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近年来,各种X射线三维无损成像技术在古生物学领域的应用越来越广泛。但是,不同的X射线三维无损成像技术针对不同保存类型和尺寸的化石标本在成像效果上各有利弊。本文以埃迪卡拉纪陡山沱组磷酸盐化的动物胚胎化石为研究对象,将目前应用最广的两种X射线三维无损成像方法,即基于实验室X光源的吸收衬度显微断层成像技术和基于同步辐射光源的相位衬度显微断层成像技术进行了对比分析。通过对两种技术的原理、效率、空间分辨率和图像衬度的对比,认为基于同步辐射光源的相位衬度显微断层成像技术是目前对于均一矿化的微体化石最佳的三维无损成像解决方案。
In recent years, various X-ray three-dimensional non-destructive imaging techniques have become more and more widely used in paleontology. However, different X-ray three-dimensional non-destructive imaging techniques have their own advantages and disadvantages in imaging effects for different types and sizes of fossil specimens. In this paper, the animal embryonic fossils phosphated in the Doushantuo Formation of Edicala are selected as research objects. Two types of X-ray non-destructive imaging methods, which are the most widely used, are the absorption contrast microscopic tomography Phase contrast microscopy tomography based on synchrotron radiation source. By comparing the principle, efficiency, spatial resolution and image contrast of the two technologies, it is considered that phase contrast microscopic tomography based on synchrotron radiation source is the best three-dimensional nondestructive imaging for uniformly mineralized microfossils solution.