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Room Henrard ©Oswald Pauwels M&L      Here is the radiology practice of Captain-Doctor E. Henrard who was radiologist at the military hospital in Brussels at the time of the First World War. Note that the RX unit was already equipped with fluoroscopic screens to amplify the action of X-rays Dangerous secondary effects of X-rays were not well known at that time. The first X-rays facilities were not equipped with radiation protection equipment and for patients nor for the staff. During the first decade after the discovery of X rays, important progress were made in radiological devices: the use of a "hot" cathode (Coolidge tube in the U.S.), the increased heat dissipation at the anode by an internal cooling or by use of rotating anodes (Brouwers Netherlands); the use of more efficient intensifying screens, better use of photographic plates with new materials (Eastman States US-Gevaert in Belgium). The replacement of batteries and dynamos by a widespread electrical power network supplied sufficient energy.