. Radiography, X-ray therapeutics and radium therapy . nd the fluorescent screen or photographic plate, they have become verymuch diffused, and the thicker the subject the greater the diffusion. Theprimary object, therefore, is to reduce this distance in order to obtain quickerexposure and sharper and more brilliant radiographs, and for this purposeit is necesary to combine a compressor with the cylinder. The end of thecylinder is fitted with an ebonite rim, and the whole apparatus is raisedand lowered by a lever. Some parts of the human body can be compressed three or four incheswithout causi
. Radiography, X-ray therapeutics and radium therapy . nd the fluorescent screen or photographic plate, they have become verymuch diffused, and the thicker the subject the greater the diffusion. Theprimary object, therefore, is to reduce this distance in order to obtain quickerexposure and sharper and more brilliant radiographs, and for this purposeit is necesary to combine a compressor with the cylinder. The end of thecylinder is fitted with an ebonite rim, and the whole apparatus is raisedand lowered by a lever. Some parts of the human body can be compressed three or four incheswithout causing any discomfort to the patient, and the time of exposure isthus very greatly reduced. The compressor is also of great use in reducingthe movement due to respiration, and thereby conduces to greater sharpnessand definition in the radiograph. There are modifications of this type of compressor which are preferredby some workers, and possess advantages over the Albers-Schonberg. Thecompressor introduced by Dr. Gilbert Scott possesses all the advantages. 70 RADIOGRAPHY of the Schonberg apparatus, and is much more adaptable and easy ofmanipulation. The Upright Screening Stand.—This useful piece of apparatus maybe simple or very complicated, with conveniences for stereoscopic movements must be easy. Several types of screening stands areillustrated. The most useful are Levy-Dorn, Wenckebach, the extremely
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