胸部PA位数字X射线摄影受检者入射体表空气比释动能及影响因素分析

辐射防护 ›› 2024, Vol. 44 ›› Issue (6): 705-710.

胸部PA位数字X射线摄影受检者入射体表空气比释动能及影响因素分析

沈水珍¹, 张磊², 王强², 周宏杰², 赵徵鑫², 杨勇², 景丽艳², 杨陆婷²

1.浙江大学医学院附属邵逸夫医院,杭州 310016;
2.杭州市职业病防治院放射卫生科,杭州 310014

收稿日期:2024-09-26 发布日期:2025-01-06
通讯作者: 张磊。E-mail:719453275@qq.com
作者简介:沈水珍(1971—),女,2002年6月毕业于杭州广播电视大学计算机科学与技术专业,2009年6月毕业于西南交通大学工商管理专业,获硕士学位,高级工程师。E-mail:13588819129@139.com
基金资助:
浙江省医药卫生科技计划项目(2022KY1043)。

Analysis on the entrance surface air kerma and influencing factors for subjects undergoing posteroanterior (PA) chest digital radiography

SHEN Shuizhen¹, ZHANG Lei², WANG Qiang², ZHOU Hongjie², ZHAO Zhixin², YANG Yong², JING Liyan², YANG Luting²

1. Sir Run Run Shaw Hospital, Affiliated to Zhejiang University School of Medicine, Hangzhou 310016;
2. Department of Radiological Health, Hangzhou Hospital for Prevention and Treatment of Occupational Disease, Hangzhou 310014

Received:2024-09-26 Published:2025-01-06

摘要/Abstract

摘要： 分析受检者接受胸部后前位(PA位)数字X射线摄影(DR)的入射体表空气比释动能(K_a,e)及其影响因素,探讨合理的控制措施。选择杭州市有代表性的19家监测点医疗机构的22台DR机,利用热释光探测器测量1 055例接受胸部PA位DR摄影受检者的K_a,e;采用秩和检验方法分析不同年龄组受检者K_a,e的差异;采用Kruskal-Wallis检验方法分析不同等级医疗机构和不同厂商设备的K_a,e差异。结果显示,三级医院同年龄组摄影所致受检者的K_a,e低于其他级别医疗机构(H=93.280, P<0.05);进口DR机摄影所致受检者的K_a,e明显低于国产DR机(H=145.373, P<0.05);不同年龄组受检者K_a,e存在差异(H=68.667, P<0.05);本地胸部PA位DR摄影所致2~≤5岁、＞5~≤10岁、＞10~≤15岁、>15岁(成人)4个年龄组受检者诊断参考水平DRL分别为140.74 μGy、148.52 μGy、169.52 μGy、216.89 μGy,有必要建立不同年龄段受检者的DRL;杭州市胸部PA位DR摄影所致成人受检者DRL虽然已低于国家标准的推荐值,但仍有进一步下降的空间。

关键词: 数字X射线摄影, 受检者, 入射体表空气比释动能, 诊断参考水平

Abstract: To analyze the Entrance surface air kerma (K_a,e) and its influencing factors for subjects undergoing posteroanterior (PA) chest digital radiography (DR), and to explore reasonable control measures, 22 DR machines from 19 representative monitoring points in medical institutions in Hangzhou were selected as the research cohort. The K_a,e of 1 055 patients undergoing chest DR (PA position) was measured using thermoluminescent dosimeters. The rank sum test method was used to analyze the differences in K_a,e among subjects of different age groups. The Kruskal-Wallis test method was used to analyze the differences in K_a,e between medical institutions of different levels and equipment from different manufacturers.The results showed that the K_a,e of subjects in the same age group who underwent photography in top tier hospitals were lower than those in other medical institutions (H=93.280, P<0.05); The K_a,e of subjects detected by imported DR machines was significantly lower than that of domestic DR machines (H=145.373, P<0.05); There were differences in K_a,e among subjects of different age groups (H=68.667, P<0.05); The DRL for subjects in Hangzhou undergoing chest DR for the age groups 2-5, 6-10, 11-15, and over 15 years was 140.74 μGy,148.52 μGy,169.52 μGy,216.89 μGy, respectively, and it is necessary to establish DRL for subjects of different age groups. Although the DRL of adult subjects undergoing chest DR (PA position) in Hangzhou is lower than the recommended value of the national standard, there is still room for further improvement.

Key words: digital radiography, subject, entrance surface air kerma, diagnostic reference levels

中图分类号:

TL72

沈水珍, 张磊, 王强, 周宏杰, 赵徵鑫, 杨勇, 景丽艳, 杨陆婷. 胸部PA位数字X射线摄影受检者入射体表空气比释动能及影响因素分析[J]. 辐射防护, 2024, 44(6): 705-710.

SHEN Shuizhen, ZHANG Lei, WANG Qiang, ZHOU Hongjie, ZHAO Zhixin, YANG Yong, JING Liyan, YANG Luting. Analysis on the entrance surface air kerma and influencing factors for subjects undergoing posteroanterior (PA) chest digital radiography[J]. RADIATION PROTECTION, 2024, 44(6): 705-710.

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