Evaluation of Barium sulfate-copper breast radiation shield for use in thoracic Computed Tomography Examinations

IF 1.4 4区医学 Q4 ENVIRONMENTAL SCIENCES

Radioprotection Pub Date : 2024-07-12 DOI:10.1051/radiopro/2024025

F. Poursoltani, M. Behmadi, M. Keshtkar, M. Ghorbani, F. Paknazar, P. Hejazi

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引用次数: 0

Abstract

Introduction: In thoracic computed tomography (CT) examinations, patients' breasts are exposed to high radiation doses, necessitating the need to reduce the received dose. The aim of this study was to evaluate the efficiency of a new composition of a shielding material with minimal impact on image quality. Materials and methods: Different breast shields were manufactured with varying weight percentages of copper and BaSO4. Thermoluminescent dosimeters (TLD) and thorax phantoms were used to assess the radiation shielding effectiveness. Image quality, in terms of noise and CT number accuracy, was quantitatively evaluated on a CTDI phantom. Additionally, a controlled trial with 60 female participants was conducted to further assess image quality and select the best breast radiation shield. Results: The results indicated that the different shield compositions reduced the surface dose by 14.17-51.69%. The shield with a composition of 90% Cu-10% BaSO4 and 50% Cu-50% BaSO4 had the lowest noise, while the 100% bismuth shield had the highest noise. Importantly, the 50% Cu-50% BaSO4 shield did not cause artifacts in the thoracic CT images. Conclusion: By using the 50% Cu-50% BaSO4 shield, a significant dose reduction was achieved while maintaining appropriate image quality, making it suitable for clinical applications.

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评估用于胸部计算机断层扫描检查的硫酸钡-铜乳腺辐射防护罩

简介在胸部计算机断层扫描（CT）检查中，患者的乳房会受到高剂量的辐射，因此有必要减少接收的剂量。本研究旨在评估一种对图像质量影响最小的新型屏蔽材料的效率。材料和方法：用不同重量百分比的铜和硫酸钡制造不同的乳房屏蔽。使用热释光剂量计（TLD）和胸部模型来评估辐射屏蔽效果。在 CTDI 模型上对噪声和 CT 数字准确性方面的图像质量进行了定量评估。此外，还对 60 名女性参与者进行了对照试验，以进一步评估图像质量和选择最佳乳腺辐射屏蔽。结果显示结果表明，不同成分的防护罩可将表面剂量降低 14.17%-51.69%。90% Cu-10% BaSO4 和 50% Cu-50% BaSO4 组成的屏蔽噪音最低，而 100% 铋组成的屏蔽噪音最高。重要的是，50% Cu-50% BaSO4 屏蔽体不会在胸部 CT 图像中产生伪影。结论通过使用 50% Cu-50% BaSO4 屏蔽层，可显著降低剂量，同时保持适当的图像质量，适合临床应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Radioprotection ENVIRONMENTAL SCIENCES-PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH

CiteScore

3.30

自引率

54.50%

发文量

审稿时长

>12 weeks

期刊介绍： Radioprotection publishes articles on all aspects of radiological protection, including non-ionising as well as ionising radiations. Fields of interest range from research, development and theory to operational matters, education and training. The very wide spectrum of its topics includes (theoretical and practical aspects): dosimetry, instrument development, specialized measuring techniques, epidemiology, biological effects (in vivo and in vitro) and risk and environmental impact assessments.