JAMA. 1933;100(22):1786. doi:10.1001/jama.1933.02740220052021.
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Research on Roentgen Rays and Light  The Deutsche Röntgengesellschaft and the Deutsche Gesellschaft für Lichtforschung held recently a joint session in Bremen. The Rieder gold medal was awarded to Prof. Alban Köhler of Wiesbaden, who has become widely known through his work on "Die Grenzen des Normalen und die Anfänge des Pathologischen im Röntgenbild." Considerable time was devoted to papers and discussions on the roentgenologic diagnosis of the cranium and of the central nervous system, particularly with respect to their value for neurology, internal medicine and surgery. In this field, Peiper of Frankfort-on-Main presented a paper on "The Contrast Method in Neurology," Löhr and Jakobi of Magdeburg on "Arteriography of the Blood Vessels of the Brain," Wustmann of Düsseldorf on "The Contrast Method as Applied to the Central Nervous System," and des Plantes of Utrecht on "The Roentgenologic Examination of the Cranium." A number of the papers were devoted to


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