VENTRICULOGRAPHY FOLLOWING THE INJECTION OF AIR INTO THE CEREBRAL VENTRICLES.

摘要: THE value of rontgenography in the diagnosis and localization intracranial tumors is mainly restricted to cases which neoplasm has affected skull. In an analysis X-ray findings one hundred /brain tumor from Doctor Halsted's Clinic, Heuer I 1 have shown that only 6 per cent. did cast a shadow, these it was calcified areas were differentiated by X-rays normal cerebral tissues. those instances (9 our cases) (has encroached upon sphenoid, ethmoid or frontal sinus, invading portion casts shadow r6ntgenogram. Such shadows are due displacement normally contained air tissues less pervious X-ray. This group minor practical importance because growth can be recognized destruction walls bony septa sinuses. Since penetrate brain tissues, blood, cerebrospinal fluid non-calcified tissue almost equally, any changes produced altered proportions components will not materially alter Although skull 45 frequently pathognomonic, on whole they represent late stages disease. As come diagnosed localized earlier, correspondingly diminished. For some time considered possibility filling ventricles with medium produce radiogram. If this could done, accurate outline photographed X-rays, since most neoplasms either directly indirectly modify size shape ventricles, we should then possess early ai-d affections. addition its radiographic properties, substance injected into must satisfy two very rigid exactions: (I) It absolutely non-irritating non-toxic; (2) readily absorbed excreted. The various solutions suspensions used pyelography-thorium,