Demczuk P, Jankowski J
Oddziału Ochrony Radiologicznej, Wojewódzkiej Stacji Sanitarno-Epidemiologicznej we Wrocławiu.
Med Pr. 1998;49(2):167-75.
A theoretical method for evaluating effective doses (mSv) received by patients during selected X-ray diagnostic examinations is presented. The measurements of exposure doses (mGy) performed in 35 radiological and diagnostic units, randomly selected in the city of Wrocław and in the Wrocław voivodship, were taken as the basis for calculations. Effective doses (mSv) were reckoned using conversion coefficients whose values were read from the tables given in another paper (3). The results obtained were compared with similar studies carried out in Poland, UK and Finland as well as with recommended values. The comparison between measured and recommended doses indicated that in the Wrocław voivodship doses received during X-ray examinations with defined conversion coefficients were generally lower than those recommended. The only exception were doses received by patients during X-ray chest examinations with the difference of 64% against recommended doses. It is significant in this respect that chest X-ray examinations constitute a considerable proportion of all kinds of examinations taken among patients in this region (136 of the total 608 examinations in 1995-22.4% (1). The mean value of the effective dose received by patients during diagnostic X-ray examination in the Wrocław voivodship did not exceed 1 mSv.
本文提出了一种评估患者在特定X射线诊断检查过程中所接受有效剂量（毫希沃特）的理论方法。以在弗罗茨瓦夫市和弗罗茨瓦夫省随机选取的35个放射和诊断单位所进行的照射剂量（毫戈瑞）测量结果作为计算依据。有效剂量（毫希沃特）通过转换系数来计算，其数值取自另一篇论文（3）中的表格。将所得结果与在波兰、英国和芬兰开展的类似研究以及推荐值进行了比较。测量剂量与推荐剂量之间的比较表明，在弗罗茨瓦夫省，采用特定转换系数的X射线检查过程中患者所接受的剂量总体上低于推荐剂量。唯一的例外是患者在胸部X射线检查中所接受的剂量，与推荐剂量相比高出64%。在这方面值得注意的是，胸部X射线检查在该地区患者所接受的各类检查中占相当大的比例（1995年在总共608例检查中有136例——占22.4%（1））。弗罗茨瓦夫省患者在诊断性X射线检查过程中所接受有效剂量的平均值未超过1毫希沃特。
