Introduction: Ultrasound is primarily a non-invasive diagnostic technique that is of crucial importance in today's diagnostics due to the speed of the examination and its safety. It is a form of electromagnetic radiation in which high-frequency sound waves are used to visualize internal body structures. In addition to diagnostics, it is also used for therapeutic purposes, e.g. in lithotripsy. Although ultrasound is the most commonly used imaging technique, the role of radiographers in this field is limited in Slovenia and Europe as a whole. Purpose: The aim is to describe the physical principles of ultrasound and the work of radiographers in this field in Europe and Slovenia and to determine whether students with additional training are more accurate in ultrasound measurements of the kidneys than those without the same training and how the results of both groups compare with the measurements of an experienced practitioner. Methods: We used a descriptive method to describe the physical basis of ultrasound, its applications, and the role of radiographers in the field of ultrasonography. In a cross-sectional study, we enrolled 36 third-year radiography students and divided them into two groups - those who attended the elective course in the fundamentals of ultrasonography (21) and those who did not (15). Prior to the study in which we compared the ultrasound measurements of these groups, we obtained permission from the dean to conduct it on the premises of the Faculty of Health Sciences. Each student signed a consent form to participate in the study and to publish the anonymous results. They were also given basic information about the work and the ultrasound examination of the kidney before the measurements were taken. Results: When we statistically analyzed 42 measurements, we found that none of the groups' measurements were comparable to the reference measurements determined by the expert. Discussion and conclusion: We expected differences in accuracy between the first and second groups, as the students in the second group had never used an ultrasound machine before the study. Their knowledge of anatomy acquired during their studies helped them to orient themselves in the subject's body. The differences in accuracy between the first group and the experienced practitioner can be explained by the fact that the students had only 15 hours of laboratory practice several months before the measurements. If we were to continue the study, we would include students from lower years and students from the second cycle of the Radiologic Technology program to obtain more measurements. We believe that we have achieved our set goal and answered the research questions.
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