| as ‘ a he Of ice ¢Memorandumak teh oe TO ’ FROM Ce Le Dunban, Director, Division,of f Biologyand. _ Medicine, Washington ; ent ah Shas & why Sak sR andes es! 38. R.‘Bepirie,Manager,OakBidge.Op rati“ghist o ¥ 28 ha BeST A? SUBJECT:ierterestrae” SYMBOL: . 8 4, ‘peal Sf . Mt i ORB:CSS Reference ‘ds wade to your mencrantan”dated November 21, ‘956, eyabol BM:CLD, subject as above, with ‘reference ‘to @ pilot study .of x-ray . exposures from the records of our Oak Ridge.Community Hospital.| “bee po* Hee aed v ae ee, TRE ee ze:ek ttt weti Preliminary discussions withMr; Cari D.Jeffries,Director,‘and Robert P. Ball, M.D., Radiologist, “dndicate that there existsat the Oak Ridge Hospital exceptional opportanities| fora pilot study of the actual exposure from diagnostic procedures....For each type of diagnostic examination at Oak Ridge Hospital a ‘standard set of pictures is made and the milliampere setting and thetine”and Voltage used are’recorded ‘for each. At the present time it.‘eppears”‘that coupletely | reliable records are available for 30,000to 35,000exposures. From the data it will be possible » With a few additional dosimetry measurements, to make an estimate of dose for each exposure.”;In addition, the program of x-ray work at the Oak Ridge’Hospital canprovide indefinitely a .. contiming standard recording of all. diagnostic exposures. From these records the dose calculations can readily be made. The standard recordings have been consistentlykeptsince October, 19526 In connection with ‘obtaining data of ‘interest to‘the Health Physics Division, ORNL, D. M. Davis and E. De Gupton have made some limited phantom studies utilizing the Oak Ridge Hospital facilities. ORNL might be able to furnish some additional dosimetry measurements, but we believe outside resources. would have1to be| Brovided for f other | phases of the pilot studye : : We recommend that a member of yoar staff.“come ‘to ‘Oak Ridge and discuss plans for setting up the pilot study proposed. Dr. C. 8S. Shoup and Mr. H. J. McAlduff of our Research and Development Division will be pleased to arrange for discussions with the Oak Ridge Hospital authorities in order to help activate |a+Program|of s Recordings 1 feel this is desirable. Pe wget Sos, - Rely) J2 284 | seoven 10% pre wey AEG HORT. ts ci MEDC, HELIH8 SME) — 9-7@yew siFt 9000151