. The American journal of roentgenology, radium therapy and nuclear medicine . S. Figure 9. Fig. 7. (R indicates radiated area.) Section of the brain of dog B, 13 mm. below the surface,showing the dorsal limits of a lesion produced by 255 miUicuries of unfiltered radium em-anation for thirty minutes. (For further reference see text.) Fig. 8. R indicates radiatedarea.) Section of the brain of dog B, 21 mm. below the surface, showing the maximum ex-tent of the diameter of the lesion produced by 255 millicuries of unfiltered radium emanationfor thirty minutes. Fig. 9. (R indicates radiated area.)


. The American journal of roentgenology, radium therapy and nuclear medicine . S. Figure 9. Fig. 7. (R indicates radiated area.) Section of the brain of dog B, 13 mm. below the surface,showing the dorsal limits of a lesion produced by 255 miUicuries of unfiltered radium em-anation for thirty minutes. (For further reference see text.) Fig. 8. R indicates radiatedarea.) Section of the brain of dog B, 21 mm. below the surface, showing the maximum ex-tent of the diameter of the lesion produced by 255 millicuries of unfiltered radium emanationfor thirty minutes. Fig. 9. (R indicates radiated area.) Section of the brain of dog B, 28mm. below the surface, showing the ventral limits of the lesion produced by 255 millicuriesof unfiltered radium emanation for thirty minutes. Effect of Radium on Adult Mammalian Brain 541 showed a central area of brain softening, 10 of polynuclear leukocytes, and a zone ofmm. in diameter, with extravasated blood, hydropic degeneration of nerve tissue, whilethrombosed blood-vessels with necrotic the ganglion cells for a considerable distance. ■point ir / insertioaand


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