在共享微型CT扫描上进行二维牙科测量时,观察者间处理和测量误差较低
Kaita N Gurian1, Debra Guatelli-Steinberg1, W Scott McGraw1
1Department of Anthropology, Ohio State University, Columbus, Ohio, USA.
American journal of biological anthropology
|January 31, 2025
概括
分享微型计算机断层扫描 (μCT) 扫描牙是可靠的. 不同的研究人员可以重建,切片和测量μCT扫描,观察者间误差较低,确保数据可访问性并减少重复扫描的需要.
科学领域:
- 古生物学的古生物学
- 生物考古学的生物考古学
- 牙科人类学 牙科人类学
背景情况:
- 分享微型计算机断层扫描 (μCT) 扫描可以提高数据的可访问性,并减少对标本重新扫描的需求.
- 当多个研究人员使用相同的μCT数据 (TIFF堆或DICOM) 时,存在新的错误的可能性.
研究的目的:
- 调查不同个体使用相同的μCT扫描是否会产生可比的结果.
- 用μCT数据评估灵长类动物牙重建,切片和测量的观察者间误差.
主要方法:
- 在22微米分辨率下,微CT扫描已磨损和未磨损的*Cercocebus atys*上.
- 两个人从TIFF堆中创建了2D牙切片;两个人重建了磨损的牙.
- 三位研究人员测量了牙形状,线性牙质厚度,平均牙质厚度和相对牙质厚度 (AET和RET),计算了观察者之间的百分比误差.
主要成果:
- 在所有测量中,观察者间误差一般很低.
- 对于未磨损的牙,测量误差主要归因于执行测量的个人.
- 对于磨损的牙,重建过程为AET和RET带来了统计学上显著的变化.
结论:
- 不同的研究人员可以可靠地使用相同的μCT扫描来进行重建,切片和测量.
- 观察者间误差通常很低,尽管线性测量更容易出现错误.
- 在μCT分析中,与未磨损的牙相比,磨损的牙不会引入额外的错误来源.
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