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This monograph is the result of much careful, ingenious and original research having for its object the diagnosis and treatment of diseases of the nasal accessory sinuses. There is first a consideration of the principles of displacement, description of the apparatus employed, physics and physiology of the sinuses, as well as discussion of their anatomic peculiarities, their pathology, and the theory of their treatment. The author takes up the various types of radiopaque fluids and the method of their introduction, together with the various data of the proper roentgenology to be employed. Several chapters are devoted to studies of topography, cell identification, film interpretation, filling and emptying time. An interesting and also important chapter is that which deals with the observation of allergic changes in the sinuses by means of radiopaques. A series of case records and a complete bibliography are given at the end of the work. Great credit
The Displacement Method of Sinus Diagnosis and Treatment: A Practical Guide to the Use of Radiopaques in the Nasal Sinuses.. JAMA. 1931;97(18):1325. doi:10.1001/jama.1931.02730180061032