Tantalum radiography of the respiratory tract in dogs.
ALTHOUGH radiography of the respiratory tract was suggested by Chevalier Jackson in 1918 1 the full potential of this diagnostic aid has never been realized. The major drawbacks of the three radiopaque materials thus far employed in radiography of the airway 1-4 have been that:
DISPLACEMENT IRRIGATION OF NASAL SINUSES: A NEW PROCEDURE IN DIAGNOSIS AND CONSERVATIVE TREATMENT
The procedure here presented is a simple method of introducing fluids into the sphenoid and posterior ethmoid sinuses. Heretofore, the irrigation of these sinuses has been rendered difficult by their positions and the inaccessibility of their ostia. Only occasionally can the normal opening of the sphenoid be used for the introduction of a cannula, while in the case of the posterior ethmoid cells it is practically impossible. Perforating the sinus walls, for the purpose of instilling fluids, is dangerous; it is not always accurate, and it produces inflammatory reactions which defeat the essential purpose of the treatment. It occurred to me that those very mechanical obstacles which prevent the proper drainage of the posterior cells might be turned to account in similarly retaining therapeutic solutions in contact with the lining membrane. My problem, therefore, was the introduction of such solutions into the sinuses without producing trauma, and the
USE OF INJECTED IODIZED OIL IN ROENTGEN-RAY DIAGNOSIS: OF LARYNGEAL, TRACHEAL AND BRONCHO-PULMONARY CONDITIONS
The introduction of a contrast substance into the bronchial tree as an aid to roentgenographic diagnosis was first practiced by Jackson.1For the purpose of lung mapping he employed dry bismuth subcarbonate, which was insufflated through a bronchoscope. In 1918, Stewart and the late Dr. Lynah2demonstrated excellent roentgenograms of pulmonary abscesses and bronchiectatic cavities which had been filled with an emulsion of bismuth in olive oil. The endobronchial injection of lipiodol, an iodized vegetable oil containing 40 per cent of iodine by weight, was first practiced by Sicard and Forestier3after they had successfully employed it in the spinal canal and other body cavities. The oil and iodine are firmly bound and, owing to its marked radiopacity and nonirritating qualities, lipiodol has proved to be an excellent medium for bronchography. Forestier and Leroux,4Sergent and Cottenot5and others repeated the experiments with gratifying results.