The Roentgen rays in medicine and surgery as an aid in diagnosis and as a therapeutic agent : designed for the use of practitioners and students (1901)
Williams, Francis H. (Francis Henry), 1852-1936 · New York, Macmillan · leaf 109
provided with a narrow strip of lead along its length,because this metal casts a shadow, and therefore the physician is ableto follow its point as he traces the appearances observed. I have hadsome special pencils made, but the crayons, in brass tubes, which actors 78 )ENTGEN RAYS IN MEDICLNE AND… … Fig. 6o. Shows method of examining a patient with the screen with celluloid cover, on whichthe outlines of the heart and diaphragm have been traced. The diaphragm under the stretcher ispulled a little out of place so that it may be better seen; it should, of course, be directly under theoutlines,…
Radiography · X-rays
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