Indications for requesting and performing bedside radiographic examinations in an institutional setting are proposed. A prospective study of such examinations was made in a 500-bed hospital. All nursing units were evaluated for criteria used in requesting bedside examinations. It was found that general medical and surgical wards generate the greatest percentage of bedside studies, and yet their criteria for requesting such studies yielded the lowest percentage of validity. General criteria for utilization of mobile radiographic equipment could lead to better radiographs and improved allocation of equipment and personnel.
Tomograms and oblique radiographs were compared in 172 adult patients undergoing routine urography to assess the degree of renal outline visualized and to determine the best midpoint for nephrotomography. Tomograms proved better for demonstrating the renal outline (66.3% of patients demonstrating 78.4% of the renal circumference) than oblique views (only 23.2% of patients demonstrating 65.5% of the renal circumference). The combination of tomograms and oblique radiographs proved best, demonstrating 96.5% of the renal outline. Colon cleanliness was a significant factor. The midpoint of tomographic sections is determined by multiplying the anteroposterior diameter of the patient by 0.4.
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