不同厚度铜附加滤过在骨骼数字化X线摄影中的应用  

Application of copper additional filtration with different thicknesses in skeleton digital radiograph

作　　者：王世杰 吴慧钊[1] 张信起[2] 陈昕怡 杜坤隆 孙泽宇 WANG Shi-jie;WU Hui-zhao;ZHANG Xin-qi;CHEN Xin-yi;DU Kun-long;SUN Ze-yu(Department of Radiology,the Third Hospital of Hebei Medical University,Shijiazhuang 050051,China;Department of Medical Imagine,the Second Hospital of Hebei Medical University,Shijiazhuang 050000,China)

机构地区：[1]河北医科大学第三医院放射科,河北石家庄050051 [2]河北医科大学第二医院医学影像科,河北石家庄050000

出　　处：《河北医科大学学报》2020年第1期77-80,共4页Journal of Hebei Medical University

基　　金：河北省医学科学研究重点课题(20160146);河北医科大学大学生创新性实验计划项目(USIP2018045)

摘　　要：目的探讨不同厚度铜附加滤过在骨骼数字化X线摄影(digital radiograph,DR)中的应用价值。方法对人体等效体模进行头颅、脊柱、骨盆、四肢等部位的DR检查,其中头颅、脊柱、骨盆等厚部位应用电离室自动曝光控制(automatic exposure control,AEC)系统为AEC组,四肢、关节等不使用AEC的薄部位检查为非AEC组。选择无附加滤过、0.1 mm、0.2 mm、0.3 mm不同厚度铜附加滤过进行曝光。比较不同厚度铜附加滤过检查的表面入射剂量值、图像质量评分值以及管电流量值。结果非AEC组4种不同厚度铜附加滤过表面入射剂量差异有统计学意义,经两两比较,无附加滤过时表面入射剂量大于0.1 mm、0.2 mm、0.3 mm铜附加滤过时,0.1 mm铜附加滤过时表面入射剂量大于0.3 mm铜附加滤过时,差异有统计学意义(P<0.05);非AEC组4种不同厚度铜附加滤过的图像质量评分值、管电流量差异无统计学意义(P>0.05)。AEC组4种不同厚度铜附加滤过时表面入射剂量和管电流量差异有统计学意义,经两两比较,无附加滤过时表面入射剂量大于0.3 mm铜附加滤过时,管电流量小于0.3 mm铜附加滤过时,差异有统计学意义(P<0.05)。AEC组4种不同厚度铜附加滤过的图像质量评分值差异无统计学意义(P>0.05)。结论铜附加滤过可以在保证诊断质量的前提下有效降低骨骼系统DR的检查剂量,实现骨骼系统DR的低剂量检查。Objective To investigate the application value of copper additional filtration with different thickness in bone digital radiography(DR).Methods The equivalent phantom of the human body was used for bone DR.The thick parts such as head,spine and pelvis were examined as automatic exposure control(AEC)group by AEC system using the ionization chamber.The thin parts such as limbs and joints without AEC were examined as non-AEC group.The copper additional filters with different thickness of 0.1 mm,0.2 mm and 0.3 mm were selected for exposure.The surface incident dose,imaging quality score and tube current of different thickness copper additional filter groups were compared.Results There were significant differences in the surface incident dose of four different thickness copper additional filters in non-AEC group.By pairwise comparison,the surface incident dose without additional filtration was greater than 0.1 mm,0.2 mm and 0.3 mm copper additional filtration respectively,while the surface incident dose of 0.1 mm copper additional filtration was greater than 0.3 mm copper additional filtration,with statistically significant difference(P<0.05).In non-AEC group,there were no significant differences in imaging quality scores and tube current of four different thickness copper additional filters(P>0.05).There were significant differences in the surface incident dose and the tube current of four different thickness copper additional filters in AEC group.By pairwise comparison,the surface incident dose without additional filtration was greater than 0.3 mm copper additional filtration,while the tube current was less than 0.3 mm copper additional filtration,the difference was statistically significant(P<0.05).In AEC group,there were no significant differences in imaging quality scores of four different thickness copper additional filters(P>0.05).Conclusion The copper additional filtration can reduce the examination dose of skeletal system DR effectively on the premise of ensuring the diagnostic quality,and achieve low-dose ra

关 键 词：骨骼 放射摄影术 附加滤过 辐射剂量 

分 类 号：R336[医药卫生—人体生理学] R814.44[医药卫生—基础医学]