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评价和比较由二氧化和烯酸产生的对比度和噪声比率:一个幻影研究

Ben Philip Sylvan Bartlett¹, Hassem Geha¹, Rujuta Katkar¹

¹Department of Comprehensive Dentistry, University of Texas Health San Antonio, San Antonio, USA.

Imaging science in dentistry

|January 15, 2026

概括

优化圆束计算机断层扫描 (CBCT) 设置对于精确的牙科修复成像至关重要. 二氧化 (LD) 和需要不同的CBCT参数,以获得最佳的对比度与噪声比 (CNR) 和诊断质量.

科学领域:

牙科材料科学牙科材料科学
放射学放射学是一门学科.
生物医学成像技术生物医学成像技术

背景情况:

圆束计算断层扫描 (CBCT) 对于牙科诊断至关重要.
恢复性材料,如二氧化 (LD) 和可以导致成像工件.
优化CBCT参数是必要的,以克服材料诱导的工件,并提高图像质量.

研究的目的:

评估二酸盐 (LD) 和的修复材料对CBCT成像中对比度和噪声比率 (CNR) 的影响.
在各种CBCT机器设置和金属工件减少 (MAR) 协议下比较LD和合金之间的CNR.

主要方法:

在多次曝光设置下使用两台CBCT机器 (Planmeca,PreXion) 进行LD和的CNR比较.
研究了金属工件减小 (MAR) 和不同音量尺寸对CNR的影响.
使用ImageJ和配对t测试分析了CNR数据.

主要成果:

二氧化 (LD) 在没有MAR的Planmeca和所有PreXion设置中显示出更高的CNR.
齐尔科尼亚在Planmeca机器上以MAR优于LD的性能.
最佳设置各不相同:较大的voxels与MAR为,较小的voxels与MAR为LD.

结论:

应根据修复材料 (LD与石),诊断要求和辐射剂量来定制CBCT成像协议.
定制voxel大小和MAR应用是增强特定牙科修复材料的CNR的关键.
这些发现有助于优化CBCT成像对于牙科修复患者.

关键词:

艺术品文物文物陶制品在陶方面.圆束计算机断层扫描仪皇冠皇冠皇冠噪声噪声噪声

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