. Light energy, its physics, physiological action and therapeutic applications . fp ^J Fig. 50.—RadiumReceptacle for Fig. 51.—Radium Receptaclefor the CEsophagus and Rectum. num. Aluminum, on the other hand, limits the passage ofthe a rays. In this connection the reader is referred to Ruth-et fords table on a previous page as to the thickness of alumi-num transparent to the different rays. Again appropriatethickness of lead prevents the passage of the penetratinggamma rays just as with the X ray. Radium, unenclosed,exposed to moisture loses its radio-activity. The accom-panying cu
. Light energy, its physics, physiological action and therapeutic applications . fp ^J Fig. 50.—RadiumReceptacle for Fig. 51.—Radium Receptaclefor the CEsophagus and Rectum. num. Aluminum, on the other hand, limits the passage ofthe a rays. In this connection the reader is referred to Ruth-et fords table on a previous page as to the thickness of alumi-num transparent to the different rays. Again appropriatethickness of lead prevents the passage of the penetratinggamma rays just as with the X ray. Radium, unenclosed,exposed to moisture loses its radio-activity. The accom-panying cuts, however, show several different applicators onthe market for the use of radium. In Figs. 50 and 51 are 750 LIGHT ENERGY. shown the devices of Dr. Max Einhorn1 for use in theesophagus, stomach or rectum. Fig. 50 shows the enclos-ing capsule and radium tube for the stomach, while shows the capsule and flexible bougie separately andattached for use in the rectum. There is no clinical evidenceto show that radium used within the stomach has been ofany practical value, however. aN. Y. Med. Record, March 5, 1904. KALE
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