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A GUIDE TO DOUBLE CONTRAST METHOD: X-ray Demonstration of Type Ⅱc Kenji Kumakura 1 1Cancer Institute Hospital pp.915-920
Published Date 1969/7/25
DOI https://doi.org/10.11477/mf.1403111147
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 Considerations are laid in this paper on basic principles of double contrast method in the supine position.

 This method, now making it possible to detect a most minute lesion of the stomach, has one prerequisite, that is, the ability of the examiner to take a satisfactory double contrast picture. Popularization of this method on the other hand gave rise to a perfunctory attitude toward the evaluation of radiographs taken by this method. There have been increasing numbers of double contrast radiograph in which its drawback for interpretation of gastric lesions is more conspicuous.

 Theoretically a good double contrast radiograph is one that visualizes exactly what can be observed macroscopically, or exact finding of gross pathology must be reflected on it. Technically a good double contrast radiograph must have following requisites; good coating of contrast meal on the mucosa without air bubbles or congelation; minimum influence of gastric juice and mucus; and moreover, contrast medium must be accumulated in depressions and it must be shed over protuberances.

 For taking a good double contrast film, therefore, following points are of major importance,

 1) The amount of barium and air should each be from 200 to 300 ml, at most from 500 to 600 ml respectively.

 2) The surface of the mucosa must be cleaned off by frequent postural changes so that contrast medium might be accumulated in depressed areas and shed over protuberances.

 3) The shadow of the duodenal cap or vertebrae should not be superimposed on that of a lesion.


Copyright © 1969, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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