Many children need several recurrent x-ray examinations during their treatment that may accumulate to a remarkable radiation dose. Universityhospitals should pay special attention to the quality of examinations and to radiation exposure doses. Using the dose area product measuring the DAP-meter must be sensitive enough for paediatric X-ray examinations. The obtained doses give a great starting point to determine the national reference values for paediatric thorax examinations. The results show that with careful optimising of image quality and other dose-sensitive factors the radiation dose can be considerably reduced in paediatric examinations.
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