首页>
外文期刊>Imaging Science in Dentistry
>Application of portable digital radiography for dental investigations of ancient Egyptian mummies during archaeological excavations: Evaluation and discussion of the advantages and limitations of different approaches and projections
【24h】
Application of portable digital radiography for dental investigations of ancient Egyptian mummies during archaeological excavations: Evaluation and discussion of the advantages and limitations of different approaches and projections
Purpose In the age of X-ray computed tomography (CT) and digital volume tomography (DVT), with their outstanding post-processing capabilities, indications for planar radiography for the study of the dentition of ancient Egyptian mummies may easily be overlooked. In this article, the advantages and limitations of different approaches and projections are discussed for planar oral and maxillofacial radiography using portable digital X-ray equipment during archaeological excavations. Furthermore, recommendations are provided regarding projections and sample positioning in this context. Materials and Methods A total of 55 specimens, including 19 skeletonized mandibles, 14 skeletonized skulls, 18 separate mummified heads, and 4 partially preserved mummies were imaged using portable digital X-ray equipment in the course of archaeological excavations led by the University of Basel in the Valley of the Kings between 2009 and 2012. Images were evaluated by 2 authors with regard to the visibility of diagnostically relevant dental structures using a 4-point grading system (Likert scale). Results Overall, the visibility of diagnostically relevant dental structures was rated highest by both authors on X-ray images acquired using a dental detector. The tube-shift technique in the lateral projections of mandibular dentition achieved the second-best rating, and lateral projections achieved the third-best rating. Conclusion Conventional planar digital X-ray imaging, due to its ubiquity, remains an excellent method–and often the only practicable one–for examining the skulls and teeth of ancient Egyptian mummies under field conditions. Radiographic images of excellent diagnostic quality can be obtained, if an appropriate methodology regarding the selected projections and sample placement is followed.
展开▼
机译：目的在X射线计算机断层扫描（CT）和数字体积断层扫描（DVT）时代，由于其出色的后处理能力，很容易忽视用于研究古埃及木乃伊牙列的平面X线摄影的适应症。在本文中，讨论了在考古发掘过程中使用便携式数字X射线设备进行平面口腔和颌面X线摄影的方法和投影方法的优点和局限性。此外，在这种情况下，还提供了有关投影和样品定位的建议。材料和方法在巴塞尔大学（University of Basel）领导的考古发掘过程中，使用便携式数字X射线设备对总共55个标本进行了成像，包括19个带骨架的下颌骨，14个带骨架的头骨，18个单独的木乃伊头部和4个部分保存的木乃伊。在2009年至2012年期间，在国王谷进行了评估。由2位作者使用4点分级系统（Likert量表）对诊断相关的牙齿结构的可见性进行了图像评估。结果总体而言，两位作者在使用牙科探测器获得的X射线图像上都将诊断相关的牙齿结构的可见度评为最高。下颌牙列侧向投影中的镜筒移位技术获得了第二佳的评价，而侧向投影获得了第三佳的评价。结论由于常规的平面数字X射线成像技术无处不在，它仍然是一种在野外条件下检查古埃及木乃伊的头骨和牙齿的极好方法，并且通常是唯一可行的方法。如果遵循有关所选投影和样品放置的适当方法，则可以获得具有出色诊断质量的放射线图像。
展开▼
