Tate J R, Cann C E
Am J Phys Anthropol. 1982 May;58(1):67-73. doi: 10.1002/ajpa.1330580108.
Special methods have been developed to use computed tomography (CT) for 3-dimensional imaging of both fossil and extant bones. Most commercial CT scanners cannot display the internal structure of fossils because the very high density is beyond the upper limits of the normal CT number scale (Hounsfield scale) of the scanners. X-ray projections from CT scans of fossils were modified by scaling the data to provide an expanded CT number scale, allowing the internal structure of highly fossilized objects to be visualized. These images were compared with state-of-the-art, high-resolution CT images of extant bone. Special image reformatting software was used to provide qualitative and quantitative 3-dimensional imaging. The recent rapid advances in CT technology have made this imaging modality the procedure of choice in much of diagnostic radiology. Use of this tool in paleoanthropology has been limited in the past by restricted access to scanners. However, new developments in CT will make this technique available to many researchers in the near future.
已经开发出了特殊方法，利用计算机断层扫描（CT）对化石骨骼和现存骨骼进行三维成像。大多数商用CT扫描仪无法显示化石的内部结构，因为其极高的密度超出了扫描仪正常CT数值范围（亨氏单位）的上限。通过对化石CT扫描的X射线投影数据进行缩放，以提供扩展的CT数值范围，从而对数据进行修改，使高度石化物体的内部结构得以可视化。这些图像与现存骨骼的先进高分辨率CT图像进行了比较。使用特殊的图像重新格式化软件来提供定性和定量的三维成像。CT技术最近的快速发展使其成为许多诊断放射学领域首选的检查方法。过去，由于使用扫描仪受限，该工具在古人类学中的应用受到了限制。然而，CT的新发展将使这项技术在不久的将来可供许多研究人员使用。
