金属冠在不同距离的各种损伤对其检测的潜在影响形束计算机断层扫描与几个协议的扫描
Matheus Barros-Costa1, Eduarda Helena Leandro Nascimento2, Iago Filipe Correia-Dantas1
1Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil.
Imaging science in dentistry
|April 4, 2024
概括
金属皇冠不会影响形光束计算机断层扫描 (CBCT) 虫检测,但准确性较低,特别是在皇冠附近. 不建议CBCT用于检测早期病变的病变.
科学领域:
- 牙科放射学 牙科放射学
- 诊断成像诊断成像的使用
- 脏病检测 脏病检测
背景情况:
- 来自牙科修复的金属文物可以干扰成像准确度.
- 形束计算断层扫描 (CBCT) 越来越多地用于牙科诊断.
- 评估影响CBCT准确性的因素对于可靠的诊断至关重要.
研究的目的:
- 通过CBCT评估金属皇冠文物对近位腐烂检测的影响.
- 研究管道电流和金属工件减少 (MAR) 对诊断准确性的影响.
- 为了确定CBCT在检测初始病变方面的整体有效性.
主要方法:
- 使用CBCT用不同管电流 (4,8,12.5mA) 和MAR设置扫描了带有和没有金属冠的30颗牙.
- 五名观察员使用5分尺度评估了近端表面的虫.
- 进行统计分析 (多向ANOVA) 来比较诊断准确度指标.
主要成果:
- 诊断准确度 (曲线下的面积:0.40-0.60) 没有受到金属冠,管流或MAR的显著影响.
- 然而,在与金属冠状相邻的表面上,整体AUC和特异性显著降低.
- 敏感度在0.28-0.45之间,特异性在0.44-0.80.之间.
结论:
- 通过调整管道电流或使用MAR,CBCT检测的性能并没有得到改善.
- 金属冠的存在和接近它们显著降低了诊断准确度.
- CBCT不是一个可靠的工具来检测初始的邻近病变的病变.
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