| 基于微焦点CT与数据约束模型的古代家猪牙齿显微结构研究 |
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| 引用本文： | 张旭芳,王海鹏,李君,马杰,李建莉,杨玉双,侯亮亮,李莉.基于微焦点CT与数据约束模型的古代家猪牙齿显微结构研究[J].CT理论与应用研究,2020,29(6):677-685. |
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| 作者姓名： | 张旭芳 王海鹏 李君 马杰 李建莉 杨玉双 侯亮亮 李莉 |
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| 作者单位： | 1. 山西大学 a)理论物理研究所;b)物理电子工程学院;c)历史文化学院;d)物理电子工程学院, 激光光谱研究所, 量子光学与光量子器件国家重点实验室, 太原 030006; |
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| 基金项目： | 国家自然科学基金（21206087） |
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| 摘 要： | 本文对一例考古发掘出土的古代家猪下颌骨及牙齿进行了微焦点CT成像，通过加置滤波片有效减弱了线束硬化对CT图像的影响。基于数据约束模型（DCM）对样品三维结构进行了定量计算，获取了包含小于CT图像体元尺寸在内的样品跨尺度结构信息。对样品中孔隙及高吸收组分的联通特性进行了跨尺度计算，得到这两种组分的三维团簇分布。与常见的图像阈值分割法相比，DCM模型有效减弱了部分体积效应对图像分析的影响。本文研究结果为考古样品的内部形态测量、结构分析提供了数据基础，为考古样品的数字建模存档提供一种新的方法。
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| 关 键 词： | 微焦点CT 数据约束模型 跨尺度结构 |
| 收稿时间： | 2020-06-30 |
Study on the Microstructure of Ancient Pig Teeth Based on Micro-CT and Data-constrained Modeling |
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| Institution: | 1. a). Institute of Theoretical Physics and Department of Physics;b). College of Physics and Electronics Engineering;c). College of History and Culture;d). State Key Laboratory of Quantum Optics and Quantum Optic Devices, Institute of Laser Spectroscopy, College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China;2. CSIRO, Private Bag 10, Clayton, Victoria 3169, Australia |
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| Abstract: | In this paper,the jaw bone and teeth of an ancient pig unearthed from a historic site were imaged using a micro-CT.The three-dimensional(3D) structure of the sample was quantitatively calculated based on data-constrained modeling(DCM).The multi-scale structure of the sample including those smaller than CT imaging resolution size was obtained.The multi-scale connectivity of pore and high X-ray absorption compositions in the sample were calculated respectively.The 3D distribution form of pore and high X-ray absorption compositions clusters was obtained.Compared with common image threshold segmentation method,DCM efficiently reduces the influence of partial volume effect on image analysis.The results of this study provide a data basis for the internal morphological measurement and structural analysis of archaeological samples.The method presented in this paper can be applied to the digital modeling and archiving of archaeological samples. |
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