DR摄影参数对患者辐射剂量的影响  

DR Photography Parameters on the Effect of Patient Radiation Dose

作　　者：许传虓[1] 陈双庆[1] 蔡庆[1] 

机构地区：[1]南京医科大学附属苏州医院放射科,江苏苏州215001

出　　处：《现代医用影像学》2011年第3期179-181,共3页Modern Medical Imageology

摘　　要：目的:研究DR摄影中KV和滤过板的合理选择对患者辐射剂量的影响。材料与方法:选用胸片摄片自动曝光控制(AEC)模式。当滤过板为固定2.7mm铝当量和可变的0.1mm,0.2mm,0.3mm铜时,管电压(kv)分别从50kv开始,每增加10kv曝光一次,直至150kv。每次曝光后记录体模的入射剂量并将图像传递至PACS工作站,由质控小组成员分别对显示器上的测试卡图像仔细处理,阅读后打分,最高10分,最低0分。结果:所有测试卡图像在显示器上都能阅读。综合胸部摄片条件,以2mm铜滤过板90kv为佳。Purpose ： To evaluate the effect of different kv parameters and filtration board for the radiation dose of patients in DR photography. Materials and Methods： Chest radiography of pkantom was undergone with automatic exposure control （AEC） mode. Parameters of filtration board were designed for fixed 2. 7 mm aluminum equivalent and variable 0. 1 mm, 0. 2 mm, O. 3 mm copper equivalent, while tube voltage ranging from 50kv to 150kv and every increase consumers lOkv exposure once. X - ray dose of body mold was recorded and all images were transmitted to PACS and evaluated by QC team members respectively in a double - blinded manner. Results： All test card images were successfully performed on the monitor. According to chest radiography condition, parameter in 90kv and 2ram copper filtration board are optimal.

关 键 词：直接数字平板X线成像系统 管电压 滤过板 辐射 

分 类 号：R144[医药卫生—公共卫生与预防医学] R816.7