he RADIATION STANDARDS, INCLUDING FALLOUT 297 Representative Price. On page 3 you say it is also evident that the means to accomplish significant improvement are at hand. You are talking about radiation exposure, and so forth, there? Dr. Cuampzruain. Yes, sir. ; Representative Price. What are the means that you are thinking about here ? Dr. Cuampertain. I think they are exactly the ones that the National Committee on Radiation Protection has been drumming into everyone. Generally, the increase in filtration, the more careful use of cones and such things that have to do with equipment, but even more importantly the educated judgment of the people who choose what procedures to do and how often to do them on whichpatients. This to my mind isthe place at which the great improvementin the intelligent use of radiation can be achieved. Representative Pricz. Also on page 3 of your statement you say that many of the most important technical factors in dosage reduction also depend on highly skilled application of intelligence rather than inherent characteristics of radiation apparatus. Dr. CHamMBerLaiIn. Yes, sir. Representative Price. Do all doctors and dentists have this skill? Dr. CHaMBerLAIN. This goes through on to techniques and to everyone who is involved in this. I think that, as I seem to be repeating myself as to what I said a couple of years ago, there is a variation in this expertise, but I hope that this survey of our educacational program indicates that itisimproved. At least a great number of us who are practicing medicine think it is improved. The medical schools are doing something aboutit, too. Representative Price. Lamtalking about the questionnaire on page 4. Yousay atotal of 49.4 percent replied to this questionnaire. Dr. CHAMBERLAIN. Yes. Representative Price. What about the other 50 percent ? Dr. CuampBertain. Of course 50 percent is pretty good for a questionnaire reply in medicine. Representative Price. This is a highly technical professional thing. Dr. Cu amMBerRLAIN. Yes, sir. Representative Price. [ would say in a normal questionnaire this would be an exceptional response. Dr. Cuampberrnary. I thought it was pretty good. At Jeast 50 percent that replied gave 15,000 speeches, and I don’t know whetherthe other 50 percent gave none or gave a few more. I thought it was pretty good. _ Incidentally, our reply from the State medical societies was also Just about a 50-pereent reply. Perhaps doctors get so much mail that they are not as careful about looking at it as they should. Representative Price. Do you think they get as much as we get? You state on page 5 that the average numberof hours in the medical echool on radiation safety given to medical students is 44. Do vou think this is adequate? Dr. Crrampernain. Of course, if this were the only mention made of radiation protection and radiation control IT would say it ts not aclequate. I would like to see that raised some, too, but it is difficult to know just what you ought to do in medical curricula, picking out separnte y + oe toe = etal , tatetac eatecte os SDBRR etecere INRE easeRGESSURESUR TIE os