| 差分吸收光谱CT诊断技术 |
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| 引用本文： | 李春芳.差分吸收光谱CT诊断技术[J].光子学报,2014,39(6):1010-1013. |
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| 作者姓名： | 李春芳 |
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| 作者单位： | （中南民族大学 电子与信息工程学院,武汉 430074） |
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| 基金项目： | 国家自然科学基金（69878007）资助项目 |
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| 摘 要： | 提出了浓度场测量的差分吸收光谱层析技术,设计出一种由光源及控制系统、光学扫描测量系统和数据采集及处理系统三部分组成的典型差分吸收光谱层析诊断系统.采用改进的联合代数重建算法进行层析图像重建,数值模拟结果表明：在0°~180°视场范围内,在4个不同的投影方向获取投影数据的条件下,能有效地重建出待测场分布,其最大误差不大于5％,平均误差不大于1％.
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| 关 键 词： | 差分吸收 图像重建 CT技术 数值模拟 |
| 收稿时间： | 2008-11-04 |
Computerized Tomography Technique Based on Differential Optical Absorption Spectroscopy |
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| LI Chun-Fang.Computerized Tomography Technique Based on Differential Optical Absorption Spectroscopy[J].Acta Photonica Sinica,2014,39(6):1010-1013. |
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| Authors: | LI Chun-Fang |
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| Institution: | College of Electronics and Information Engineering,South Central University for Nationalities,Wuhan 430074,China |
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| Abstract: | A new computerized tomography (CT) technique based on differential optical absorption spectroscopy for the measurement of concentration field is proposed.A typical CT diagnoses system is designed,which consists of three parts: the lamp-house and its control system,the optical scanning measurement system and the data collecting and processing system,and numerical simulations are made.The results show that the projection data are obtained at only four viewing directions from range 0° to 180°,the maximum error of reconstruction image is less than 5％,and the average error is less than 1％. |
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| Keywords: | Differential absorption Image reconstruction Computerized Tomography(CT) Numerical simulation |
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