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The authors have made an elaborate study of the photographic and other physical bases underlying the possibility of demonstrating soft tissue detail in the roentgenogram. The discussions on photographic emulsions, the spectrum of diagnostic rays and the quantitative factors in the choice of diagnostic radiation are carefully elaborated. The various other factors, such as the choice of tubes, use of compression, focus skin distance, use of filters for eliminating secondary radiation and the back fire radiation from the film mounting receive adequate attention. Examples are given of roentgenograms of esophageal varices, the soft tissues of the pharynx, the hypopharynx and the epipharynx. A few pages are devoted to roentgenography of the mammary gland. Probably at this time the most important field for soft tissue radiography is the larynx and hypopharynx. The book is essentially technical, and the explanations employ free use of higher mathematics. Most radiologists have a practical experience
Archiv und Atlas der normalen und pathologischen Anatomie in typischen Röntgenbildern: Die theoretischen Grundlagen und Möglichkeiten der röntgendiagnostischen Weichteiluntersuchung. JAMA. 1935;105(23):1939. doi:10.1001/jama.1935.02760490123029
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