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Edgar G. Ballenger, M.D.; Omar F. Elder, M.D.; Harold P. McDonald, M.D.
JAMA. 1932;99(13):1084. doi:10.1001/jama.1932.27410650001011.
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Is the present method of viewing roentgenograms providing the maximum information and benefit from x-ray films? It is our opinion that it is not. Repeated study will frequently permit the observation of unexpected points which are not at first noted. One usually sees what one is looking for and often fails to see what one does not suspect. Especially is this true if the questions brought out by the history and physical examination seem answered by routine study of the films.

For many years we have made it a practice, after the usual study in a view-box, to place films in a convenient window in order to look them over from time to time as occasion presents itself. While this plan has afforded certain advantages, we have not been able to find a satisfactory method of display. The films become wet, soiled or otherwise damaged, or perhaps misplaced. Finally we


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