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特拉赫兹风扇束计算机断层扫描

Sishi Shen, Congjing Hao, Bin Liang

|May 1, 2024

概括

一个新的太赫兹 (THz) 风扇束计算断层扫描 (CT) 系统使用独特的板束来改进3D成像. 这种第二代THz CT提供了更快的数据收集和增强的非破坏性测试功能.

科学领域:

物理物理学物理
工程工程师工程师工程师
图像技术技术的成像技术

背景情况:

传统的太赫兹计算断层扫描 (CT) 系统通常使用并行光束和对称的4f结构.
这些系统可能受到数据采集时间和成像深度的限制.
为了更高效的3D成像,需要推进太赫兹光束技术.

研究的目的:

提出和演示一个新的太赫兹 (THz) 风扇束计算机断层扫描 (CT) 系统.
为了提高成像性能,使用连续波板光束.
为第二代THz CT系统奠定基础.

主要方法:

开发一个太赫兹 (THz) 风扇束计算断层扫描 (CT) 系统.
采用0.3 THz的连续波板束,它以风扇形状膨胀.
在纸箱内重建3D金属杆结构,以展示可行性.

主要成果:

拟议的风扇光束THz CT系统成功地重建了金属杆的3D内部结构.
该系统采用无衍射板束,使传播不变的焦线和延长的深度可行.
数据采集时间因使用线性阵列探测器而缩短.

结论:

开发的风扇光 THz CT 系统代表了显著的进步,作为第二代 THz CT 的模板.
这项技术为非破坏性测试提供了一种有效的额外方法.
该系统在3D成像过程中保留了横截面结构的几何放大特征.

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