Practical points in the use of X-ray and high-frequency currents (1909) (14570914950)

Identifier: practicalpointsi00judd (find matches)

Title: Practical points in the use of X-ray and high-frequency currents

Year: 1909 (1900s)

Authors: Judd, Aspinwall

Subjects: X-rays Electrotherapeutics Radiography X-Rays Radiography

Publisher: New York : Rebman Company

Contributing Library: Francis A. Countway Library of Medicine

Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

Text Appearing Before Image:

Fig. 34.—Above figure illustrates an X-ray tube connected up thewrong way. Above the target you will notice a number of greenrings A. The lower hemisphere is also filled with green rings,and at right angles to the surface of the target you will find an extra green spot B. This is where the cathode stream strikes the glassulb.

Text Appearing After Image:

Fig. 35.—Above figure shows the tube connected in the proper way andoperating satisfactorily. You notice that there is no green ring, andthat there is no green spot, and that the full hemisphere in front of thetarget shows a brilliant green. Special Tubes for Treatment PurposesThe one in most frequent use is designed byDr. Henry G. Piffard. It consists of two heavy 70 X-Ray and High-Frequency Currents lead glass bulbs connected together and havinga projection from one directly in front of thetarget. This projection has a window made of

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1909

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