体位对3~4岁儿童胸部数字X线摄影辐射剂量与图像质量的影响  

Impact of positions on radiation dose and imaging quality of chest digital radiography of 3-4 years old children

作　　者：许宏荣 刘波[1] 蔡金华[1] 郑欢 杨秋瑞 姚昌洪 XU Hongrong;LIU Bo;CAI Jinhua;ZHENG Huan;YANG Qiurui;YAO Changhong(Department of Radiology, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China)

机构地区：[1]重庆医科大学附属儿童医院放射科,儿童发育疾病研究教育部重点实验室,国家儿童健康与疾病临床医学研究中心,儿童发育重大疾病国家国际科技合作基地,儿科学重庆市重点实验室,重庆400014

出　　处：《中国介入影像与治疗学》2021年第6期350-353,共4页Chinese Journal of Interventional Imaging and Therapy

基　　金：重庆市技术创新与应用发展专项面上项目(cstc2019jscx-msxmX0162)。

摘　　要：目的观察不同体位对3~4岁儿童胸部数字X线摄影(DR)辐射剂量与图像质量的影响。方法将120例3~4岁患儿均分为仰卧前后位组(A组)、站立前后位组(B组)及站立后前位组(C组)各40例,行胸部DR检查;记录剂量面积乘积(DAP)和体表入射剂量(ESD),以视觉分级分析评分(VGAS)评价图像质量。结果C组与B组DAP和ESD显著低于A组(P均<0.05);B组VGAS显著低于C组和A组(P均<0.05);而C组肺野面积显著大于B组和A组(P均<0.05)。结论对3~4岁儿童行胸部DR检查时,体位对图像质量及辐射剂量存在一定影响;宜依序选择站立后前位、仰卧前后位及站立前后位。Objective To observe the impact of photographic positions on radiation dose and imaging quality of chest digital radiography(DR)of 3-4 years old children.Methods Totally 120 children aged 3-4 years who underwent chest DR were included.The children were equally divided into supine anterior-posterior position(APP)group(group A),standing APP group(group B)and standing posterior-anterior position(PAP)group(group C),respectively(each n=40).The dose area product(DAP)and entrance surface dose(ESD)were recorded,and the imaging qualities were evaluated using visual grading analysis score(VGAS).Results DAP and ESD in group C and B were significantly lower than those in group A(all P<0.05).Meanwhile,VGAS in group B was significantly lower than that in group A and C(both P<0.05),whereas the area of pulmonary field in group C was significantly larger than that in group B and A(both P<0.05).Conclusion Photographic positions had curtain impact on radiation dose and imaging quality of chest DR of 3-4 years old children.Standing PAP should be the first choice,then supine APP,and the last standing APP.

关 键 词：X线影像增强 儿童 胸部 辐射剂量 

分 类 号：R811.5[医药卫生—放射医学] R812[医药卫生—临床医学]