302 RADIATION STANDARDS, INCLUDING FALLOUT Dr. Cuamperuatn. Thatis right. Representative Hosmer. With what frequency do you suggest that they have the equipment inspected by some qualified individual? Dr. Cuamperuain. This is different for different types of equipment. Ifa manis using a fluoroscope, for instance, only occasionally andthere is no change madein the tube or the other arrangements of the machinery I am sure once every 2 or 3 years is quite adequate. In anothersituation such as a machinein high use in my own department wewill inspect it as often as once a week with a check calibration. Representative Hosmer. The doctor himself, when he leaves the medical school, what does he feel his responsibility is with respect to checking his equipment? Dr. CuamBer.ain. Most of them who are using the equipment occasionally, once every 2 or 3 years is quite sufficient, unless a change is made. Representative Hosmer. Isn’t the man who uses the equipment least frequently the one who may use it most grossly ? Dr. Caampertain. But he uses it on fewer people less often. Representative Hosmer. In other words, the risk to the total population is less but to the individual is greater? Dr. CHampervatn. Noneof these levels that we are using now are of any significant risk to the individual anyway. This is of importance in the whole movementto cleaning up radiation. It is largely one of good hygiene and also of trying to reduce large volumeeffects over population groups. Representative Hosmer. How many hours’ schooling does a medical student take ? Dr. CHamepertain. In the total in his 4 years? Representative Hosmer. Yes. Dr. CHAMBERLAIN. I haven’t worked it out. Representative Hosmer. J am trying to get some feeling. You say the average number of hours of radiation safety given to medical students is 4.4? Dr. CHAMBERLAIN. Specifically to this purpose. This is not counting what may be indirectly brought into other parts of his courses. Representative Hosmer. Is that a semester-hourfigure ? Dr. CuamMBeriarn. No; this is a total of the 4 years of medical training in most medical schools. Representative Hosmer. How manyhoursof training do they get. a year, then ? Dr. Cuampertain. They usually go for 9 monthsall day long, 514 daysa week. I can’t work it out for you this fast. Representative Hosmer. You mean over the 4 years that they go to medical school they spend a total of 4 hours and 24 minutes hearing about radiological safety. Is that what you intend to say? Dr. Crrampertain. That is the best average figure we could work out from inquiring from the professors in the various medical schools. I thinkit is probably good compared to some other importantsubjects such as the toxicology of serious drugs and so forth. It is quite a commendable amount of time. Probably about in order, as Mr. Price said, would I increase it—I think I would increase it to perhaps 5 or 6, but IT think anything more than that would probably be a loss of perspective in the total of medical education. Apterghsia Siapane inland aanmipiagerse? tite