By National Council on Radiation Protection and Measurements
This ebook is a duplicate of a quantity present in the gathering of the collage of Michigan Library. it really is made from electronic photographs created during the Library's large-scale digitization efforts. The electronic pictures for this publication have been wiped clean and ready for printing via computerized methods. regardless of the cleansing technique, occasional flaws should be current that have been a part of the unique paintings itself, or brought in the course of digitization, together with lacking pages.
Read or Download Exposure of the U.S. Population from Diagnostic Medical Radiation: Recommendations of the National Council on Radiation Protection and Measurements (NCRP report) PDF
Similar fitness & dieting books
The basic consultant to getting to know endoscopic options of the higher GI tract whereas technological advances have made endoscopy probably the most universal systems for studying the higher GI tract, studying tips on how to maneuver the tools and interpret the pictures will be troublesome for these with no event.
Nice colour illustrated step by step directions and masses extra!
Additional resources for Exposure of the U.S. Population from Diagnostic Medical Radiation: Recommendations of the National Council on Radiation Protection and Measurements (NCRP report)
Data concerning trends and variability of exposures in the United States are available from the Nationwide Evaluation of X-ray W d s (NEXT)program (Johnson and Goetz, 1986). 1 and indicate a rathex wide distribution of such exposures. Similar distributions of exposure have been found in England (Shrimpton et d , 1986) and Italy (Padovani et ab, 1987). With the advent of rare earth mand faster meen-fihn combhations, one might exp& that the mean expmre at skin entrance would be decreasing; However, the NEXT data suggest that,in spite of technologi- 26 I 3.
3 NUMBER OF EXAMINATIONS 1 51 project was later expaded to indude a stratified sample of 26 hoepitals, a n d d a t a f r o m t b e s e h o s p i ~ ~ ~ ~ A u g u s t 1 9 7 7 ~ July 1978. ~dJohnson &so&&a (Johmmand Abemathyt 1983). In 1980 end 1981, the B m m of Radialogid Health, m m the Center for Devkea and I h W u g k d Health (CDRH), conducted a hospital--basedsurvqr, which was called tbe Radiation Expsience Data (RED 1) Study (FDA, 1986). Data for 1981 and 1982 are available £mm the CDRH study (RED 2) cited earlier.
M d e y and Zilkha (1984)discussed v a r i m methods to reduce ladiaton d o s e i n t h e m a n a g e m e n t o f i n ~ l e s i o n sthat amclinically followed by the use of computed tomography but they did not provide any quautitative dose reduction factor. McCunough (1980)suggested that the p e ~ farmanceof&(;T-be-edandcheckedindtoensurea typical level of performance and to provide a baseline value for a pragram of quality assurance. dhatioa of the x-ray beam to conform to the body portion of intenst is extmaely important in dose reduction.