Evaluation of effective doses received by patients, during selected types of diagnostic radiation, in Wrocław
Demczuk, P.; Jankowski, J.
Medycyna Pracy 49(2): 167-175
1998
ISSN/ISBN: 0465-5893 PMID: 9695064 Document Number: 492486
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.