File:The Röntgen rays in medical work (1907) (14757456635).jpg

Identifier: rntgenraysinmedi1907wals (find matches)
Title: The Röntgen rays in medical work
Year: 1907 (1900s)
Authors: Walsh, David
Subjects: X-rays Radiography X-Rays Radiography
Publisher: New York : William Wood
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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ylindrical back, and painted whiteinside, can be made very cheaplyby a tinsmith to take the size ofnegative most commonly made useof. An electric lamp affords thebest means of illuminating it. Elaborate lanterns made incabinet work for the illuminationof ic-ray negatives are figured bythe instrument-makers, but as theycost from three to five pounds theyare rarely seen in practical use. Time Measurements. — Intreatment by x-rays the durationof the application is an importantpoint, and the accompanying figure(Fig. 58) shows a simple and in-expensive time-keeper for this pur-pose. It is started by pressing thebutton, and goes for six minutes;it then rings a bell and stops. Sand-glasses or stop-watches mayalso be used, but this little instru-ment seems particularly suitable for x-vay purposes, as fractionsof the time are indicated by the movement of the hand roundthe dial. It is made by Messrs. Vandome, Titford and Co.,56, Leadenhall Street, E.C., and costs seven shillings and sixpence.
Text Appearing After Image:
Fig. 58.—Time-Keeper fob,X-Ray Exposures. CHAPTER VIII THE PRACTICAL WORKING OF THE X-RAYAPPARATUS The coil—The tube—Screen-work—Photography. The proper management of Rontgen-ray work involves attention toa number of details, and demands careful study and long practice.Without experience, the operator may produce nothing but poorresults, even with the best and most costly coil. In the presentchapter an account is given of the elementary procedures necessaryfor the acquisition of familiarity with the apparatus, the case beingtreated in a manner appropriate to a beginner who has acquired acoil fitted with the ordinary hammer break, and driven by six oreight cells of an accumulator battery. The Coil.—The first step is to connect the coil with the battery.To do this, two wires are necessary, and the coil attachments mustbe made first and the attachments to the battery terminals after-wards. Before connecting the latter, be sure that the switch onthe coil is not closed. This swit

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