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Units Etc.
| Term | Definition |
|---|---|
| 1 c/kg | 1 R |
| 1 Gy | 100 Rad |
| 1 Sv | 100 Rem |
| Natural Exposure | 3 mSv |
| Manmade Exposure | 3.3 mSv |
| TEDE Occupational | 0.05 Sv |
| TEDE Public | 0.001 Sv / 1 mSv |
| Annual Efd | 50 mSv / 5 rem |
| OSL | 1 mrem |
| TLD | 5 mrem |
| Ring | 10-20 mrem |
| Pocket Ionization Chamber | 0-200 mR |
| Film Badge | 10 mrem |
| Pregnant Whole Pregnancy | 5 mSv |
| Pregnant per month | 0.5 mSv |
| Lens of Eye | 150 mSv/year |
| Skin/Thyroid/Extremities | 500 mSv/year |
| Lifetime Efd | 10 x age in mSv |
| KVP Accuracy | 5% |
| Reproducability | 5% |
| Reciprocity | 10% |
| Linearity | 10% |
| Occupational Risk | 2.5% chance of fatal accident over entire career |
| Low LET | xrays, gamma rays, beta particles |
| High LET | alpha particles |
| Direct Effect | from High LET regardless of O2; on DNA |
| Indirect Effect | from Low LET, worse if O2 is present; hits water, makes free radicles |
| Target Theory | DNA is the master molecule; cell will die if DNA is inactivated |
| LD 50/30 Dose | 3-4 Gy |
| Death of entire population in 30 days dose | 6 Gy |
| Hematopoietic Syndrome dose | 1 - 10 Gy |
| GI Syndrome Dose | 6 - 10 Gy |
| Central Nervous System Sydrome Dose | 50 Gy |
| Japan Bombings most common illness | Leukemia |
| Chernobyl most common illness | Thyroid Cancer |
| Desquamation Dose | 10 Gy Dry 15 Gy moist |
| Temporary Sterility Dose | 2.5 Gy |
| Permanent Sterility Dose | 5 - 6 Gy |
| Hematologic Depression | 0.25 Gy |
| cataractogenesis dose | 0.5 Gy |
| Leakage Radiation | from 1 m does not exceed 1 mGy/hr |
| SID Indicator | 2% of SID |
| Collimator | 2% of SID |
| Radiodermatitis Dose | 2Gy |
| Dose for spontaneous abortion in first 2 weeks | 100 mGy |
| Genetically Significant Dose | 0.2 mSv |
| No ABC | 5 R/min = 50 mGy/min |
| With ABC | 10 R/min = 100 mGy/min |
| HLCF | 20 R/min = 200 mGy/min |
| Non-life saving event | 50 mSv/event |
| life saving event | 250 mSv/event |
| Doubling dose | 1.56 Sv |
| Controlled area weekly dose | 1000 microSv / 1mSv |
| Uncontrolled area weekly dose | 20 microSv |
| Epilation Temporary | 3 Gy |
| Epilation Permanent | 7 Gy |