一个简化的低成本幻影用于对牙圆束计算机断层扫描单元的图像质量评估
James Anthony Rabba1,2, Hanis Arina Jaafar1, Fatanah Mohamad Suhaimi1
1Advanced Medical and Dental Institute, Universiti Sains Malaysia, Penang, Malaysia.
Journal of medical radiation sciences
|November 15, 2023
概括
一个低成本的,制造的幻影有效地评估牙圆束计算机断层扫描 (CBCT) 图像质量. 这种经济实惠的工具提供了准确的CT数量和线性测量,使其适合各种牙科成像中心.
科学领域:
- 放射学 放射学是一门学科.
- 牙科成像 牙科成像 牙科成像
- 医学物理 医学物理
背景情况:
- 评估牙圆束计算机断层扫描 (CBCT) 性能和图像质量 (IQ) 的标准化协议是有限的.
- 商业上可用的测试工具对于许多牙科中心来说往往是过于昂贵的.
研究的目的:
- 为了评估数字CBCT单元的图像质量评估 (IQA) 的低成本,制造的幻影的性能.
- 为常规CBCT绩效评估提供一个负担得起的替代方案.
主要方法:
- 一个定制的聚甲基甲酸 (PMMA) 幻影被设计用于评估Planmeca ProMax 3D Mid CBCT单元.
- 幻影包括层来测试CT数的准确性,统一性,噪声和线性,使用标准的临床协议.
- 兴趣区域分析测量了空气和水的CT数量和噪声,并将它们与参考值进行比较.
主要成果:
- 对空气 (-994.1 HU) 和水 (-2.4 HU) 的测量平均CT数值处于可接受的范围内.
- 线性测试表明,测量的Hounsfield单位 (HU) 和插入密度之间存在强烈的正相关性 (R2 = 0.9693).
- 幻影在评估关键图像质量参数方面被证明是有效的.
结论:
- 制造的幻影是数字牙科CBCT成像质量评估的简单而实惠的工具.
- 它为需要具有成本效益的CBCT绩效评估的中心提供了可行的解决方案.
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