RESUMEN
Risk coefficients are the main quantitative parameter when determining the extent of X-ray load in patients investigated with roentgenography. A concept of effective dose equivalent HE is used for this purpose. The present study is aimed on the determination of the HE for both orthopantomography and routine extra-oral roentgenogram of the mandibula. Measurements were performed on Alderson Rando phantom. The resulting effective dose equivalent for investigation with orthopantomograph represented 99.0 mu Sv and 80.9 mu Sv for the extra-oral projection, respectively. Based on the results obtained, the load with dental X-ray was shown to be disproportionately high.
Asunto(s)
Radiografía Dental , Carga Corporal (Radioterapia) , Humanos , Dosis de Radiación , Radiografía Dental/métodosRESUMEN
The authors present a technique of longterm lingual artery catheterization for intraarterial regional chemotherapy. The transtemporal approach enables safe introduction through the external carotid artery. Catheterization technique is presented in 16 patients with the diagnosis of carcinoma baseos oris and carcinoma linguae. Both the lingual arteries were infused in four patients with tumors spreading over the midline. The dislocation of the catheter was found seven times of twenty catheterizations. The following catheter repozition was always successful.