File:Radiography, x-ray therapeutics and radium therapy (1915) (14757701315).jpg

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Identifier: radiographyxrayt00knoxuoft (find matches)
Title: Radiography, x-ray therapeutics and radium therapy
Year: 1915 (1910s)
Authors: Knox, Robert, 1868-1928
Subjects: Radiography Radiotherapy X-rays
Publisher: London : A. & C. Black
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: MSN

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The earher therapeutic tubeswere of small diameter, and were exliausted to work with a small amount of current in the secondary,the resistance of the tube beingkept low in order to ensure alarge percentage of soft raysdischarging from the tube. Thebulb of the tube was made verytliin with the intention ofallowing as many of the softrays to pass as possible. Specialglass -windows were introducedopposite the anti-cathode toallow still further the softestrays to pass. A gradual tendency hasasserted itself of late to use thelarger tubes, and a harderquality of ray has taken theplace of the very soft one. Thelatter was found to produce aconsiderable degree of reactionand even dermatitis without inany way increasing the thera-peutic action on the deepertissues. Even in the treatmentof ringworm it has been foundthat satisfactory results areobtained when a hard tube isI used, and the reaction obtainedkiii^ is much less than that from a softtube. And inthis disease theuse of ^ mm.filter of alu-
Text Appearing After Image:
FiG. 213.- -Diagiaiu to illustrate a method of circulating water to the auti-cathode of a tube. (Schall.)The tube is shown unprotected. This wouM not occur in actual practice. gives miniumquite good re-sults, with hardly any reaction, and only slight delay in the epilation. So that even forthe most superficial conditions we may have to treat, a hard ray canbe employed and a filter used. The Coohdge tube promises to beof great value in therapeutics. With its ready adjustment of quality THERAPEUTIC TUBES 295 of ray emitted from the tube it should be possible to select the properdegree of hardness at will, and arrange the tube to produce it for »S5^ e

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  • bookid:radiographyxrayt00knoxuoft
  • bookyear:1915
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Knox__Robert__1868_1928
  • booksubject:Radiography
  • booksubject:Radiotherapy
  • booksubject:X_rays
  • bookpublisher:London___A____C__Black
  • bookcontributor:Gerstein___University_of_Toronto
  • booksponsor:MSN
  • bookleafnumber:421
  • bookcollection:gerstein
  • bookcollection:toronto
  • bookcollection:medicalheritagelibrary
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27 July 2014

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