Size specific dose estimates for adult patients in CT of the Kidney, Ureters, and Bladder (KUB) based on effective diameter and water equivalent diameter

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-01-08 DOI:10.1016/j.radphyschem.2025.112523

Khaled Alenazi, Haitham Alahmad, Salman Albeshan, Meshari Almeshari, Ahmad Abanomy

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引用次数: 0

Abstract

CT KUB (kidneys, ureters, bladder) is the gold standard for evaluating urinary disorders. Known for its diagnostic accuracy, CT KUB is crucial for detecting renal stones. However, high radiation doses require accurate dose estimation methods to ensure safety and effectiveness in clinical practice. This study evaluates and studies the correlation in size-specific dose estimates (SSDE) for CT KUB based on effective (Deff) and water-equivalent (Dw) diameters. SSDE values based on Deff and Dw were calculated for 254 patients who underwent CT KUB examinations using IndoseCT software. Patients were categorized into three groups based on body size diameters: <30, 30–35, and >35 cm. The average SSDE values for Deff and Dw were determined, and their correlation was analyzed using linear regression. The mean SSDEeff and SSDEw were 10.47 mGy and 10.55 mGy, respectively. As body size increased, CTDIvol and DLP values rose by 1.6 and 1.5 times, respectively, from thinner to thicker patients. A strong positive correlation between Deff and Dw (R2 = 0.9567) was observed, with minimal differences between average values of SSDEeff and SSDEw. These findings suggest that water-equivalent and effective diameters are comparable for CT KUB scans, allowing clinicians to use either metric for radiation dose estimation. CTDIvol significantly underestimates radiation dose in smaller patients, emphasizing the importance of using SSDEeff or SSDEw for accurate dose assessment.

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. 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. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.