高密度物体的位置和数量的变化会影响形光束计算机断层扫描图像中体积变化物体的表达
Fernanda Coelho-Silva1, Deivi Cascante-Sequeira1, Lucas P Lopes Rosado1
1Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil.
Imaging science in dentistry
|July 3, 2025
概括
高密度物体的数量和位置会影响圆束计算机断层扫描 (CBCT) 图像中的体积变化 (VA) 工件. 具体来说,三个物体减少了VA,而后部定位增加了VA.
科学领域:
- 牙科成像 牙科成像 牙科成像
- 放射学 放射学是一门学科.
- 医学物理 医学物理
背景情况:
- 形束计算断层扫描 (CBCT) 在牙科中被广泛使用.
- 高密度物体可以在CBCT中引起体积变化 (VA) 工件.
- 了解影响VA的因素对于准确的成像至关重要.
研究的目的:
- 在CBCT中调查高密度物体数量和位置对VA文物的影响.
- 在不同的材料 (-,,) 中比较VA.
- 评估两个CBCT系统 (OP300 Maxio和Eagle) 之间的潜在差异.
主要方法:
- 四个不同材料的圆柱体被放置在一个幻影中,有7种组合.
- 使用两种不同的系统获得CBCT扫描.
- 计算了体积变化,并进行了统计分析.
主要成果:
- 在所有条件下都存在体积变化 (VA).
- 物体的数量,它们的位置 (前/后) 和材料显著影响了VA (P<0.05).
- 三个物体减少了VA (P<0.05),后部定位增加了VA (P<0.05),显示了最低的VA (P<0.05).
结论:
- 三个高密度物体的存在减少了CBCT图像中的VA.
- 在后部区域放置物体通常会增加测量体积.
- 材料类型,特别是,影响VA的程度.
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