The use of anthropomorphic phantoms for patient dose and image contrast surveys in digital radiography

IF 1.8 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2025-09-20 DOI:10.1016/j.apradiso.2025.112201

Doğan Bor , Betul Yaman , Özlem Birgul , Yusuf Serdar Akyar , Turan Olgar

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引用次数: 0

Abstract

This work aims to investigate the relationship of dose and local contrast values between the standard anthropomorphic phantoms and patients with different body mass index (BMI) in chest and abdominal radiography. Entrance Surface Air Kerma (ESAK) values for chest and abdomen examinations were determined for patients categorized into three BMI groups and they were also measured for chest and abdomen anthropomorphic phantoms using three digital radiographic systems. Tissue regions were selected from different anatomical structures for the measurement of image contrast from patient and phantom images. Since the phantoms used are constructed to represent standard body size, ESAK values for these phantoms did not correlate “well” with the results from patients having different body mass index (BMI) for some examinations and systems. The means ESAK for thorax and abdomen examinations was 0.16 and 1.46 mGy, respectively. The calculated mean effective dose was 0.03 mSv for thorax and 0.20 mSv for abdomen examinations. For three digital radiographic systems, while a moderate or strong Spearman rank correlation coefficient (r_s = 0.601–0.794) was established between ESAK and BMI for thorax examinations, strong or very strong correlation (r_s = 0.710–0.904) was determined for abdomen examinations. The contrast between different tissue regions measured from the phantoms generally matched the patient results. It is shown that the use of phantom data, which are recorded using similar exposure and processing parameters to patient examinations, can provide useful information for better evaluation of patient results.

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在数字放射照相中使用拟人幻象进行病人剂量和图像对比调查

本研究旨在探讨标准拟人幻象与不同身体质量指数（BMI）患者胸腹x线片剂量和局部对比值的关系。将患者分为三个BMI组，确定其胸腹检查的入口表面空气Kerma （ESAK）值，并使用三种数字x线摄影系统测量其胸腹拟人化幻象。从不同的解剖结构中选择组织区域用于测量患者和幻影图像的图像对比度。由于所使用的幻影是用来表示标准体型的，因此这些幻影的ESAK值与某些检查和系统中具有不同体重指数（BMI）的患者的结果并没有“很好”地相关。胸腹检查的ESAK平均值分别为0.16和1.46 mGy。计算的平均有效剂量为胸部0.03毫西弗，腹部0.20毫西弗。对于三种数字x线摄影系统，胸部检查的ESAK与BMI之间存在中等或较强的Spearman秩相关系数（rs = 0.601-0.794），腹部检查的ESAK与BMI之间存在较强或很强的相关性（rs = 0.710-0.904）。从幻影中测量的不同组织区域之间的对比基本上与患者的结果相匹配。研究表明，使用与患者检查相似的暴露和处理参数记录的幻像数据可以为更好地评估患者结果提供有用的信息。

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

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.