California Institute of Technology Cal Tech - Big T Yearbook (Pasadena, CA)

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ww, mp fr 2- 1:' ff '- DEPARTMENTS V,f- , . ,V ,, 24, ,p,.v,,, f ,- DR. SEELEY G. MUDD The Department of Radiation The facilities for research in the field of radiation have been greatly increased by the erection of a building designed and equipped especially for high potential X-ray work. The tube to be used, designed by Dr. Lauritsen of the Institute, is expected to operate in the neighborhood of a million volts. The two trans- formers, one located on the bridge, and the other in the pit, are each made up of five units of 140,000 volts, giving all a mean square volt- age of l,4L00,000, with a peak of about 2,000,- 000. The treatment room extends out into the transformer room, and the giant tube goes through it. Before any treatments are given, a number of physical tests and calibrations have to be made. ln addition to the therapeutic studies, physical work will be carried on. Under the direction of Dr. Seeley G. Mudd, the laboratory is making observations of the action of shortwave X-ray on deep seated malignant tumors. Data for the research rec- ords oi the Institute has been obtained by a group of physicians especially interested in the Work, and includes routine history, physical examination, etc. No miracles have occurred, and none are expected. It will be a matter of years before any definite statement of results can be given. Twenty-,Que

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