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Updated: May 27, 2025
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Energy Dispersive X-ray Tomography for 3D Elemental Mapping of Individual Nanoparticles
Published on: July 5, 2016
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Quantitative elemental sensitive imaging based on K-edge subtraction tomography
Yichi Zhang1,2,3, Fen Tao1,2,3, Ruoyang Gao1,2,3
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China.
Journal of X-Ray Science and Technology
|February 20, 2025
Summary
This study introduces a new quantitative method for elemental analysis using K-edge subtraction (KES) tomography. The technique achieves nanometer-scale elemental imaging with high accuracy, enabling precise elemental composition assessments.
Area of Science:
- Materials Science
- Physics
- Medical Imaging
Background:
- K-edge subtraction (KES) tomography is a powerful technique for elemental sensitive imaging.
- Existing KES tomography methods primarily offer qualitative elemental analysis.
- There is a need for quantitative elemental assessment in KES tomography.
Purpose of the Study:
- To develop a novel method for quantitative elemental analysis using KES tomography.
- To enable precise and convenient elemental composition measurements.
- To expand the applications of KES tomography.
Main Methods:
- Established a linear correlation between slice grayscale and linear absorption coefficients.
- Utilized grayscale data for quantitative estimation of elemental compositions.
- Validated the method using standard and actual samples.
Main Results:
- Achieved nanometer-resolved quantitative elemental sensitive imaging.
- Demonstrated a relative error of less than 3% in target elemental content.
- Confirmed the accuracy and validity of the proposed quantitative method.
Conclusions:
- The developed method provides a novel approach for precise quantitative elemental analysis.
- This technique is expected to broaden the applications of KES tomography.
- Offers a more convenient way to perform quantitative elemental assessments.
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