The effect of pediatric chest CT examinations on lens exposure: a Monte Carlo simulation study.

IF 1.5 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Radiological Physics and Technology Pub Date : 2025-09-29 DOI:10.1007/s12194-025-00971-6

Takanori Masuda, Yasushi Katsunuma, Masao Kiguchi, Chikako Fujioka, Takayuki Oku, Toru Ishibashi, Takayasu Yoshitake, Shuji Abe, Kazuo Awai

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Abstract

The aim of the study was to evaluate the degree of error between Monte Carlo simulations of pediatric lens dose outside the scan range and measured values obtained with a dosimeter. Two types of computed tomography (CT) equipment and three pediatric anthropomorphic phantoms were used, each with a nanoDot optically stimulated luminescence dosimeter (nanoDot OSLD; Landauer, Inc., Glenwood, IL, USA) mounted on its left and right lenses. The scatter dose measurements obtained from the nanoDot were compared with those predicted by the particle and heavy ion transport code system, which served as a Monte Carlo simulation tool during pediatric chest CT examinations. The error rate between the mean measured dose and the simulated dose was within 1.5% for Aquilion Genesis and within 8.0% for Revolution. We evaluated the degree of error between Monte Carlo simulations of pediatric lens dose outside the scan range and measured values obtained with a dosimeter. The Monte Carlo simulations tended to underestimate the error.

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儿童胸部CT检查对晶状体暴露的影响：蒙特卡罗模拟研究。

本研究的目的是评估蒙特卡罗模拟的儿童晶状体在扫描范围外的剂量与剂量计测量值之间的误差程度。使用了两种类型的计算机断层扫描（CT）设备和三个儿童仿人模型，每一个都在其左右透镜上安装了一个nanoDot光刺激发光剂量计（nanoDot OSLD; Landauer, Inc., Glenwood， IL， USA）。将nanoDot获得的散射剂量测量值与粒子和重离子传输编码系统预测的剂量进行比较，该系统在儿童胸部CT检查中作为蒙特卡罗模拟工具。Aquilion Genesis的平均测量剂量与模拟剂量的误差率在1.5%以内，Revolution的误差率在8.0%以内。我们评估了扫描范围外儿童晶状体剂量的蒙特卡罗模拟与剂量计测量值之间的误差程度。蒙特卡罗模拟往往低估了误差。

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

Radiological Physics and Technology RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-

CiteScore

3.00

自引率

12.50%

发文量

期刊介绍： The purpose of the journal Radiological Physics and Technology is to provide a forum for sharing new knowledge related to research and development in radiological science and technology, including medical physics and radiological technology in diagnostic radiology, nuclear medicine, and radiation therapy among many other radiological disciplines, as well as to contribute to progress and improvement in medical practice and patient health care.