A system of instruction in X-ray methods and medical uses of light, hot-air, vibration and high-frequency currents - a pictorial system of teaching by clinical instruction plates with explanatory text (14570499587)

Identifier: systemofinstruct00mone (find matches)
Title: A system of instruction in X-ray methods and medical uses of light, hot-air, vibration and high-frequency currents : a pictorial system of teaching by clinical instruction plates with explanatory text : a series of photographic clinics in standard uses of scientific therapeutic apparatus for surgical and medical practitioners : prepared especially for the post-graduate home study of surgeons, general physicians, dentists, dermatologists and specialists in the treatment of chronic diseases, and sanitarium practice
Year: 1902 (1900s)
Authors: Monell, S. H. (Samuel Howard), d. 1918
Subjects: Vibration X-rays Diagnosis, Radioscopic Thermotherapy Electrotherapeutics X-Ray Therapy Vibration Diagnosis
Publisher: New York : E.R. Pelton
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School



Text Appearing Before Image:
Plate 29.—Faulty Methods of Examination. Study the.se and avoid the obvious errors.Tnthe upper figure see the slanting relation of the axis of the rays to the part under the pho-tographic film. If the thorax is radiographed in this manner distortion will make the resultuseless. See our teachings on divergence and distortion. In the lower figure see how farfrom correct is the axis of the rays with the screen and patient as shown. These two illustra-tions teach how not to do it with great clearness. All such work is mere trifling with thescientific principles of technic and is unworthy of anybody.
Text Appearing After Image:
Plate 30.—Instruction Plate teaching use of authors Frame to examine any part of thehead in the axis of the rays. The dotted lines on the exposed screen mark the axis at theirintersecting point. The front and back markers shadow these lines on the screen and all partaof the head can be brought into this field of non-distortion.