File:The principles and practice of roentgenological technique (1920) (14754189801).jpg

Identifier: principlespracti00hirs (find matches)
Title: The principles and practice of roentgenological technique
Year: 1920 (1920s)
Authors: Hirsch, Isaac Seth, 1889-1942
Subjects: Radiography
Publisher: New York, American X-Ray Pub. Co.
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

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ectacles: or better still, he should wear theprotective helmet. 2. The examination should be made withthe smallest possible opening of the dia-phragm. 3. The roentgenologist ought never to pal-pate by hand for a foreign body under thescreen, even when employing an opaque glove. 4. The palpation must be done with ametallic instrument placed on the end of awooden handle. EQUIPMENT OF ROOMS 229 5. In every examination the tube should notbe energized except at the exact moment ofuse. For this purpose the foot switch shouldbe employed. 6. The screen should never be held in thehand but by a protected handle fixed to theframe of the screen. 7. When it is necessary to remove thegloves for more delicate localization, the genologist ought to employ a small Spanishwall, lined with lead, to protect the knees andthe legs. Eqiiipniciit The assembling of the equipment of anx-ray laboratory presents many problems. Tothe uninitiated the apparent difference ofopinion among workers alone, based on their
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Fig. 311.—Serial room. The apparatus for making teleradiographic examinations is shown on the right. --\t the left is the vertical serial apparatus. roentgenologist must never hold the pencil formarking on the glass or the patient directly inhis hand but should employ a pencil holderwith a protective cuft. 8. If the Coolidge tube is used it should beremembered that the rays are emitted pos-teriorly to the anticathode, and that the roent-genologist is therefore subjected to more ex-posure than with the use of the gas tube. 9. If there are nuinerous fluoroscopic ex-aminations in the vertical position, the roent- varied experience, is puzzling and withthe manufacturers displaying a wide range ofvariety in devices intended to simplify thework, the problem of the selection of equip-ment becomes an exceedingly difficult one;for, who. indeed, shall decide, when expertsdisagree ? And yet. -when analyzed, it will be foundthat the difference of opinion among workersis not so great, but that t

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