双能X射线断层扫描的实验可行性,用于在水透过程中在本托尼特中进行双相密度分析
Janne Yliharju1, Tero Harjupatana2, Enni Rajala2
1University of Jyväskylä, Department of Physics, Nanoscience Center, Jyväskylä, Finland. janne.t.yliharju@jyu.fi.
Scientific reports
|November 5, 2025
概括
双能X射线计算机断层扫描 (DECT) 准确量化了本托尼特中的4D水含量. 对散射和光束硬化进行校正对于该方法的可靠量化结果至关重要.
科学领域:
- 地质技术工程 地质技术工程
- 材料科学 材料科学 材料科学
- 医学成像物理 医学成像物理
背景情况:
- 在地质技术应用中,精确的4D水含量监测在本托尼特中至关重要.
- 评估水含量的传统方法可能具有破坏性或缺乏时空分辨率.
研究的目的:
- 评估双能X射线计算机断层扫描 (DECT) 的可行性,用于托尼特-水系统的定量4D分析.
- 评估散射和光束硬化校正对DECT准确性的影响.
主要方法:
- 压缩的顿石样本在水透之前和之后使用X射线微图扫描进行成像.
- 使用beam-stop阵列测量和信号对厚度校准,纠正了散射和光束硬化效应.
- 使用重建后材料分解 (MD) 技术来推导部分密度和水含量分布.
主要成果:
- DECT以相当准确的方法提供了4D水含量分布在本托尼特中的定量估计.
- 结果与切片样本的重力度测量和基于变形测量的断层扫描方法进行了验证.
- 发现散射和梁硬化校正对于精确的重建后材料分解至关重要.
结论:
- DECT是一种可行的技术,用于在本托尼特中定量4D水含量测定.
- 准确的光谱测量和强大的校正方法是可靠的DECT分析所必需的.
- 这种技术提供了一种非破坏性的方法来研究多孔材料中的动态水运输.
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