Attenuation correction of polychromatic L-shell X-ray fluorescence computed tomography imaging
Attenuation correction of polychromatic L-shell X-ray fluorescence computed tomography imaging
复制标题
多色L壳X射线荧光计算机断层成像的衰减校正
DOI：
10.1080/00223131.2019.1585985
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发表时间：
2019-03
影响因子：
1.2
通讯作者：
Ding Ning
中科院分区：
文献类型：
--
作者：
Liu Long;Zhou Xiaolin;Liu Huanlong;Ding Ning
ABSTRACT Polychromatic L-shell X-ray fluorescence computed tomography is a promising imaging technique to explore the element distribution of the sample. However, the image quality of large samples would be decreased dramatically due to the present of the self-absorption. In this investigation, an attenuation correction algorithm based on theories related to X-ray fluorescence was proposed. With this method, the attenuation coefficients at the incident energies were expressed as a function of known X-ray energies and unknown platinum concentrations. Then the attenuation coefficients were calculated based on the theories and added in the contribution value of the pixel in Maximum Likelihood Expectation Maximization reconstruction method. The element distributions can be got through continuous iterations. Finally, the feasibility of this method was tested by Monte Carlo simulation. The results indicated that, for a 4-mm diameter phantom containing an object of 2 mm in diameter with 0.10 wt% platinum solutions, the CNR of reconstructed images increased from 53.5 to 203.8 after attenuation correction while the relative error decreases from 97% to 2%.
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影响因子：
7.6
作者：
Jiang S;He P;Deng L;Chen M;Wei B
通讯作者：
Wei B
DOI：
10.1016/j.nima.2007.05.025
发表时间：
2007-09
影响因子：
1.4
作者：
A. Miceli;R. Thierry;M. Bettuzzi;A. Flisch;J. Hofmann;U. Sennhauser;F. Casali
通讯作者：
A. Miceli;R. Thierry;M. Bettuzzi;A. Flisch;J. Hofmann;U. Sennhauser;F. Casali
采用传统 X 射线管和光子计数探测器的全场扇形束 X 射线荧光计算机断层扫描，用于快速纳米颗粒生物成像
影响因子：
1.3
作者：
Li, Liang;Zhang, Siyuan;Chen, Zhiqiang
通讯作者：
Chen, Zhiqiang
自吸收校正 X 射线荧光计算机断层扫描的数值和蒙特卡罗模拟
影响因子：
--
作者：
Jiang Shanghai;Wei Biao;Feng Peng;He Peng;Deng Luzhen;Chen Mianyi
通讯作者：
Chen Mianyi
DOI：
10.1154/s037603080000152x
发表时间：
1961
期刊：
Advances in x-ray analysis
影响因子：
--
作者：
J. Leroux
通讯作者：
J. Leroux