. The principles and practice of roentgenological technique . Stereoscope This method has the advantage in that itneeds no special apparatus or viewing arrange-ment. The plates are placed on the usuallyilluminated surface, one with sensitive sideto observer and one with glass side. The mir-ror is then held between the eyes. One eyeviews the plate directly. The other eye viewsthe other plate in the mirror and the stereo-scopic effect is obtained by varying the dis-tance of the eye from the plates. ( Fig. 300.) Sytnphany Eykman has modified the viewing of thestereoscopic image by using transpare
. The principles and practice of roentgenological technique . Stereoscope This method has the advantage in that itneeds no special apparatus or viewing arrange-ment. The plates are placed on the usuallyilluminated surface, one with sensitive sideto observer and one with glass side. The mir-ror is then held between the eyes. One eyeviews the plate directly. The other eye viewsthe other plate in the mirror and the stereo-scopic effect is obtained by varying the dis-tance of the eye from the plates. ( Fig. 300.) Sytnphany Eykman has modified the viewing of thestereoscopic image by using transparent, in-stead of opaque mirrors. By this means theRoentgen picture is seen as a phantom image,which appears solid and in which a ruler maybe inserted and the exact distance betweenany two points measured. By this methodthe radiograph may be viewed simultaneouslywith an ordinary stereoscopic photograph ofthe object reduced to the same size. ] ■ ~ • r n GROUND GLASS8-8 \ n y ^ II 1! 11 !1 i1 Fig. 301.—Plate-illuminatinj ELEVATION box with filing SECTION Either transmitted or reflected light may be used. CHAPTER XXIITHE X-RAY LABORATORY The api)lication of the Roentgen Rays as adiagnostic agent in every field of medicine andsurgery has made the x-ray department in-dispensable in a hospital organization. Though it is acknowledged that the art ofRoentgen diagnosis has not yet reached itshighest and fullest development, it cannot, onthe other hand, be denied that it has madetremendous strides and conquered many fields,helping and benefiting the surgeon and phy-sician in innumerable ways. It might seem that at this late day, it wouldbe unnecessary to argue for the value of theRoentgen Ray laboratory as a diagnosticagency, but the state of this department inmany hospitals seems to indicate a rather tardyrecognition of the service it can render inmedicine and surgery, and the responsibilityfor this cannot be placed entirely on the man-agement or the lay officers. The obje
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectradiogr, bookyear1920
