应用模体测量儿童脉管性疾病介入术患者剂量  

Application of phantom for dose measurement in interventional therapy for pediatric vascular anomalies

作　　者：徐建宇 陈英民[1] 陈睿[1] 马娅[1] 王小山 卢俊男 XU Jianyu;CHEN Yingmin;CHEN Rui;MA Ya;WANG Xiaoshan;LU Junnan(Institute of Radiation Medicine,Shandong First Medical University&Shandong Academy of Medical Sciences,Jinan 250062 China;Children's Hospital affiliated to Shandong University,Jinan 250062 China)

机构地区：[1]山东省医学科学院放射医学研究所,山东第一医科大学(山东省医学科学院),山东济南250062 [2]山东大学附属儿童医院,山东济南250062

出　　处：《中国辐射卫生》2023年第2期131-136,共6页Chinese Journal of Radiological Health

基　　金：山东省自然科学基金(ZR2017YL006);山东第一医科大学(山东省医学科学院)青年科学基金培育资助计划(202201-001);山东省医药卫生科技发展计划(202012070680)。

摘　　要：目的 应用模体测量儿童脉管性疾病介入术患者的剂量,计算有效剂量(E)和剂量面积乘积(DAP)到E的转换系数,为研究儿童受照剂量和辐射防护提供剂量参考水平。方法 将TLD放于模体器官中,按透视时间将3种脉管性疾病均分为低中高剂量组,使用数字减影-血管造影(DSA)模拟不同剂量水平的曝光条件,测量器官剂量,并计算有效剂量。结果 3组头面部脉管性疾病红骨髓剂量分别为8.15、30.34、43.53 mGy;有效剂量分别为12.88、47.84、73.12 mSv;DAP到E的转换系数平均为2.16。3组躯干脉管性疾病红骨髓剂量分别为2.11、15.62、31.21 mGy;有效剂量分别为12.39、70.56、134.60 mSv;DAP到E的转换系数平均为3.03。3组下肢脉管性疾病红骨髓剂量分别为3.58、6.50、12.28 mGy;有效剂量分别为3.64、7.04、14.85 mSv;DAP到E的转换系数平均为0.73。结论 患者剂量和DAP到E的转换系数由大到小为:躯干脉管性疾病>头面部脉管性疾病>下肢脉管性疾病。所得的剂量数据可估计患儿的辐射暴露。Objective To apply a phantom for dose measurement in interventional therapy for pediatric vascular diseases,and calculate the effective dose(E)and conversion coefficient of dose area product(DAP)to E,and to provide a dose reference for studying radiation dose and radiation protection in children.Methods Thermoluminescent dosimeters were placed in the organs of the phantom.Low-,medium-,and high-dose groups were set for three types of vascular anomalies based on the duration of fluoroscopy.Digital subtraction angiography was used to simulate exposure conditions at different dose levels.The organ dose was measured,and the effective dose was calculated.Results For the three groups of vascular anomalies in the head and face,the red bone marrow doses were 8.15,30.34,and 43.53 mGy,respectively,the effective doses were 12.88,47.84,and 73.12 mSv,respectively;and the average conversion coefficient of DAP to E was 2.16.For the three groups of vascular anomalies in the trunk,the red bone marrow doses were 2.11,15.62,and 31.21 mGy,respectively;the effective doses were 12.39,70.56,and 134.60 mSv,respectively,and the average conversion coefficient of DAP to E was 3.03.For the three groups of vascular anomalies in the lower extremities,the red bone marrow doses were 3.58,6.50,and 12.28 mGy,respectively,the effective doses were 3.64,7.04,and 14.85 mSv,respectively,and the average conversion coefficient of DAP to E was 0.73.Conclusion Patient dose and DAP-to-E conversion coefficient are in the following order:vascular anomalies in the trunk>vascular anomalies in the head and face>vascular anomalies in the lower extremities.The dose data obtained can be used to estimate children’s radiation exposure.

关 键 词：儿童脉管性疾病 儿童仿真模体 介入 剂量面积乘积 器官剂量 有效剂量 

分 类 号：X591[环境科学与工程—环境工程]