THE RELATIVE BIOLOGICAL EFFECTIVENESS OF 22-Mevp X-RAYS, COBALT-60 GAMMA RAYS, AND 200-Kvcp X-RAYS. IV. DETERMINED BY EFFECTS ON THE IRON-59 UPTAKE IN RATS
A series of six simultaneous experiments was conducted with Co/sup 60/ gamma rays and 22-Mevp and 200-kvcp x rays. Fe/sup 59/ was injected at the optimum time for each dose level, and the l5-day uptake thereafter was determined. The effectiveness of the radiations was compared by choosing a comparable effectiveness level (ED/sub 50/) on the linear response curve. The average of six experiments yielded RBE values of 0.85 for Co/sup 60/ gamma rays versus 200-kvcp x rays, 0.84 for 22-Mewp x rays versus 200-kvcp x rays, and 0.99 for 22-Mevp x rays versus Co/sup 60/ gamma rays, based on the absorbed dose to soft tissue. (auth)
- Research Organization:
- Univ. of Texas, M.D. Anderson Hospital and Tumor Inst., Houston
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-017516
- OSTI ID:
- 4835541
- Journal Information:
- Radiation Research, Journal Name: Radiation Research Vol. Vol: 16
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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