ABSTRACT

In this work, a mathematical model for estimating the tube output for Three-phase x-ray machines is proposed. A total number of three x-ray machines are used. The output of each x-ray machine was measured using a Diavolt. During measurements, three types of data were collected: the filtration, the fixed kV, and the charge (mAs). Based on the survey data, a mathematical model for estimating the x-ray tube output is deduced. A comparison between the measured and the estimated output shows that the difference between both is quite small (mainly below 6%, the maximum being 14%). The model is also tested on a dataset published by RadyAzzoz et al. and results also show a slight difference between the measured and estimated values (3% at 80kV). Finally, the results show that the model derived in this work performed better than Kothan and Tungjai’s model. This model could be an alternative method for estimating the output and therefore the radiation doses received by patients during diagnostic x-ray examinations, particularly in the case of non-availability of dosimeters.

摘要

在这项工作中，提出了用于估计三相X射线机的管输出的数学模型。总共使用了三台X射线机。使用Diavolt测量每个X射线机的输出。在测量期间，收集了三种类型的数据：过滤，固定kV和电荷（mAs）。基于调查数据，推导出用于估计X射线管输出的数学模型。实测输出与估算输出之间的比较表明，两者之间的差异非常小（主要在6％以下，最大为14％）。该模型还在RadyAzzoz等人发布的数据集上进行了测试。结果还显示，实测值与估计值之间存在细微差异（80kV时为3％）。最后，结果表明，这项工作得出的模型比Kothan和Tungjai的模型表现更好。