Compagnone G, Baleni M Casadio, Pagan L, Calzolaio F L, Barozzi L, Bergamini C
Medical Physics Department, S. Orsola-Malpighi Hospital, Via Massarenti 9, 40138 Bologna, Italy.
Br J Radiol. 2006 Nov;79(947):899-904. doi: 10.1259/bjr/57138583.
New flat-panel direct digital radiography equipment has recently been installed in our Accident and Emergency Department; its characteristics and versatility are well suited to the work undertaken in this environment. The aim of this study was to compare radiation doses to patients undergoing standard radiographic examinations using conventional screen-film radiography, computed radiography and direct digital radiography; entrance surface dose and effective dose were calculated for six standard examinations (a total of 10 projections) using standard patient exposure parameters for the three imaging modalities. It was found that doses for computed radiography (all examinations) were higher than the doses for the other two modalities; effective doses for direct digital radiography were approximately 29% and approximately 43% lower than those for screen-film radiography and computed radiography, respectively. The image quality met the criteria in the European guidelines for all modalities.
我们的急诊科最近安装了新型平板直接数字化放射摄影设备；其特性和多功能性非常适合在这种环境下开展的工作。本研究的目的是比较接受标准X线摄影检查的患者分别使用传统屏-片摄影、计算机X线摄影和直接数字化X线摄影时所接受的辐射剂量；使用这三种成像方式的标准患者曝光参数，计算了六项标准检查（共10个投照位）的体表入射剂量和有效剂量。结果发现，计算机X线摄影（所有检查）的剂量高于其他两种方式；直接数字化X线摄影的有效剂量分别比屏-片摄影和计算机X线摄影低约29%和约43%。所有成像方式的图像质量均符合欧洲指南中的标准。
