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Rad Bio Test 2
RDTC 236
| Question | Answer |
|---|---|
| Low dose radiation over a long period of time produces __ effect? | Stochastic Effect |
| High dose radiation produces __ effect? | Deterministic Effect |
| Shrinkage of organ/tissue from Cell Death? | Atrophy |
| Skin Reddening? | Erythemia |
| Dose to see Erythemia? | 200 rad |
| Dose to see Main Erythemia? | 600 rad (Dermis gone) |
| __ is hair falling out? At what dose? | Epilation, 300 rad |
| Dose for Permanent Epilation? | 700 rad |
| __ is ulceration, skin lesions? At what dose? | Desquamation, 1500 rad |
| Minimal Response dose for Gonadal Effects - delayed ovulation, reduced sperm production? | 10 rad |
| Dose for Temporary Sterility? | 200 rad |
| Dose for Permanent Sterility? | 500 rad |
| Blood cell LEAST sensitive to radiation? | Erythrocytes |
| Blood cell MOST sensitive to radiation? | Lymphocytes |
| Granulocytes & Platelets are NOT sensitive to radiation (T/F)? | False |
| Stochastic Effects ↑ Dose = ↑ __ ? | ↑ Dose = ↑ Risk (Stochastic) |
| Deterministic Effects ↑ Dose = ↑ __? | ↑ Dose = ↑ Severity (Deterministic) |
| __ Effects show Linearity NONthreshold Probability increase with NO change in Severity? | Stochastic |
| __ Effects involve Higher Doses with Threshold responses? | Deterministic |
| Callused, discolored, brittle, cracked, flake skin caused by LONG Term Exposure to HIGH Doses of Radiation? | Radiodermititis |
| Cataracts appear on NonLinear threshold response at what dose? | 200 rad |
| #1 cancer from radiation? __ yrs to develop? At risk period? | Leukemia 4-7 yrs, at risk 20 yrs |
| Absolute Risk of Radiation-Induced Leukemia? | 1.5 cases/10⁶ (persons/rad/yr) |
| Absolute Risk of ALL Cancers? | 10 cases/10⁶ |
| Risk Estimate formula? | Relative Risk = Observed Cases/Expected Cases |
| Excess Risk = __ -__ | Excess Risk = Observed Cases - Expected Cases |
| __ is dose that will double the occurrence of Genetic Mutations? | Doubling Dose |
| Human Doubling Dose? | 50-250 rad |
| R → c/kg | R / 3880 = c/kg |
| c/kg → R | c/kg x 3880 = R |
| rad → rem | rad x QF = rem |
| Gy → Sv | Gy x QF = Sv |
| rad → Gy | rad x .01 = Gy |
| Gy → rad | Gy x 100 = rad |
| rem → Sv | rem x .01 = Sv |
| Roentgen = __? | R=rad (Rx1=rad) |
| Sv → rem | Sv x 100 = rem |
| mrad → Sv | mrad→rad→Gy x QF = Sv |
| Units of measure for Exposure in Air? | C/kg & R |
| Units of measure for Absorbed Dose? | Gy & rad |
| Units of measure for Dose Equivalent? | Sv (Gy x QF) & rem (rad x QF) |
| SI Absorbed Dose __ = 1 __ | Gy = 1 joule/kg |
| Traditional Absorbed Dose __ = __ | rad = 100 ergs/g |
| 1 rad = __ Gy = __ mGy | 1 rad = .01 Gy = 10 mGy |
| 1 Gy = __ rad | 1 Gy = 100 rad |
| Thermal Neutron QF | 5 |
| Fast Neutrons & Alpha Particles QF | 20 |
| Annual dose limit for Radiation worker? | 50 mSv (5 rem) |
| Cumulative Life dose limit for Radiation worker? | 10 mSv x age (1 rem x age) |
| Equivalent Annual dose for Lens of the EYE? | 150 mSv (15 rem) |
| Equivalent Annual dose for Thyroid, Skin, Hands, Feet? | 500 mSv (50 rem) |
| Annual dose for Public Exposure? | 1 mSv (100 mrem) |
| Annual dose for Minors? | 1 mSv (100 mrem) |
| Monthly dose limit for Fetus of Rad worker? | .5 mSv (50 mrem) |
| 9 Month/Term dose limit for Fetus of Rad worker? | 5 mSv (500 mrem) |
| rems x __ = mSv | rems x 10 = mSv |
| Effective Dose = ? | Radiation Weighting Factor x Tissue Weighting Factor x Absorbed Dose |
| EfD = __ x __ x __ | EfD = Wr x Wt x Dose |
| 1 TVL = __ HVL | 3.3 HVL |
| rem → mSv | Rem x 10 = mSv |
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RadTechTKD
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