[Adolf Bengel--the second inventory of lumbar pneumoencephalography]

In 1918, Walter Dandy reported contrasting liquor-filled spaces by air for the first time. He published the results in eight pneumencephalographies after lumbar air application in 1919. Without knowing about Dandy's papers Adolf Bingel performed his first lumbar encephalography in 1919. In contrast to Dandy, based on this experience Bingel developed ventricular imaging, improved the technique of lumbar puncture and did a scientific evaluation of the results.