Missouri Code of State Regulations
Title 19 - DEPARTMENT OF HEALTH AND SENIOR SERVICES
Division 20 - Division of Community and Public Health
Chapter 10 - Protection Against Ionizing Radiation
Section 19 CSR 20-10.110 - Relative Biological Effectiveness Values
Universal Citation: 19 MO Code of State Regs 20-10.110
Current through Register Vol. 49, No. 18, September 16, 2024
PURPOSE: This rule lists relative biological effectiveness values which are referred to in other rules of 19 CSR 20-10.
(1) The relative biological effectiveness (RBE) values in Table I are convenient approximations to relate dose in rads to dose in rems. The value will vary greatly with the biological effect being considered, the acuteness of the exposure and many other factors. The qualified expert should evaluate these factors for each situation and should adjust the values accordingly.
| Table I-RBE Values | |
| Radiation | RBE |
| X-rays and gamma rays of all energies and electrons and beta rays above 0.03 Million electron Volts (MEV) | 1.0 |
| Fast neutrons and protons up to 10 MeV | 10 |
| Alpha particles | 10 |
| Heavy recoil nuclei | 20 |
*Original authority: 192.420, RSMo 1963.
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