American X-ray journal (1903) (14755792674)

Identifier: americanxrayjour1213unse (find matches)

Title: American X-ray journal

Year: 1903 (1900s)

Authors:

Subjects: X-Rays Radiography

Publisher: St. Louis : American X-Ray Publishing Co.

Contributing Library: The College of Physicians of Philadelphia Historical Medical Library

Digitizing Sponsor: Open Knowledge Commons and the National Endowment for the Humanities

Text Appearing Before Image:

y2 to 8^2inches with a 3-inch spark gap in seriesto prevent blackening of the tube. The KASSABIAN.—INSTANTANEOUS SKI A GRA PHY. 43 distance between antikathode platinumplate and the surface of the part that isbeing x-rayed should be from 12 to 15inches. The plate used is especially pre-pared for x-ray work, manufactured by theCramer Co., of St. Louis. Xo intensify-ing screen is employed. All dressings andclothing should be removed and the partlaid bare when using these short expos-ures. The time of exposure should becounted (in seconds) from the time the After the plate has been exposed it mustbe developed, and here is the point whereindividual skill is highly important.Most of the x-ray experts seem to be lack-ing in the knowledge how to develop theplate after it has been exposed to theaction of the rays, and for their benefitI deem it expedient to give the followinghints concerning the development of un-der-exposed plates: The developing so-lutions should be slightly stronger than

Text Appearing After Image:

POSTERIOR VIEW, EXPOSURE, 25 SECONDS. Acute Pneumonic Phthisis—whole left lung is hazy, indicating general infiltration and notconsolidation ; physical signs and clinical symptoms non-characteristic ;case of four weeks duration ; tubercle bacilli absent; noticethe articulation of dorsal vertebrae. rays are penetrating perfectly (which isascertained by using the fluoroscope), atthe instant the shielding lead plate is re-moved. When a static machine is em-ployed the time of exposure should be in-creased by 1/5 to 1/3. The time of ex-posure with a static machine depends uponthe size and number of revolving platesand the number of revolutions per minute.I have used a mica plate machine whichcan stand a high speed without danger ofbreaking. the ordinary photographic formula; afterthe oxidizing power of the developer hasbeen lessened by use, new or fresh solu-tion should replace the old; and lastlythe time of development should be length-ened, exercising care to not cause foggingof the pl

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1903

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