Vlachos Ioannis, Tsantilas Xenophon, Kalyvas Nektarios, Delis Harry, Kandarakis Ioannis, Panayiotakis George
Department of Medical Physics, School of Medicine, University of Patras, Patras 26500, Greece.
Department of Radiology, Sismanoglio General Hospital of Athens, Athens 15126, Greece.
Radiat Prot Dosimetry. 2015 Jul;165(1-4):382-5. doi: 10.1093/rpd/ncv093. Epub 2015 Apr 24.
During the last decades, radiation protection and dosimetry in medical X-ray imaging practice has been extensively studied. The purpose of this study was to measure secondary radiation in a conventional radiographic room, in terms of ambient dose rate equivalent H*(10) and its dependence on the radiographic exposure parameters such as X-ray tube voltage, tube current and distance. With some exceptions, the results indicated that the scattered radiation was uniform in the space around the water cylindrical phantom. The results also showed that the tube voltage and filtration affect the dose rate due to the scatter radiation. Finally, the scattered X-ray energy distribution was experimentally calculated.
在过去几十年中，医学X射线成像实践中的辐射防护和剂量测定得到了广泛研究。本研究的目的是在传统X射线摄影室中，测量周围剂量当量率H*(10)形式的二次辐射及其对诸如X射线管电压、管电流和距离等X射线摄影曝光参数的依赖性。除了一些例外情况，结果表明在水圆柱形模体周围空间中散射辐射是均匀的。结果还表明，管电压和滤过会影响散射辐射产生的剂量率。最后，通过实验计算了散射X射线的能量分布。
