Introduction: Diagnostic radiology is a part of the radiology, which allows for diagnose of the disease processes with the use of radiological methods. Today is the most common result of the examination morphological image display. In the assignment is described under what conditions are made x-ray pictures in standard projections, and what dose are typically accompanied by.
Purpose: The purpose of the assignment is to present the differences between the dose and radiographic physic in all of the standard projections between the three general hospitals – hospital A, B and C. With our assignment we will try to find out if in most hospitals in Slovenia are made similar useful x-ray pictures under the similar conditions.
Methods: At the production of the assignment we used the descriptive method, with a detailed study of domestic and foreign literature already written in this field. For data collection we used a survey with a questions, which will be filled by the radiologic technologists in our three selected hospitals at different locations in Slovenia.
Results: Comparison of results shows that at the radiographic physic in the hospitals appear the greater difference between the projections and genders The comparison of the size of the image fields shows that the hospital B uses in nearly all the projections smaller size of the image field while hospital A uses in most projections a larger size.. When using the anti-scatter grid, hospital B and C use anti-scatter grid the same, in the hospital A is the anti-scatter grid used in the same projections as in the hospital B and CWhen using filtration, we can see that hospitals in most cases, use the recommended filtration. In the use of ionization chambers, they mostly follow the rules.
Discussion and conclusion: Reduce of dose in a patient is associated with the selection of appropriate imaging technical parameters – kV, mAs, filters, anti-scater grids, nominal focal spot values and the size of the field. Dose rate must be as small as possible, and the result optimal. Dose is also greater with greater thickness of the object and thus increasing the mAs, which is the case, that the dose with the side projections is greater than in PA or AP. The differences in dose between the sexes appear because of the different size of the image fields and/or selection of mAs. The bigger fields uses hospital A and causing also greater dose to the patient, but not in all projections. Hospitals use anti-scatter grid in about half of the projections, and in the other half of the projections the anti-scatter grid is not used. Hospitals A, B and C use the standard filtration.
|
