. Die Röntgenstrahlen in der medizinischen Arbeit . f therays. Botation, jedoch, gerendert einen Fixing-Point neces-sary. Dieses erhielt er durch Aglass-Indikator, zweimal atright Winkel gebogen, mit einem kurzgeraden Terminal platziert so asto Punkt genau auf die antero-posterior Achse des Zentrums der Hornhaut. Auf diese Weise werden lokalisierende Radiogramme eines Fremdkörpers (einer Paillette) auf der Bindehaut seines eigenen Augapfels lokalisiert. Im Februar 1897 wurden zwei Fälle von Stahlfragmenten im Vitreoushumor von Drs vor die Augenklinik des College of Physicians, Philadelphia gebracht. Oram ein und Hansell. Die l

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. The Röntgen rays in medical work . f therays. Botation, however, rendered a fixing-point neces-sary. This he obtained by aglass indicator, bent twice atright angles, with a shortstraight terminal placed so asto point exactly to the antero-posterior axis of the centre of the cornea. In this way heobtained localizing radiograms of a foreign body (a sequin) placedon the conjunctiva of his own eyeball. In February, 1897, two cases of steel fragments in the vitreoushumour were brought before the Ophthalmological Section of theCollege of Physicians, Philadelphia, by Drs. Oram Eing andHansell. The latter gentleman mentioned another instancecommunicated to him verbally by Dr. de Schweinitz, who founda foreign body by the rays, and afterwards extracted it bythe Hirschberg magnet. Dr. Hansell, in a communication toThe Journal, Philadelphia, observed : Thus it will be seen thatthe bony walls of the orbit and the coats of the eye are permeableto the rays. By comparison of the shadow of the metal with that * Lancet, August 15, 1896.. Fig. 48.—Pellet and Fragment of Lead in Human Eye. Yan Duyse. MEDICAL AND SURGICAL APPLICATIONS 113 of the margin of the malar process of the superior maxillary bone, and the knowledge of the relation of the Crookes tube to thesensitive plate, the location of the foreign body can be closelyestimated. Dr. Stern, of the Philadelphia Polyclinic, however, claims byan original method to have succeeded six times in demonstrating, by both fluoroscope and radiogram, foreign bodies in the eye, undiscoverable by other means. In each instance he reportedsubsequent removal by ophthalmologists. Before he detected

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• bookcentury1800
• bookdecade1890
• booksubjectrad
• bücherunterlagexrays