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December 21, 1907, Vol XLIX, No. 25 >
ARTICLE | December 21, 1907

PHYSIOLOGIC AND CLINICAL OBSERVATIONS ON THE ALIMENTARY CANAL BY MEANS OF THE ROENTGEN RAYS.

G. E. PFAHLER, M.D.
JAMA. 1907;XLIX(25):2069-2077. doi:10.1001/jama.1907.25320250021001d.
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The superiority of this method of examination over others is recognized, I think, by all who have investigated it sufficiently. To date, there have been about 55 contributions on the subject, and the method has reached a stage of development, when no case involving a chronic ailment of the alimentary canal is completely investigated until there has been a Roentgenologic examination by a competent man.

Cannon1 by this method has added to our knowledge of the physiology of the gastrointestinal tract. Rieder2 of Munich, however, was the first to place the clinical study on a firm footing. After the administration of large quantities of bismuth food he was enabled to obtain beautiful negatives showing the size, position and form of the stomach, and to a certain extent the rate at which the stomach would empty itself.

Holzknecht3 advanced particularly the Roentgenoscopic method, and by means of the

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