优化锥形束计算机断层扫描曝光,实现有效辐射剂量与图像质量的平衡。

IF 1.7 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Imaging Science in Dentistry Pub Date : 2024-06-01 Epub Date: 2024-04-02 DOI:10.5624/isd.20230251
Ananda Amaral Santos, Brunno Santos de Freitas Silva, Fernanda Ferreira Nunes Correia, Eleazar Mezaiko, Camila Ferro de Souza Roriz, Maria Alves Garcia Silva, Deborah Queiroz Freitas, Fernanda Paula Yamamoto-Silva
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引用次数: 0

摘要

目的:本研究旨在评估不同的锥束计算机断层扫描(CBCT)采集方案对降低有效辐射剂量同时保持图像质量的影响:CBCT 设备发射的有效剂量是通过放置在 Rando Alderson 模型中的热释光剂量计计算得出的。图像质量由 3 名经验丰富的评估人员进行评估。图像质量与可信度之间的关系采用费雪精确检验进行评估,评分者之间的一致性采用卡帕检验进行评估。进行了多元线性回归分析,以研究技术参数能否预测有效剂量。P值结果:优化方案(3 mA、99 kVp、450 幅投影图像)显示出良好的图像质量和较低的辐射敏感器官有效剂量。所有结构的图像质量和可信度值一致(PP=0.027),千伏峰值(b=0.589;t=3.979;P=0.016)和投影图像数量(b=0.557;t=3.762;P=0.020)是有效剂量的预测因素:结论:通过调整毫安培数和投影图像,优化 CBCT 采集方案可显著降低有效辐射剂量,同时保持可接受的图像质量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimizing cone-beam computed tomography exposure for an effective radiation dose and image quality balance.

Purpose: The aim of this study was to evaluate the influence of different cone-beam computed tomography (CBCT) acquisition protocols on reducing the effective radiation dose while maintaining image quality.

Materials and methods: The effective dose emitted by a CBCT device was calculated using thermoluminescent dosimeters placed in a Rando Alderson phantom. Image quality was assessed by 3 experienced evaluators. The relationship between image quality and confidence was evaluated using the Fisher exact test, and the agreement among raters was assessed using the kappa test. Multiple linear regression analysis was performed to investigate whether the technical parameters could predict the effective dose. P-values<0.05 were considered to indicate statistical significance.

Results: The optimized protocol (3 mA, 99 kVp, and 450 projection images) demonstrated good image quality and a lower effective dose for radiation-sensitive organs. Image quality and confidence had consistent values for all structures (P<0.05). Multiple linear regression analysis resulted in a statistically significant model. The milliamperage (b=0.504; t=3.406; P=0.027), kilovoltage peak (b=0.589; t=3.979; P=0.016) and number of projection images (b=0.557; t=3.762; P=0.020) were predictors of the effective dose.

Conclusion: Optimized CBCT acquisition protocols can significantly reduce the effective radiation dose while maintaining acceptable image quality by adjusting the milliamperage and projection images.

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来源期刊
Imaging Science in Dentistry
Imaging Science in Dentistry DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
2.90
自引率
11.10%
发文量
42
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