂的工业两相流进行成像，例如：在能源和过程工程。
A novel tomography device has been realised which enables ultrafast three-dimensional imaging with up to 1000 volume-frames per second. This is achieved by scanning an electron beam over a specially designed annular x-ray transparent target. Its height of 37 mm is also the maximum height of the tomography volume. The maximum experiment diameter is 75 mm. The design of the setup is similar to cone beam tomography which allows image reconstruction based on Feldkamp type algorithms to be used. Various phantom experiments were performed and proved good spatial resolution of up to 1.2 mm at a volume-frame rate of 250 s−1. Eventually, the device was applied to image complex industrial two-phase flows as can be found e.g. in energy and process engineering.