Introduction: Exposure conditions and their proper selection are very important for the quality of exposure. Exposure conditions are voltage, anode current and exposure time. In case the radiological engineer decides to modify the exposure conditions, he needs to know, that this change will impact the image quality and dose load of the patient. Purpose: The purpose of the graduation thesis was to present the exposure conditions in clinical practice and compare them with international recommendations. With the help of a survey, I tried to identify the differences between exposure conditions in different health care institutions and compare the exposure parameters with international recommendations. Methods: The graduation thesis was written using the descriptive and research method. The descriptive method consisted of the review of foreign and domestic literature. The research method consisted of the preparation of the survey questionnaire, which included questions about exposure conditions, used by health care institutions in practice. Results: The survey questionnaire was sent to 21 health care institutions in Slovenia. It was completed by 10 health care institutions, which represent 48% of all health care institutions. In case of head imaging in AP/PA, appropriate focal size is used by 56% of the questioned health care institutions. In case of upper limb imaging, health care institutions follow the recommended values of acceleration voltages in 65%. International recommendations regarding proper usage of acceleration voltages are the least followed in AP and side imaging of the shin. International recommendations state that AP and side imaging of the upper arm are performed with automatic exposure control. This means that 30 % of health care institutions use electronic exposure control for this type of x-ray imaging. Discussion and conclusion: In central Slovenia, where they use slower acceleration voltages compared to the other two regions, there will be greater dose load and better contrast resolution of the radiograph by performing the same imaging. More than half of health care institutions use acceleration voltages, which are in compliance with international recommendations. Health care institutions, which do not comply with international recommendations for voltage, mostly use lower values than recommended. Because of the use of lower energies, this x-ray imaging shows better contrast quality of the image and higher dose load of the patients. In the appropriate selection of exposure duration control according to international recommendations, the majority of health care institutions complies with this recommendation.
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