. American quarterly of roentgenology . xamina-tion of the stomach six hours after the bismuth meal toascertain its motor efficiency, nor about the intestinesand the colon, so difficult to locate by ordinary methodsof percussion, and transillumination, and, partly for thatreason offering a rich field of research to the Roentgenol-ogist, first because we have not the time, and second, be-cause diascopy has added nothing to our knowledge be-yond that already furnished by Roentgenography. Asidefrom this, the steps of the method thus rapidly reviewed(and illustrated by ordinary Roentgenographs) by
. American quarterly of roentgenology . xamina-tion of the stomach six hours after the bismuth meal toascertain its motor efficiency, nor about the intestinesand the colon, so difficult to locate by ordinary methodsof percussion, and transillumination, and, partly for thatreason offering a rich field of research to the Roentgenol-ogist, first because we have not the time, and second, be-cause diascopy has added nothing to our knowledge be-yond that already furnished by Roentgenography. Asidefrom this, the steps of the method thus rapidly reviewed(and illustrated by ordinary Roentgenographs) by nomeans exhaust the possibilities of abdominal orthodias-copy. The probable nature of each case as indicatedby its history, laboratory findings, and clinical signs andsymptoms, should determine the particular plan of exam-ination to be adopted. Not infrequently the easy methodfirst described will admirably serve our purpose. For amore extended search we may choose to reject the shortermethod and select the longer one, or combine To Illustrate the Presidents Address OF EOENTGENOLOGY. 33 Inflation may reveal a tumor. To bring out the lessercurvature and pyloric end in stenosis or suspected cancer,the horizontal position with the patient on his right sideis probably the most valuable of all. We find, then, to state the matter briefly, that thougha Roentgenograph is much superior in quality to any-thing seen on the fluoroscopic screen, fluoroscopy, espe-cially orthodiascopy, deserves a place in the examinationof the stomach. For the simple purpose of locating accu-rately and beyond a doubt, its cephalic and caudal polesit is quite sufficient. In fact, for this purpose, it is much better than theordinary Roentgenograph, which needs to be interpretedaccording to the law of projection. For the study ofmotion the passage of the capsules or mixture down theoesophagus, into the magenblase and thence to the bot-tom of the stomach, for measuring the effect of inspira-tion (which is
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