Radiograph viewer in Memorial Hospital’s radiology department. The images in the upper row are of a kidney and ureters, apparently enhanced by an intravenously-administered iodine contrast medium, which would have been a new concept in the 1930’s. The lower row may be a barium series of the gastrointestinal tract. The use of barium sulfate contrast medium was introduced in 1904
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Memorial Hermann Hospital System, "X-ray Viewing Box at Memorial Hospital" (1937). Library Exhibit Images. 152.