Since 1922, Dr. Henri Coutard has worked in Europe, and Drs. Chevalier and Chevalier L. Jackson, Dr. W. Edward Chamberlain and others in America, on lateral roentgenography, which is helpful in the diagnosis of laryngeal cancer and in giving laryngologists a more precise idea of neoplastic growth and its extension.
But even with the valuable help of lateral roentgenography, laryngologists did not have the means for a complete study; they had only two points of view, laryngoscopic and lateral.
A frontal view, or anteroposterior projection, cannot be obtained by the ordinary roentgenographic technic, because the interposition of the vertebrae prevents one from seeing the anatomic details of the larynx, composed, as it is, of tissues of poor roentgenologic contrast.
With tomography, the new technic, by which roentgenograms can be made selective of different levels or sections of the body, I have been able to obtain a frontal view, or anteroposterior
LEBORGNE FE. TOMOGRAPHY AND CANCER OF THE LARYNX. Arch Otolaryngol. 1940;31(3):419–425. doi:10.1001/archotol.1940.00660010423002