Radiation dose assessment on the i-CAT Cone Beam Computed Tomography (CBCT) scanner

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

Radiation Physics and Chemistry Pub Date : 2025-09-05 DOI:10.1016/j.radphyschem.2025.113291

Jaber H. Alsalah Alyami , M.H. Nassef , Fahad F. Almutairi , Hanadi M. Khalifa

{"title":"Radiation dose assessment on the i-CAT Cone Beam Computed Tomography (CBCT) scanner","authors":"Jaber H. Alsalah Alyami , M.H. Nassef , Fahad F. Almutairi , Hanadi M. Khalifa","doi":"10.1016/j.radphyschem.2025.113291","DOIUrl":null,"url":null,"abstract":"<div><h3>Objective</h3><div>The aim of this study was to assess radiation doses to surrounding organs from i-CAT Cone Beam Computed Tomography (CBCT) used in dental imaging and compare protocols with other similar clinical purpose by means of effective dose value. The radiation levels during the examination protocols inside the facility were also determined for protection purposes.</div></div><div><h3>Materials and methods</h3><div>The measured dose-area product (DAP) in mGycm<sup>2</sup> was used to assess the effective dose in microsievert (μSv) and a correction factor. The dose to the organ was measured using a type 100 thermoluminescent dosimeter, specifically LiF (Lithium Fluoride) TLDs Thermo Electron Corporation (TLD-100) and an adult anthropomorphic head and neck RANDO male phantom.</div><div>Measurements of dose area product in every protocol were performed using a dose area product meter coupled to a transmission ionization chamber. The measured DAP in mGycm<sup>2</sup> was used to assess the effective dose in microsievert (μSv) and a correction factor. The radiation doses to surrounding organs from i-CAT CBCT were also determined with TLD-100 inserted in the position of organs/tissues of an adult male anthropomorphic head and neck RANDO male phantom.</div></div><div><h3>Results</h3><div>The estimated value of the DAP ranged from 136.9 to 782.2 mGycm<sup>2</sup> with an average value of 337.8 mGycm<sup>2</sup> and was found to be low compared with the published data in the literature. At different fields of view and voxel sizes, the effective dose ranged between 25.44 and 145.33 μSv. The head and neck's radio-sensitive organs received doses ranging from 0.022 to 1.07 mGy. The radiation level ranged from 0.233 to 1.045 μSv/hr. with an average value of 0.622μSv/hr and was found to be less than the daily limit of 10μSv/hr. All the measured doses were compared with the available data published in the literature.</div></div><div><h3>Conclusions</h3><div>In cone beam CT scanners, the DAP, and the effective dose are simple and faster techniques to measure the patient dose. The voxel size parameters and field of view (FOV) considerably impact effective radiation dose. It is important to optimize the exposure parameters during CBCT scans to reduce the radiation risk to patients.</div><div>The occupational exposure in the supervised area of the CBCT scanner facility did not exceed the annual dose limit of 20mSv/year. The KAU Dental Hospital's radiation protection program was effective because it followed the national guidelines that have been widely accepted.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"239 ","pages":"Article 113291"},"PeriodicalIF":2.8000,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiation Physics and Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0969806X25007832","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Objective

The aim of this study was to assess radiation doses to surrounding organs from i-CAT Cone Beam Computed Tomography (CBCT) used in dental imaging and compare protocols with other similar clinical purpose by means of effective dose value. The radiation levels during the examination protocols inside the facility were also determined for protection purposes.

Materials and methods

The measured dose-area product (DAP) in mGycm² was used to assess the effective dose in microsievert (μSv) and a correction factor. The dose to the organ was measured using a type 100 thermoluminescent dosimeter, specifically LiF (Lithium Fluoride) TLDs Thermo Electron Corporation (TLD-100) and an adult anthropomorphic head and neck RANDO male phantom.

Measurements of dose area product in every protocol were performed using a dose area product meter coupled to a transmission ionization chamber. The measured DAP in mGycm² was used to assess the effective dose in microsievert (μSv) and a correction factor. The radiation doses to surrounding organs from i-CAT CBCT were also determined with TLD-100 inserted in the position of organs/tissues of an adult male anthropomorphic head and neck RANDO male phantom.

Results

The estimated value of the DAP ranged from 136.9 to 782.2 mGycm² with an average value of 337.8 mGycm² and was found to be low compared with the published data in the literature. At different fields of view and voxel sizes, the effective dose ranged between 25.44 and 145.33 μSv. The head and neck's radio-sensitive organs received doses ranging from 0.022 to 1.07 mGy. The radiation level ranged from 0.233 to 1.045 μSv/hr. with an average value of 0.622μSv/hr and was found to be less than the daily limit of 10μSv/hr. All the measured doses were compared with the available data published in the literature.

Conclusions

In cone beam CT scanners, the DAP, and the effective dose are simple and faster techniques to measure the patient dose. The voxel size parameters and field of view (FOV) considerably impact effective radiation dose. It is important to optimize the exposure parameters during CBCT scans to reduce the radiation risk to patients.

The occupational exposure in the supervised area of the CBCT scanner facility did not exceed the annual dose limit of 20mSv/year. The KAU Dental Hospital's radiation protection program was effective because it followed the national guidelines that have been widely accepted.

查看原文本刊更多论文

i-CAT锥束计算机断层扫描（CBCT）扫描仪的辐射剂量评估

目的评估i-CAT锥形束ct （Cone Beam Computed Tomography， CBCT）在口腔成像中对周围器官的辐射剂量，并通过有效剂量值与其他类似临床目的的方案进行比较。为了保护目的，还确定了设施内检查规程期间的辐射水平。材料与方法采用mGycm2中测定的剂量面积积（DAP）评价微西弗（μSv）有效剂量及修正系数。对器官的剂量使用100型热释光剂量计测量，特别是LiF（氟化锂）tld热电子公司（TLD-100）和成人拟人化头部和颈部RANDO男性幻影。每个方案的剂量面积积测量都是使用与透射电离室耦合的剂量面积积计进行的。用mGycm2中测定的DAP来评估微西弗（μSv）有效剂量和校正因子。将TLD-100植入成年男性拟人头部和颈部RANDO男性幻体的器官/组织位置，测定i-CAT CBCT对周围器官的辐射剂量。结果DAP的估计值在136.9 ~ 782.2 mGycm2之间，平均值为337.8 mGycm2，与已发表的文献数据相比，DAP的估计值偏低。在不同视场和体素大小下，有效剂量范围为25.44 ~ 145.33 μSv。头部和颈部的辐射敏感器官接受的剂量从0.022至1.07毫戈瑞不等。辐射水平范围为0.233 ~ 1.045 μSv/hr。平均值为0.622μSv/hr，低于10μSv/hr的日限值。所有测量的剂量都与文献中发表的现有数据进行了比较。结论锥束CT扫描仪、DAP和有效剂量是测量患者剂量的简单、快速的技术。体素尺寸参数和视场对有效辐射剂量有较大影响。因此，优化CBCT扫描过程中的暴露参数，降低患者的辐射风险具有重要意义。CBCT扫描仪设施监管区域的职业暴露未超过20mSv/年的年剂量限值。九龙牙科医院的辐射防护计划是有效的，因为它遵循了已被广泛接受的国家指导方针。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.